---
type: meta
title: "Operation Log"
created: 2026-05-28
updated: 2026-06-02
tags:
  - meta
  - log
status: evergreen
related:
  - "[[index]]"
  - "[[hot]]"
  - "[[overview]]"
  - "[[sources/_index]]"
---

# Operation Log

Navigation: [[index]] | [[hot]] | [[overview]]

Append-only. New entries go at the TOP. Never edit past entries.

Entry format: `## [YYYY-MM-DD] operation | Title`

Parse recent entries: `grep "^## \[" wiki/log.md | head -10`

---

## [2026-06-02] maintenance | Backfilled concept source references
- Scope: `wiki/concepts/*.md`
- Summary: Added `source_refs` frontmatter to every concept page, mapping each existing `sources` wikilink to heuristic `.raw` Markdown chunk candidates.
- Pages updated: 144 concept pages and [[hot]]
- Key insight: Concept pages now expose raw provenance directly through `raw_path`, `raw_files`, `md_indices`, `match`, and `confidence`, so users can jump from a concept to the likely source chunk without first opening the source summary page.

## [2026-06-02] ingest | Midas NFX Analysis Manual
- Source: `.raw/MidasNFXAnalysisManual/`
- Summary: [[Midas-NFX-Analysis-Manual|Midas NFX Analysis Manual]]
- Pages created: [[Midas-NFX-Analysis-Manual|Midas NFX Analysis Manual]], [[midas NFX]], [[Midas NFX Analysis Workflow]], [[Midas NFX Element Library]], [[Midas NFX Material and Composite Models]], [[Midas NFX Equation Solvers and Eigen Extraction]], [[Midas NFX Linear Dynamics and Buckling Analyses]], [[Midas NFX Nonlinear Static and Dynamic Algorithms]], [[Midas NFX Contact Analysis]], [[Midas NFX Fatigue Analysis]], [[Midas NFX Heat Transfer Joule Heating and Thermal Stress]], [[Midas NFX Structural Optimization and Forming Limit Analysis]]
- Pages updated: [[index]], [[overview]], [[hot]], [[sources/_index]], [[concepts/_index]], [[entities/_index]], [[Computational Mechanics]], [[MIDAS Information Technology]], [[midas FEA]], [[midas Civil]], [[Midas-FEA-Analysis-Manual|Midas FEA Analysis Manual]], [[Midas-Civil-Analysis-Reference|Midas Civil Analysis Reference]], [[Finite Element Method]], [[Finite Element Program Implementation]], [[Static Equilibrium Equation Solvers]], [[Direct Time Integration Methods]], [[Finite Element Eigenproblem Solvers]], [[Finite Element Heat Transfer and Field Problems]], [[Finite Element Thermal Stress Analysis]], [[Finite Element Contact Formulation]], [[Finite Element Modeling and Convergence Checks]], [[Abaqus Structural Optimization and Parametric Studies]], [[Abaqus Transport Acoustic and Electromagnetic Materials]], [[dashboard]], [[getting-started]], [[Wiki Map]]
- Key insight: Midas NFX adds the general-purpose MIDAS production-solver layer: coordinate-system contracts, broad element/material coverage, direct/iterative solver selection, eigen-result checks, linear/nonlinear dynamics, contact, fatigue, thermal/electrical coupling, optimization, and forming-limit checks become explicit custom-solver requirements.

## [2026-06-02] ingest | Midas Civil Analysis Reference
- Source: `.raw/MidasCivilAnalysisReference/`
- Summary: [[Midas-Civil-Analysis-Reference|Midas Civil Analysis Reference]]
- Pages created: [[Midas-Civil-Analysis-Reference|Midas Civil Analysis Reference]], [[midas Civil]], [[Midas Civil Numerical Analysis Model]], [[Midas Civil Element Library and Section Stiffness]], [[Midas Civil Boundary Supports and Links]], [[Midas Civil Dynamic and Seismic Analysis]], [[Midas Civil Buckling P-Delta and Geometric Nonlinearity]], [[Midas Civil Boundary and Material Nonlinear Analysis]], [[Midas Civil Pushover and Performance Evaluation]], [[Midas Civil Nonlinear Time History and Hysteresis Models]], [[Midas Civil Construction Stage and Time-Dependent Analysis]], [[Midas Civil Heat of Hydration and Thermal Stress Analysis]], [[Midas Civil PSC and Prestress Loss Analysis]], [[Midas Civil Moving Load Bridge Analysis]], [[Midas Civil Special Load and Design Utilities]]
- Pages updated: [[index]], [[overview]], [[hot]], [[sources/_index]], [[concepts/_index]], [[entities/_index]], [[Computational Mechanics]], [[MIDAS Information Technology]], [[midas FEA]], [[Midas-FEA-Analysis-Manual|Midas FEA Analysis Manual]], [[Finite Element Method]], [[Nonlinear Finite Element Analysis]], [[Finite Element Program Implementation]], [[Static Equilibrium Equation Solvers]], [[Direct Time Integration Methods]], [[Finite Element Eigenproblem Solvers]], [[Finite Element Heat Transfer and Field Problems]], [[Finite Element Thermal Stress Analysis]], [[Finite Element Modeling and Convergence Checks]], [[Finite Element Load Vector Assembly]], [[dashboard]], [[getting-started]], [[Wiki Map]]
- Key insight: Midas Civil adds the bridge/civil production solver layer: numerical model topology, section stiffness, supports and links, seismic dynamics, buckling, nonlinear hinges, construction-stage state transfer, hydration thermal stress, PSC losses, moving-load envelopes, settlement, wave loads, and design utilities become explicit custom-solver requirements and regression targets.

## [2026-06-02] ingest | Midas FEA Analysis Manual
- Source: `.raw/MidasFEAAnalysisManual/`
- Summary: [[Midas-FEA-Analysis-Manual|Midas FEA Analysis Manual]]
- Pages created: [[Midas-FEA-Analysis-Manual|Midas FEA Analysis Manual]], [[MIDAS Information Technology]], [[midas FEA]], [[Midas FEA Analysis Workflow]], [[Midas FEA Element Library]], [[Midas FEA Embedded Reinforcement Modeling]], [[Midas FEA Interface Elements and Nonlinearities]], [[Midas FEA Concrete Cracking and Material Models]], [[Midas FEA Nonlinear Solution Algorithms]], [[Midas FEA Linear Dynamics and Buckling Analyses]], [[Midas FEA Construction Stage Analysis]], [[Midas FEA Heat Transfer and Hydration Analysis]], [[Midas FEA Static Contact Analysis]], [[Midas FEA Fatigue Analysis]], [[Midas FEA CFD Analysis]]
- Pages updated: [[index]], [[overview]], [[hot]], [[sources/_index]], [[concepts/_index]], [[entities/_index]], [[Computational Mechanics]], [[Finite Element Method]], [[Nonlinear Finite Element Analysis]], [[Finite Element Program Implementation]], [[Static Equilibrium Equation Solvers]], [[Direct Time Integration Methods]], [[Finite Element Eigenproblem Solvers]], [[Finite Element Heat Transfer and Field Problems]], [[Finite Element Contact Formulation]], [[Finite Element Modeling and Convergence Checks]], [[Finite Element Plasticity]], [[dashboard]], [[getting-started]], [[Wiki Map]]
- Key insight: The Midas manual adds a civil nonlinear production-solver reference: element libraries, embedded reinforcement, concrete cracking, interface laws, nonlinear algorithms, linear dynamics and buckling, construction stages, hydration heat, static contact, fatigue, and wind-CFD become concrete requirements and verification targets for a custom FE solver roadmap.

## [2026-06-02] ingest | Finite Elements in Plasticity: Theory and Practice
- Source: `.raw/FiniteElementsinPlasticityTheoryandPractice/`
- Summary: [[Finite-Elements-in-Plasticity-Theory-and-Practice|Finite Elements in Plasticity: Theory and Practice]]
- Pages created: [[Finite-Elements-in-Plasticity-Theory-and-Practice|Finite Elements in Plasticity: Theory and Practice]], [[D. R. J. Owen]], [[E. Hinton]], [[Finite Element Plasticity]], [[Incremental Elasto-Plastic Solution Methods]], [[Plasticity Yield Criteria]], [[Plastic Flow Rules and Hardening]], [[Elasto-Viscoplastic Finite Element Analysis]], [[Elasto-Plastic Timoshenko Beam Analysis]], [[Elasto-Plastic Mindlin Plate Analysis]], [[Transient Dynamic Elasto-Plastic Analysis]], [[Finite Element Plasticity Program Architecture]], [[Plasticity Benchmark and Input Data Cases]]
- Pages updated: [[index]], [[overview]], [[hot]], [[sources/_index]], [[concepts/_index]], [[entities/_index]], [[Computational Mechanics]], [[Nonlinear Finite Element Analysis]], [[Abaqus Constitutive Integration]], [[Abaqus Metal Plasticity Models]], [[Abaqus Geomaterial and Concrete Plasticity]], [[Finite Element Program Implementation]], [[Direct Time Integration Methods]], [[dashboard]], [[getting-started]], [[Wiki Map]]
- Key insight: Owen and Hinton add the missing finite element plasticity implementation layer: yield criteria, flow and hardening laws, elasto-viscoplastic updates, beam/plate plasticity, transient dynamic plasticity, and benchmark input cases for solver verification.

## [2026-06-01] ingest | Abaqus Analysis User's Guide Volume V
- Source: `.raw/AbaqusAnalysisUserGuide5/`
- Summary: [[Abaqus-Analysis-User-s-Guide-Volume-V|Abaqus Analysis User's Guide Volume V]]
- Pages created: [[Abaqus-Analysis-User-s-Guide-Volume-V|Abaqus Analysis User's Guide Volume V]], [[Abaqus Prescribed Conditions and Amplitudes]], [[Abaqus Initial and Boundary Conditions]], [[Abaqus Loads and Predefined Fields]], [[Abaqus Kinematic Constraints and MPCs]], [[Abaqus Surface-Based Constraints and Couplings]], [[Abaqus Embedded Elements and Overconstraints]], [[Abaqus Contact Interaction Definition]], [[Abaqus Contact Property Models]], [[Abaqus Contact Formulations and Enforcement]], [[Abaqus Contact Diagnostics and Modeling Difficulties]], [[Abaqus Standard Contact Elements]], [[Abaqus Cavity Radiation Interactions]]
- Pages updated: [[index]], [[overview]], [[hot]], [[sources/_index]], [[concepts/_index]], [[entities/_index]], [[Computational Mechanics]], [[ABAQUS]], [[Abaqus Input File Syntax]], [[Abaqus Surface and Assembly Modeling]], [[Finite Element Load Vector Assembly]], [[Abaqus Nonlinear Solution Control]], [[Abaqus Connector Elements and Behaviors]], [[Finite Element Contact Formulation]], [[Abaqus Multiphysics Coupling and Co-simulation]], [[Finite Element Heat Transfer and Field Problems]], [[dashboard]], [[getting-started]], [[Wiki Map]]
- Key insight: Volume V adds the Abaqus boundary-and-interaction layer: amplitudes, initial and boundary conditions, loads, predefined fields, constraints, contact definitions, contact properties, contact enforcement, diagnostics, contact elements, and cavity radiation.

## [2026-06-01] ingest | Abaqus Analysis User's Guide Volume IV
- Source: `.raw/AbaqusAnalysisUserGuide4/`
- Summary: [[Abaqus-Analysis-User-s-Guide-Volume-IV|Abaqus Analysis User's Guide Volume IV]]
- Pages created: [[Abaqus-Analysis-User-s-Guide-Volume-IV|Abaqus Analysis User's Guide Volume IV]], [[Abaqus Element Selection and Formulation]], [[Abaqus Continuum Element Families]], [[Abaqus Structural Element Families]], [[Abaqus Beam and Shell Section Definitions]], [[Abaqus Inertial Rigid and Capacitance Elements]], [[Abaqus Connector Elements and Behaviors]], [[Abaqus Cohesive and Gasket Elements]], [[Abaqus Special-Purpose Interaction Elements]], [[Abaqus Fluid Acoustic Eulerian and Particle Elements]], [[Abaqus User-Defined Elements]], [[Abaqus Element Indexes and Naming Conventions]]
- Pages updated: [[index]], [[overview]], [[hot]], [[sources/_index]], [[concepts/_index]], [[entities/_index]], [[Computational Mechanics]], [[ABAQUS]], [[Abaqus Element Library]], [[Reduced Integration and Hourglass Control]], [[Hybrid Incompressible Elements]], [[Isoparametric Finite Elements]], [[Isoparametric Linear Solid Elements]], [[Beam and Frame Finite Elements]], [[MITC4 Shell Element]], [[Abaqus Eulerian and Particle Methods]], [[Abaqus User Subroutines and Utility Routines]], [[Finite Element Contact Formulation]], [[Abaqus Multiphysics Coupling and Co-simulation]], [[dashboard]], [[getting-started]], [[Wiki Map]]
- Key insight: Volume IV adds the Abaqus discretization layer: element families, formulation suffixes, integration choices, section definitions, connector behavior, cohesive/gasket interfaces, fluid/acoustic/Eulerian/particle elements, user-defined elements, and product-specific element indexes.

## [2026-06-01] ingest | Abaqus Analysis User's Guide Volume III
- Source: `.raw/AbaqusAnalysisUserGuide3/`
- Summary: [[Abaqus-Analysis-User-s-Guide-Volume-III|Abaqus Analysis User's Guide Volume III]]
- Pages created: [[Abaqus-Analysis-User-s-Guide-Volume-III|Abaqus Analysis User's Guide Volume III]], [[Abaqus Material Library and Data Definition]], [[Abaqus Elastic Material Models]], [[Abaqus Hyperelastic and Viscoelastic Materials]], [[Abaqus Metal Plasticity Models]], [[Abaqus Geomaterial and Concrete Plasticity]], [[Abaqus Progressive Damage and Failure]], [[Abaqus Hydrodynamic Equation of State Materials]], [[Abaqus Thermal Expansion and Damping Materials]], [[Abaqus Transport Acoustic and Electromagnetic Materials]], [[Abaqus Porous Media and Pore Fluid Materials]], [[Abaqus User-Defined Material Behavior]]
- Pages updated: [[index]], [[overview]], [[hot]], [[sources/_index]], [[concepts/_index]], [[entities/_index]], [[Computational Mechanics]], [[ABAQUS]], [[Abaqus Theory Manual]], [[Abaqus-Analysis-User-s-Guide-Volume-I|Abaqus Analysis User's Guide Volume I]], [[Abaqus-Analysis-User-s-Guide-Volume-II|Abaqus Analysis User's Guide Volume II]], [[Abaqus Constitutive Integration]], [[Abaqus User Subroutines and Utility Routines]], [[Finite Element Heat Transfer and Field Problems]], [[Nonlinear Finite Element Analysis]], [[Hybrid Incompressible Elements]], [[Finite Element Thermal Stress Analysis]], [[Abaqus Multiphysics Coupling and Co-simulation]], [[dashboard]], [[getting-started]], [[Wiki Map]]
- Key insight: Volume III adds the Abaqus material-definition layer: material data blocks, elasticity, hyperelasticity, viscoelasticity, plasticity, damage, hydrodynamic equations of state, thermal and field properties, porous media, and user-defined material behavior.

## [2026-05-29] ingest | Abaqus Analysis User's Guide Volume II
- Source: `.raw/AbaqusAnalysisUserGuide2/`
- Summary: [[Abaqus-Analysis-User-s-Guide-Volume-II|Abaqus Analysis User's Guide Volume II]]
- Pages created: [[Abaqus-Analysis-User-s-Guide-Volume-II|Abaqus Analysis User's Guide Volume II]], [[Abaqus General and Linear Perturbation Steps]], [[Abaqus Nonlinear Solution Control]], [[Abaqus Restart and Results Transfer]], [[Abaqus Substructuring and Submodeling]], [[Abaqus Matrix Generation and Reduced Models]], [[Abaqus Fracture and Enriched Discontinuity Modeling]], [[Abaqus Adaptivity and Mesh Replacement]], [[Abaqus Explicit Analysis Efficiency Techniques]], [[Abaqus Eulerian and Particle Methods]], [[Abaqus Multiphysics Coupling and Co-simulation]], [[Abaqus Structural Optimization and Parametric Studies]], [[Abaqus User Subroutines and Utility Routines]]
- Pages updated: [[index]], [[overview]], [[hot]], [[sources/_index]], [[concepts/_index]], [[entities/_index]], [[Computational Mechanics]], [[ABAQUS]], [[Abaqus Theory Manual]], [[Abaqus-Analysis-User-s-Guide-Volume-I|Abaqus Analysis User's Guide Volume I]], [[Abaqus Analysis Procedures]], [[Abaqus Matrix-Based Model Definition]], [[Abaqus Job Execution Workflow]], [[Abaqus Resource and Parallel Execution]], [[Static Equilibrium Equation Solvers]], [[Direct Time Integration Methods]], [[Finite Element Eigenproblem Solvers]], [[Finite Element Heat Transfer and Field Problems]], [[Finite Element Program Implementation]], [[Finite Element Modeling and Convergence Checks]], [[dashboard]], [[getting-started]], [[Wiki Map]]
- Key insight: Volume II adds the Abaqus analysis-strategy layer: procedure selection, nonlinear controls, restart/import, reduced modeling, fracture/XFEM, adaptivity, explicit efficiency, Eulerian/particle methods, multiphysics coupling, optimization, and user-code extension.

## [2026-05-29] ingest | Abaqus Analysis User's Guide Volume I
- Source: `.raw/AbaqusAnalysisUserGuide1/`
- Summary: [[Abaqus-Analysis-User-s-Guide-Volume-I|Abaqus Analysis User's Guide Volume I]]
- Pages created: [[Abaqus-Analysis-User-s-Guide-Volume-I|Abaqus Analysis User's Guide Volume I]], [[Abaqus Input File Syntax]], [[Abaqus Spatial Model Definition]], [[Abaqus Surface and Assembly Modeling]], [[Abaqus Matrix-Based Model Definition]], [[Abaqus Job Execution Workflow]], [[Abaqus Resource and Parallel Execution]], [[Abaqus Output Database and Results Files]]
- Pages updated: [[index]], [[overview]], [[hot]], [[sources/_index]], [[concepts/_index]], [[entities/_index]], [[Computational Mechanics]], [[ABAQUS]], [[Abaqus Theory Manual]], [[Abaqus Analysis Procedures]], [[Abaqus Element Library]], [[Finite Element Program Implementation]], [[Finite Element Contact Formulation]], [[Finite Element Load Vector Assembly]], [[Finite Element Modeling and Convergence Checks]], [[dashboard]], [[getting-started]], [[Wiki Map]]
- Key insight: The user guide adds the analyst-facing Abaqus workflow from keyword input and spatial model definition through job execution, resource control, and output database/results-file interpretation.

## [2026-05-29] ingest | A First Course in the Finite Element Method
- Source: `.raw/AFirstCourseInTheFiniteElementMethod/`
- Summary: [[A-First-Course-in-the-Finite-Element-Method|A First Course in the Finite Element Method]]
- Pages created: [[A-First-Course-in-the-Finite-Element-Method|A First Course in the Finite Element Method]], [[Daryl L. Logan]], [[Direct Stiffness Method]], [[Bar and Truss Finite Elements]], [[Beam and Frame Finite Elements]], [[Plane Stress and Plane Strain Elements]], [[Axisymmetric Finite Elements]], [[Finite Element Load Vector Assembly]], [[Finite Element Modeling and Convergence Checks]], [[Finite Element Thermal Stress Analysis]]
- Pages updated: [[index]], [[overview]], [[hot]], [[sources/_index]], [[concepts/_index]], [[entities/_index]], [[Computational Mechanics]], [[Finite Element Method]], [[Displacement-Based Finite Element Formulation]], [[Isoparametric Finite Elements]], [[Finite Element Heat Transfer and Field Problems]], [[Static Equilibrium Equation Solvers]], [[Direct Time Integration Methods]], [[Finite Element Program Implementation]], [[Isoparametric Linear Solid Elements]], [[dashboard]], [[getting-started]], [[Wiki Map]]
- Key insight: Logan's textbook adds a teaching sequence that grounds the finite element method in direct stiffness assembly, structural element families, plane and axisymmetric continua, load vectors, modeling checks, thermal stress, and elementary dynamics.

## [2026-05-29] ingest | Abaqus Theory Manual
- Source: `.raw/AbaqusTheoriesManual/`
- Summary: [[Abaqus Theory Manual]]
- Pages created: [[Abaqus Theory Manual]], [[Abaqus Analysis Procedures]], [[Abaqus Element Library]], [[Reduced Integration and Hourglass Control]], [[Hybrid Incompressible Elements]], [[Abaqus Constitutive Integration]], [[Finite Element Contact Formulation]]
- Pages updated: [[index]], [[overview]], [[hot]], [[sources/_index]], [[concepts/_index]], [[entities/_index]], [[Computational Mechanics]], [[Finite Element Method]], [[Nonlinear Finite Element Analysis]], [[Isoparametric Finite Elements]], [[Mixed Finite Element Formulations]], [[Direct Time Integration Methods]], [[Finite Element Eigenproblem Solvers]], [[Solid Element Stiffness Integration]], [[ABAQUS]], [[dashboard]], [[getting-started]], [[Wiki Map]]
- Key insight: The manual connects textbook FE theory to production Abaqus choices: procedure selection, element-library formulation, reduced and hybrid integration, material-point constitutive updates, and contact/interface constraints.

## [2026-05-28] ingest | Solid Element Notes
- Source: `.raw/SolidElement/`
- Summary: [[Solid Element Notes]]
- Pages created: [[Solid Element Notes]], [[Isoparametric Linear Solid Elements]], [[Solid Element Shape Functions]], [[Solid Element Strain-Displacement Matrix]], [[Solid Element Stiffness Integration]], [[Incompatible Mode Solid Elements]]
- Pages updated: [[index]], [[overview]], [[hot]], [[sources/_index]], [[concepts/_index]], [[Computational Mechanics]], [[Finite Element Method]], [[Isoparametric Finite Elements]], [[Displacement-Based Finite Element Formulation]], [[Mixed Finite Element Formulations]], [[dashboard]], [[getting-started]], [[Wiki Map]]
- Key insight: The notes add a 3D solid element formulation thread connecting natural-coordinate shape functions, Jacobian derivative mapping, `B^T D B` stiffness integration, and incompatible-mode enrichment.

## [2026-05-28] ingest | On the Finite Element Analysis of Shell Structures
- Source: `.raw/쉘구조물의유한요소해석에대하여/`
- Summary: [[On-the-Finite-Element-Analysis-of-Shell-Structures|On the Finite Element Analysis of Shell Structures]]
- Pages created: [[On-the-Finite-Element-Analysis-of-Shell-Structures|On the Finite Element Analysis of Shell Structures]], [[Phill-Seung Lee]], [[Hyuk-Chun Noh]], [[Basic Shell Mathematical Model]], [[Shell Structure Asymptotic Behavior]], [[Shell Locking Phenomenon]], [[Uniform Optimal Convergence]], [[Shell Element Benchmark Testing]]
- Pages updated: [[index]], [[overview]], [[hot]], [[sources/_index]], [[concepts/_index]], [[entities/_index]], [[Computational Mechanics]], [[Finite Element Method]], [[Continuum Mechanics Based Four-Node Shell Element]], [[Assumed Transverse Shear Strain Interpolation]], [[Mixed Finite Element Formulations]], [[MITC4 Shell Element]], [[Scordelis-Lo Shell Benchmark]], [[Klaus-Jurgen Bathe]], [[Wiki Map]]
- Key insight: The review connects shell mathematical models, thickness-dependent asymptotic behavior, locking, uniform optimal convergence, and benchmark design into one reliability framework for shell finite elements.

## [2026-05-28] ingest | Dynamic Buckling Analysis of Shell Structures using Finite Element Method
- Source: `.raw/유한요소해석법을이용한쉘구조물의동적좌굴해석/`
- Summary: [[Dynamic-Buckling-Analysis-of-Shell-Structures-using-Finite-Element-Method|Dynamic Buckling Analysis of Shell Structures using Finite Element Method]]
- Pages created: [[Dynamic-Buckling-Analysis-of-Shell-Structures-using-Finite-Element-Method|Dynamic Buckling Analysis of Shell Structures using Finite Element Method]], [[Hee Jun Lee]], [[Inha University]], [[BLZPACK]], [[ABAQUS]], [[Dynamic Buckling Analysis]], [[Dynamic Instability Region]], [[Geometric Stiffness Matrix]]
- Pages updated: [[index]], [[overview]], [[hot]], [[sources/_index]], [[concepts/_index]], [[entities/_index]], [[Computational Mechanics]], [[MITC4 Shell Element]], [[Total Lagrangian Shell Formulation]], [[Finite Element Eigenproblem Solvers]], [[Direct Time Integration Methods]], [[Nonlinear Finite Element Analysis]], [[Finite Element Program Implementation]], [[Static Equilibrium Equation Solvers]], [[Wiki Map]]
- Key insight: The thesis connects MITC4 shell modeling to dynamic stability prediction through geometric stiffness, eigenvalue solvers, validation benchmarks, and load-frequency instability regions.

## [2026-05-28] ingest | MITC Study Notes
- Source: `.raw/MITC공부/`
- Summary: [[MITC Study Notes]]
- Pages created: [[MITC Study Notes]], [[MITC Shell Kinematics]], [[Green-Lagrange Strain Linearization]], [[Nonlinear Newmark-Beta Integration]]
- Pages updated: [[index]], [[overview]], [[hot]], [[sources/_index]], [[concepts/_index]], [[Computational Mechanics]], [[MITC4 Shell Element]], [[Assumed Transverse Shear Strain Interpolation]], [[Total Lagrangian Shell Formulation]], [[Direct Time Integration Methods]], [[Nonlinear Finite Element Analysis]], [[Wiki Map]]
- Key insight: The study notes connect MITC shell kinematics to nonlinear FE solution by deriving director-vector displacement fields, Green-Lagrange strain linearization, tangent terms, and nonlinear Newmark-beta iteration.

## [2026-05-28] ingest | Four-Node Quadrilateral Shell Element MITC4
- Source: `.raw/FourNodeQuadrilateralShellElementMITC4/`
- Summary: [[Four-Node-Quadrilateral-Shell-Element-MITC4|Four-Node Quadrilateral Shell Element MITC4]]
- Pages created: [[Four-Node-Quadrilateral-Shell-Element-MITC4|Four-Node Quadrilateral Shell Element MITC4]], [[MITC4 Shell Element]], [[Scordelis-Lo Shell Benchmark]], [[Edita Dvorakova]], [[Borek Patzak]], [[OOFEM]]
- Pages updated: [[index]], [[overview]], [[hot]], [[sources/_index]], [[concepts/_index]], [[entities/_index]], [[Computational Mechanics]], [[Continuum Mechanics Based Four-Node Shell Element]], [[Assumed Transverse Shear Strain Interpolation]], [[Finite Element Program Implementation]], [[A Continuum Mechanics Based Four-Node Shell]], [[Wiki Map]]
- Key insight: The MITC4 source turns the Dvorkin-Bathe four-node shell formulation into an implementation thread by using mixed interpolation to control shear locking, verifying OOFEM patch tests, and comparing Scordelis-Lo convergence.

## [2026-05-28] ingest | A Continuum Mechanics Based Four-Node Shell
- Source: `.raw/AContinuumMechanicsBasedFourNodeShell/`
- Summary: [[A Continuum Mechanics Based Four-Node Shell]]
- Pages created: [[A Continuum Mechanics Based Four-Node Shell]], [[Eduardo N. Dvorkin]], [[Continuum Mechanics Based Four-Node Shell Element]], [[Assumed Transverse Shear Strain Interpolation]], [[Total Lagrangian Shell Formulation]]
- Pages updated: [[index]], [[overview]], [[hot]], [[sources/_index]], [[concepts/_index]], [[entities/_index]], [[Computational Mechanics]], [[Klaus-Jurgen Bathe]], [[Finite Element Method]], [[Displacement-Based Finite Element Formulation]], [[Isoparametric Finite Elements]], [[Mixed Finite Element Formulations]], [[Nonlinear Finite Element Analysis]], [[Wiki Map]]
- Key insight: The paper shows how a low-order quadrilateral shell element can remain effective for thin and thick nonlinear shell analysis by combining a continuum-mechanics formulation, assumed transverse shear strain interpolation, and total Lagrangian kinematics.

## [2026-05-28] cleanup | Trimmed wiki to finite element scope
- Type: scope cleanup
- Removed non-finite-element wiki content pages, old canvases, old fold pages, old question/comparison notes, and old release/audit/session artifacts under `wiki/`.
- Preserved wiki operational files: [[index]], [[hot]], [[log]], [[overview]], all `_index.md` files, [[dashboard]], [[Wiki Map]], [[getting-started]], and `wiki/references/`.
- Trimmed this log to 2026-05-28 entries only.
- Current scope: [[Finite Element Procedures]] and [[Computational Mechanics]].

## [2026-05-28] ingest | Finite Element Procedures
- Source: `.raw/FiniteElementProcedures/`
- Summary: [[Finite Element Procedures]]
- Pages created: [[Finite Element Procedures]], [[Klaus-Jurgen Bathe]], [[Computational Mechanics]], [[Finite Element Method]], [[Engineering Mathematical Models]], [[Displacement-Based Finite Element Formulation]], [[Isoparametric Finite Elements]], [[Mixed Finite Element Formulations]], [[Nonlinear Finite Element Analysis]], [[Finite Element Heat Transfer and Field Problems]], [[Static Equilibrium Equation Solvers]], [[Direct Time Integration Methods]], [[Finite Element Eigenproblem Solvers]], [[Finite Element Program Implementation]]
- Pages updated: [[index]], [[overview]], [[hot]], [[sources/_index]], [[concepts/_index]], [[entities/_index]], [[domains/_index]], [[log]]
- Key insight: The source frames finite element analysis as a modeling workflow that connects physical idealization, element formulation, algebraic solvers, and program implementation.