MultiPhysicsVault/wiki/log.md

type, title, created, updated, tags, status, related

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

Operation Log

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

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

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[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
• Pages created: 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-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
• Pages created: 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, 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
• Pages created: 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
• Pages created: 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
• Pages created: 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
• Pages created: 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
• Pages created: 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-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
• Pages created: 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 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
• Pages created: 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
• Pages created: 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
• Pages created: 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
• Pages created: 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
• Pages created: 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.