MultiPhysicsVault/wiki/log.md

---
type: meta
title: "Operation Log"
updated: 2026-05-28
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`

---

## [2026-05-28] 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.