modify wiki

wiki/entities/ABAQUS.md

@@ -2,34 +2,73 @@
 type: entity
 title: "ABAQUS"
 entity_type: software
-role: "Commercial finite element software used for validation comparisons"
+role: "Commercial finite element software, documented theory reference, and user-guide workflow"
 first_mentioned: "[[Dynamic-Buckling-Analysis-of-Shell-Structures-using-Finite-Element-Method]]"
 created: 2026-05-28
-updated: 2026-05-28
+updated: 2026-05-29
 address: c-000036
 tags:
   - entity
   - software
   - finite-element-method
   - validation
+  - abaqus
 status: current
 related:
   - "[[Dynamic-Buckling-Analysis-of-Shell-Structures-using-Finite-Element-Method]]"
+  - "[[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 Analysis Procedures]]"
+  - "[[Abaqus Element Library]]"
+  - "[[Abaqus Constitutive Integration]]"
+  - "[[Finite Element Contact Formulation]]"
   - "[[Finite Element Program Implementation]]"
+  - "[[Abaqus Input File Syntax]]"
+  - "[[Abaqus Job Execution Workflow]]"
+  - "[[Abaqus Output Database and Results Files]]"
+  - "[[Abaqus Nonlinear Solution Control]]"
+  - "[[Abaqus Restart and Results Transfer]]"
+  - "[[Abaqus Multiphysics Coupling and Co-simulation]]"
 sources:
   - "[[Dynamic-Buckling-Analysis-of-Shell-Structures-using-Finite-Element-Method]]"
+  - "[[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
 
 ## Overview
 
-ABAQUS is the commercial finite element software used as a comparison reference in the dynamic buckling thesis.
+ABAQUS is a commercial finite element software system. In this wiki it has three roles: it is used as a comparison reference in the dynamic buckling thesis, its theory manual documents finite element procedures and formulations, and its analysis user guide documents the practical input-file, job-execution, resource-control, and output workflow.
 
 ## Role In The Source
 
 The thesis compares the developed finite element program against ABAQUS for linear static shell benchmarks, geometric nonlinear response, and static buckling eigenvalue and mode-shape checks.
 
+The [[Abaqus Theory Manual]] expands that context by describing ABAQUS/Standard, ABAQUS/Explicit, and related Abaqus tools as a theory-backed finite element system. It connects nonlinear solution procedures, element interpolation, integration rules, hybrid incompressible elements, constitutive integration, contact, and multiphysics procedures.
+
+[[Abaqus-Analysis-User-s-Guide-Volume-I|Abaqus Analysis User's Guide Volume I]] adds the operational layer: keyword syntax, node and element model definitions, surfaces and assemblies, matrix-based model components, command-line execution, environment settings, parallel execution, and output file interpretation.
+
+[[Abaqus-Analysis-User-s-Guide-Volume-II|Abaqus Analysis User's Guide Volume II]] adds the analysis strategy layer: general and perturbation steps, nonlinear controls, static and dynamic procedure families, restart and result transfer, substructuring, submodeling, adaptivity, Eulerian and particle methods, co-simulation, optimization, and user subroutines.
+
+## Key Links
+
+- [[Abaqus Analysis Procedures]] - solver workflows and procedure families.
+- [[Abaqus Element Library]] - element formulations and integration choices.
+- [[Abaqus Constitutive Integration]] - integration-point material updates and tangents.
+- [[Finite Element Contact Formulation]] - interface and surface interaction modeling.
+- [[Abaqus Input File Syntax]] - keyword and data-line model definition.
+- [[Abaqus Job Execution Workflow]] - command-line execution and analysis utilities.
+- [[Abaqus Output Database and Results Files]] - output databases, selected results files, and diagnostics.
+- [[Abaqus Nonlinear Solution Control]] - increments, iterations, residual convergence, stabilization, and cutbacks.
+- [[Abaqus Restart and Results Transfer]] - restart, import, and staged analysis continuation.
+- [[Abaqus Multiphysics Coupling and Co-simulation]] - sequential coupling and runtime solver coupling.
+
 ## Sources
 
 - [[Dynamic-Buckling-Analysis-of-Shell-Structures-using-Finite-Element-Method]]
+- [[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]]

wiki/entities/Daryl L. Logan.md

@@ -0,0 +1,34 @@
+---
+type: entity
+title: "Daryl L. Logan"
+entity_type: person
+role: "Author of A First Course in the Finite Element Method"
+created: 2026-05-29
+updated: 2026-05-29
+address: c-000062
+tags:
+  - entity
+  - person
+  - finite-element-method
+status: current
+related:
+  - "[[A-First-Course-in-the-Finite-Element-Method|A First Course in the Finite Element Method]]"
+  - "[[Finite Element Method]]"
+sources:
+  - "[[A-First-Course-in-the-Finite-Element-Method|A First Course in the Finite Element Method]]"
+---
+
+# Daryl L. Logan
+
+## Overview
+
+Daryl L. Logan is the author of [[A-First-Course-in-the-Finite-Element-Method|A First Course in the Finite Element Method]]. The source identifies him with the University of Wisconsin-Platteville.
+
+## Role In The Wiki
+
+Logan's textbook contributes an introductory finite element sequence that moves from spring and bar elements through trusses, beams, frames, plane stress/strain, axisymmetric elements, isoparametric formulation, heat transfer, thermal stress, and dynamics.
+
+## Sources
+
+- [[A-First-Course-in-the-Finite-Element-Method|A First Course in the Finite Element Method]]
+

wiki/entities/_index.md

@@ -1,7 +1,7 @@
 ---
 type: meta
 title: "Entities Index"
-updated: 2026-05-28
+updated: 2026-05-29
 tags:
   - meta
   - index
@@ -20,11 +20,16 @@ related:
   - "[[Inha University]]"
   - "[[BLZPACK]]"
   - "[[ABAQUS]]"
+  - "[[Daryl L. Logan]]"
   - "[[Finite Element Procedures]]"
   - "[[A Continuum Mechanics Based Four-Node Shell]]"
   - "[[Four-Node-Quadrilateral-Shell-Element-MITC4]]"
   - "[[Dynamic-Buckling-Analysis-of-Shell-Structures-using-Finite-Element-Method]]"
   - "[[On-the-Finite-Element-Analysis-of-Shell-Structures]]"
+  - "[[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]]"
+  - "[[A-First-Course-in-the-Finite-Element-Method|A First Course in the Finite Element Method]]"
 ---
 
 # Entities Index
@@ -44,6 +49,7 @@ All entity pages: people, organizations, products, and tools.
 - [[Hee Jun Lee]] - author of [[Dynamic-Buckling-Analysis-of-Shell-Structures-using-Finite-Element-Method|Dynamic Buckling Analysis of Shell Structures using Finite Element Method]]
 - [[Phill-Seung Lee]] - author of [[On-the-Finite-Element-Analysis-of-Shell-Structures|On the Finite Element Analysis of Shell Structures]]
 - [[Hyuk-Chun Noh]] - author of [[On-the-Finite-Element-Analysis-of-Shell-Structures|On the Finite Element Analysis of Shell Structures]]
+- [[Daryl L. Logan]] - author of [[A-First-Course-in-the-Finite-Element-Method|A First Course in the Finite Element Method]]
 
 ---
 
@@ -57,7 +63,7 @@ All entity pages: people, organizations, products, and tools.
 
 - [[OOFEM]] - finite element code used for the MITC4 shell element implementation
 - [[BLZPACK]] - Block Lanczos eigenvalue solver used for vibration and buckling analysis
-- [[ABAQUS]] - finite element software used for validation comparisons
+- [[ABAQUS]] - commercial finite element software, documented theory reference, and user-guide workflow
 
 ---