Wiki Index

Last updated: 2026-06-01 | Total pages: 138 | Sources ingested: 14

Concepts

Finite Element Method - numerical procedure for solving discretized engineering and physics models (status: current)
Engineering Mathematical Models - idealized physical models selected before finite element solution (status: current)
Displacement-Based Finite Element Formulation - primary solid mechanics formulation using nodal displacements (status: current)
Isoparametric Finite Elements - shape-function framework for element geometry, interpolation, and matrices (status: current)
Isoparametric Linear Solid Elements - first-order 3D continuum elements with translational nodal degrees of freedom (status: current)
Solid Element Shape Functions - natural-coordinate interpolation functions for tetrahedron, pyramid, wedge, and hexahedron elements (status: current)
Solid Element Strain-Displacement Matrix - 3D solid element B matrix and Jacobian derivative mapping (status: current)
Solid Element Stiffness Integration - B^T D B volume integration for solid element stiffness matrices (status: current)
Incompatible Mode Solid Elements - internal displacement mode enrichment and static condensation for solid elements (status: current)
Mixed Finite Element Formulations - multi-field formulations for incompressibility, constraints, and pressure-like variables (status: current)
Nonlinear Finite Element Analysis - incremental solution of geometric, material, contact, and load nonlinearities (status: current)
Abaqus Analysis Procedures - Abaqus procedure families for nonlinear, dynamic, modal, buckling, coupled-field, and special analyses (status: current)
Abaqus Element Library - Abaqus element formulations, interpolation, and integration choices (status: current)
Abaqus Element Selection and Formulation - Abaqus element family, DOF, interpolation, formulation, and integration selection workflow (status: current)
Abaqus Continuum Element Families - Abaqus solid, fluid continuum, infinite, warping, and coupled-field continuum element families (status: current)
Abaqus Structural Element Families - Abaqus membrane, truss, beam, frame, elbow, shell, continuum shell, and axisymmetric shell families (status: current)
Abaqus Beam and Shell Section Definitions - Abaqus cross-section, thickness, composite layer, and section integration definitions (status: current)
Abaqus Inertial Rigid and Capacitance Elements - Abaqus point mass, rotary inertia, rigid, and point capacitance elements (status: current)
Abaqus Connector Elements and Behaviors - Abaqus connector topology, connection types, actuation, and nonlinear behavior definitions (status: current)
Abaqus Cohesive and Gasket Elements - cohesive interface, traction-separation, pore-pressure cohesive, and gasket element workflows (status: current)
Abaqus Special-Purpose Interaction Elements - Abaqus springs, dashpots, joints, couplings, surfaces, line springs, pipe-soil, and acoustic interface elements (status: current)
Abaqus Fluid Acoustic Eulerian and Particle Elements - Abaqus acoustic, fluid, Eulerian, fluid pipe, DEM, and SPH element workflows (status: current)
Abaqus User-Defined Elements - Abaqus UEL, UELMAT, VUEL, custom DOFs, state variables, and user-element limitations (status: current)
Abaqus Element Indexes and Naming Conventions - Abaqus element name prefixes, suffixes, product indexes, and formulation markers (status: current)
Abaqus Prescribed Conditions and Amplitudes - Abaqus prescribed-condition classes, amplitude curves, and time-history rules (status: current)
Abaqus Initial and Boundary Conditions - Abaqus initial values, boundary conditions, propagation, modification, and removal (status: current)
Abaqus Loads and Predefined Fields - Abaqus concentrated, distributed, thermal, electromagnetic, acoustic, pore-fluid, pretension, connector, and predefined-field workflows (status: current)
Abaqus Kinematic Constraints and MPCs - Abaqus linear equations, multi-point constraints, user MPCs, and kinematic couplings (status: current)
Abaqus Surface-Based Constraints and Couplings - Abaqus tie, coupling, shell-to-solid, and surface-based constraint workflows (status: current)
Abaqus Embedded Elements and Overconstraints - Abaqus embedded elements, element end release, and overconstraint diagnostics (status: current)
Abaqus Contact Interaction Definition - Abaqus general contact, contact pair, and contact element definition workflow (status: current)
Abaqus Contact Property Models - Abaqus normal, frictional, damping, cohesive, thermal, electrical, and pore-fluid contact property models (status: current)
Abaqus Contact Formulations and Enforcement - Abaqus contact discretization, sliding, penalty, Lagrange multiplier, and augmented enforcement choices (status: current)
Abaqus Contact Diagnostics and Modeling Difficulties - Abaqus contact overclosure, surface quality, redundant constraint, and diagnostic workflows (status: current)
Abaqus Standard Contact Elements - Abaqus/Standard gap, tube-to-tube, slide line, and rigid surface contact elements (status: current)
Abaqus Cavity Radiation Interactions - Abaqus enclosure radiation, view factors, emissivity, open/closed cavities, and parallel cavity decomposition (status: current)
Abaqus Input File Syntax - keyword, data-line, model-data, and history-data syntax for Abaqus input files (status: current)
Abaqus Spatial Model Definition - practical node, element, set, coordinate-system, and model topology definition (status: current)
Abaqus Surface and Assembly Modeling - named surfaces and reusable part-instance assemblies for contact, loads, constraints, and output (status: current)
Abaqus Matrix-Based Model Definition - direct matrix input and assembly for stiffness, mass, and damping components (status: current)
Abaqus Job Execution Workflow - command-line analysis, checks, recovery, conversion, and utility workflow (status: current)
Abaqus Resource and Parallel Execution - memory, scratch, CPU, MPI/thread, domain, and GPU execution settings (status: current)
Abaqus Output Database and Results Files - ODB, SIM, selected results, status, message, restart, and diagnostic output files (status: current)
Abaqus General and Linear Perturbation Steps - Abaqus step classes, state propagation, perturbation procedures, and load-case interpretation (status: current)
Abaqus Nonlinear Solution Control - increments, Newton iterations, residual convergence, stabilization, and time-integration controls (status: current)
Abaqus Restart and Results Transfer - restart, import, state transfer, and staged analysis continuation (status: current)
Abaqus Substructuring and Submodeling - reduced substructures and global-to-local refined submodels (status: current)
Abaqus Matrix Generation and Reduced Models - generated stiffness, mass, damping, and load matrices for reuse or exchange (status: current)
Abaqus Fracture and Enriched Discontinuity Modeling - contour integrals, crack propagation, line springs, and XFEM discontinuities (status: current)
Abaqus Adaptivity and Mesh Replacement - ALE adaptive meshing, adaptive remeshing, and mesh-to-mesh solution mapping (status: current)
Abaqus Explicit Analysis Efficiency Techniques - mass scaling, selective subcycling, and steady-state detection for Abaqus/Explicit (status: current)
Abaqus Eulerian and Particle Methods - Eulerian volume fractions, CEL analysis, DEM, SPH, and particle generation (status: current)
Abaqus Multiphysics Coupling and Co-simulation - sequential predefined-field coupling and runtime solver co-simulation (status: current)
Abaqus Structural Optimization and Parametric Studies - structural optimization, design sensitivity, and scripted parametric studies (status: current)
Abaqus User Subroutines and Utility Routines - compiled extension points, utility routines, and external database hooks (status: current)
Abaqus Material Library and Data Definition - Abaqus material blocks, behavior combinations, temperature/field dependencies, distributions, and density (status: current)
Abaqus Elastic Material Models - linear, modified, porous, and hypoelastic material definitions in Abaqus (status: current)
Abaqus Hyperelastic and Viscoelastic Materials - large-strain elastomer, foam, Mullins, permanent-set, and time/frequency-dependent behavior (status: current)
Abaqus Metal Plasticity Models - metal plasticity, cyclic hardening, rate effects, creep, annealing, Johnson-Cook, and specialized metal models (status: current)
Abaqus Geomaterial and Concrete Plasticity - pressure-dependent plasticity, cap models, clay, crushable foam, jointed materials, and concrete models (status: current)
Abaqus Progressive Damage and Failure - damage initiation, evolution, mesh regularization, composite damage, low-cycle fatigue damage, and element deletion (status: current)
Abaqus Hydrodynamic Equation of State Materials - Abaqus/Explicit EOS models for shock, explosive, gas, compaction, and fluid-like response (status: current)
Abaqus Thermal Expansion and Damping Materials - Rayleigh damping, thermal expansion, field expansion, and viscosity material definitions (status: current)
Abaqus Transport Acoustic and Electromagnetic Materials - thermal, acoustic, diffusion, electrical, piezoelectric, dielectric, and magnetic material properties (status: current)
Abaqus Porous Media and Pore Fluid Materials - permeability, porous bulk moduli, sorption, swelling gel, and moisture swelling (status: current)
Abaqus User-Defined Material Behavior - UMAT, VUMAT, UMATHT, state variables, material Jacobians, and deletion flags (status: current)
Reduced Integration and Hourglass Control - under-integration tradeoffs and stabilization of zero-energy modes (status: current)
Hybrid Incompressible Elements - mixed displacement-pressure treatment for incompressible material behavior (status: current)
Abaqus Constitutive Integration - integration-point stress updates, state variables, and material tangents (status: current)
Finite Element Contact Formulation - finite element surface interaction and contact constraints (status: current)
Direct Stiffness Method - displacement-based stiffness assembly workflow for element systems (status: current)
Bar and Truss Finite Elements - axial structural elements, coordinate transformation, and truss analysis (status: current)
Beam and Frame Finite Elements - bending, shear, axial, rotational, frame, grid, and spatial beam element ideas (status: current)
Plane Stress and Plane Strain Elements - two-dimensional continuum elements for plane idealizations (status: current)
Axisymmetric Finite Elements - reduced-dimensional elements for bodies of revolution under symmetric loading (status: current)
Finite Element Load Vector Assembly - compatible nodal force vectors for distributed, body, surface, and thermal loads (status: current)
Finite Element Modeling and Convergence Checks - practical mesh, symmetry, stress interpretation, and convergence checks (status: current)
Finite Element Thermal Stress Analysis - thermal strain and equivalent force treatment for constrained temperature change (status: current)
Continuum Mechanics Based Four-Node Shell Element - low-order shell element derived from continuum mechanics (status: current)
Assumed Transverse Shear Strain Interpolation - shell locking remedy using a separately interpolated shear strain field (status: current)
Total Lagrangian Shell Formulation - reference-configuration formulation for nonlinear shell response (status: current)
MITC4 Shell Element - four-node quadrilateral shell element using mixed interpolation to avoid shear locking (status: current)
MITC Shell Kinematics - director-vector shell kinematics for MITC-style degenerated continuum shells (status: current)
Green-Lagrange Strain Linearization - nonlinear strain expansion for residual and tangent construction (status: current)
Nonlinear Newmark-Beta Integration - Newton-iterated Newmark time integration for nonlinear FE dynamics (status: current)
Dynamic Buckling Analysis - instability analysis under time-varying axial compression (status: current)
Dynamic Instability Region - load-frequency region where dynamic buckling occurs (status: current)
Geometric Stiffness Matrix - stress and geometry dependent stiffness contribution used in buckling analysis (status: current)
Scordelis-Lo Shell Benchmark - cylindrical shell benchmark for shell element convergence (status: current)
Basic Shell Mathematical Model - midsurface/director shell model underlying continuum shell finite elements (status: current)
Shell Structure Asymptotic Behavior - thin-shell response classes under decreasing thickness (status: current)
Shell Locking Phenomenon - thickness-dependent artificial stiffness in shell finite elements (status: current)
Uniform Optimal Convergence - shell element convergence that remains optimal across thickness regimes (status: current)
Shell Element Benchmark Testing - structured shell element performance testing across geometry, thickness, and meshes (status: current)
Finite Element Heat Transfer and Field Problems - FE treatment of heat transfer, fields, flow, and coupled problems (status: current)
Static Equilibrium Equation Solvers - direct, iterative, and nonlinear solvers for static FE equations (status: current)
Direct Time Integration Methods - transient FE dynamics and first-order field integration (status: current)
Finite Element Eigenproblem Solvers - modal and eigenvalue algorithms for FE matrices (status: current)
Finite Element Program Implementation - software data flow for FE codes and STAP-style implementation (status: current)

Entities

Klaus-Jurgen Bathe - professor of mechanical engineering, author of Finite Element Procedures, and co-author of A Continuum Mechanics Based Four-Node Shell (status: current)
Eduardo N. Dvorkin - co-author of A Continuum Mechanics Based Four-Node Shell (status: current)
Edita Dvorakova - co-author of Four-Node-Quadrilateral-Shell-Element-MITC4 (status: current)
Borek Patzak - co-author of Four-Node-Quadrilateral-Shell-Element-MITC4 and OOFEM-related researcher (status: current)
OOFEM - finite element code used for the MITC4 implementation (status: current)
Hee Jun Lee - author of Dynamic-Buckling-Analysis-of-Shell-Structures-using-Finite-Element-Method (status: current)
Phill-Seung Lee - author of On-the-Finite-Element-Analysis-of-Shell-Structures (status: current)
Hyuk-Chun Noh - author of On-the-Finite-Element-Analysis-of-Shell-Structures (status: current)
Daryl L. Logan - author of A-First-Course-in-the-Finite-Element-Method (status: current)
Inha University - degree-granting institution for the dynamic shell buckling thesis (status: current)
BLZPACK - Block Lanczos eigenvalue solver used in the dynamic buckling implementation (status: current)
ABAQUS - commercial finite element software, documented theory reference, and user-guide workflow (status: current)

Sources

Finite Element Procedures - 2014 textbook by Klaus-Jurgen Bathe; finite element theory, solvers, and implementation
A Continuum Mechanics Based Four-Node Shell - Dvorkin and Bathe paper on a four-node shell element for nonlinear analysis
Four-Node-Quadrilateral-Shell-Element-MITC4 - Dvorakova and Patzak paper on MITC4 implementation and Scordelis-Lo validation
MITC Study Notes - local derivation notes for MITC shell kinematics, nonlinear strain linearization, and Newmark-beta dynamics
Dynamic-Buckling-Analysis-of-Shell-Structures-using-Finite-Element-Method - 2012 thesis on MITC4 shell dynamic buckling analysis
On-the-Finite-Element-Analysis-of-Shell-Structures - review paper on shell mathematical models, asymptotic behavior, locking, convergence, and benchmark testing
Solid Element Notes - local notes on isoparametric linear solid element formulation, stiffness integration, and incompatible modes
Abaqus Theory Manual - Abaqus finite element theory reference for procedures, elements, materials, contact, constraints, and coupled fields
Abaqus-Analysis-User-s-Guide-Volume-I - Abaqus user guide for input syntax, spatial modeling, execution, resources, and output files
Abaqus-Analysis-User-s-Guide-Volume-II - Abaqus user guide for analysis procedures, nonlinear controls, continuation, model reduction, adaptivity, multiphysics, optimization, and extensions
Abaqus-Analysis-User-s-Guide-Volume-III - Abaqus user guide for material data, constitutive models, damage, EOS, field properties, porous media, and user materials
Abaqus-Analysis-User-s-Guide-Volume-IV - Abaqus user guide for element families, formulations, sections, connectors, special elements, particles, and element indexes
Abaqus-Analysis-User-s-Guide-Volume-V - Abaqus user guide for prescribed conditions, constraints, contact interactions, contact properties, diagnostics, contact elements, and cavity radiation
A-First-Course-in-the-Finite-Element-Method - Daryl L. Logan textbook introducing FEM through stiffness assembly and common structural, field, thermal, and dynamic elements

Domains

Computational Mechanics - finite element analysis, numerical methods, and engineering simulation

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Wiki Index

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