Complete workflow for static structural analysis. Use when analyzing stress, displacement, or reaction forces under constant loads. For strength and stiffness evaluation.
日本語に翻訳 name: abaqus-static-analysis
description: Complete workflow for static structural analysis. Use when analyzing stress, displacement, or reaction forces under constant loads. For strength and stiffness evaluation.
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Skill
Abaqus Static Analysis Workflow
Complete workflow for static structural analysis - stress, displacement, and reaction forces under constant loads.
When to Use This Skill
Route here when user mentions:
"stress analysis", "structural analysis"
"how much will it deflect", "displacement"
"is this strong enough", "strength check"
"factor of safety", "safety factor"
"reaction forces", "support loads"
"simulate a load on this part"
Route elsewhere:
Time-varying loads, impact, vibration → /abaqus-dynamic-analysis
Natural frequencies, resonance → /abaqus-modal-analysis
Temperature effects, thermal stress → /abaqus-coupled-analysis
Heat transfer only → /abaqus-thermal-analysis
Parts touching, friction → /abaqus-contact-analysis
Workflow Steps
Execute these skills in order:
Step Skill Purpose 1 /abaqus-geometryCreate part and assembly 2 /abaqus-materialDefine material properties 3 /abaqus-meshGenerate finite element mesh 4 /abaqus-bcApply supports and constraints 5 /abaqus-loadApply forces and pressures 6 /abaqus-stepConfigure analysis step (optional - default is fine) 7 /abaqus-jobRun the analysis 8 /abaqus-odbExtract results
What to Ask User
Required Information
Input What to Ask Geometry "What are the dimensions? (e.g., 100x50x20 mm)" Material "What material? (Steel, Aluminum, or custom E/v)" Supports "How is it supported? (fixed face, pinned points, rollers)" Loads "What loads? (force magnitude, location, direction)"
Optional (Has Defaults)
Input Default Ask If Mesh size Auto-calculated Stress concentrations present Element type C3D8R Complex curved geometry Nonlinear OFF Large deformation expected
Key Decisions
Linear vs Nonlinear Analysis
Condition Setting When Small deformation, linear material nlgeom=OFF Displacements < 1% of part size Large deformation or rotation nlgeom=ON Thin structures, rubber, cables Yielding expected nlgeom=ON + Plasticity Stress > yield strength
Default: Start with linear. Switch to nonlinear if convergence issues or large deformation.
What Results to Extract
User Goal Output Variables Acceptance Criteria Strength assessment S (stress), MISES MISES < yield stress Stiffness check U (displacement) Max deflection acceptable Support sizing RF (reaction force) Reactions match applied loads
Validation Checkpoints
After Each Step
Step What to Verify Geometry Part has cells, no error messages Material Section assigned to all cells Mesh Node count OK (Learning Edition: <=1000) BCs At least one fixed constraint exists Loads Applied to correct surface/point Job Completes without errors in .sta file
Results Sanity Checks
Check Expected Reaction force sum Approximately equals applied loads Displacement magnitude Physically reasonable Stress pattern Follows logical load path Max stress location At expected concentration points
Troubleshooting
Error Cause Solution "Zero pivot" Rigid body motion Add more BCs to constrain all 6 DOFs "Negative eigenvalue" Buckling or instability Check BCs, may need stabilization "Too many increments" Load too large Reduce load or use more increments "Equilibrium not achieved" Convergence failure Try smaller initial increment "Memory exceeded" Mesh too fine Increase element size
Feedback Loops
Mesh fails: Return to geometry, add partitions or simplifyZero pivot error: Return to BCs, ensure all rigid body modes constrainedUnreasonable results: Verify material properties, check load direction/signStress too high: Either design issue (expected) or incorrect BC/load setup
Code Patterns
For API syntax and code examples, see: