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type, title, complexity, domain, created, updated, address, aliases, tags, status, related, sources
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| concept | Abaqus Explicit Analysis Efficiency Techniques | advanced | computational-mechanics | 2026-05-29 | 2026-05-29 | c-000087 |
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Abaqus Explicit Analysis Efficiency Techniques
Definition
Abaqus explicit analysis efficiency techniques adjust or monitor an Abaqus/Explicit run to reduce computational cost while preserving the needed accuracy.
How It Works
Mass scaling artificially increases element or model mass to increase the stable explicit time increment. It is commonly used in quasi-static explicit analyses and sometimes in dynamic analyses where a few very small or distorted elements control the global time increment.
Fixed mass scaling is applied once at the beginning of a step. Variable mass scaling can be applied during a step when stiffness, deformation, or element size changes significantly. The guide emphasizes that quasi-static uses can tolerate more scaling than true dynamic events, where physical mass and inertia must remain accurate.
The same chapter group also covers selective subcycling and steady-state detection. These techniques aim to avoid unnecessary explicit increments or focus small time increments where they are actually needed.
Why It Matters
Explicit dynamics is often limited by the stable time increment rather than by nonlinear iteration. Efficiency techniques can make contact, forming, impact, or quasi-static explicit workflows practical, but they can also corrupt inertia-sensitive results if used carelessly.
Connections
- Direct Time Integration Methods explains the explicit central-difference stability context.
- Abaqus Resource and Parallel Execution covers the hardware and parallel execution side of large explicit jobs.
- Abaqus Nonlinear Solution Control is the implicit counterpart: Abaqus/Standard cost is often governed by cutbacks and convergence iterations instead.