김경종
57 lines
2.5 KiB
Markdown
57 lines
2.5 KiB
Markdown
---
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type: concept
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title: "Abaqus Explicit Analysis Efficiency Techniques"
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complexity: advanced
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domain: computational-mechanics
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created: 2026-05-29
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updated: 2026-05-29
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address: c-000087
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aliases:
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- Abaqus mass scaling
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- Abaqus selective subcycling
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- Abaqus steady-state detection
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tags:
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- concept
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- finite-element-method
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- abaqus
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- explicit-dynamics
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- performance
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status: current
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related:
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- "[[Abaqus-Analysis-User-s-Guide-Volume-II|Abaqus Analysis User's Guide Volume II]]"
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- "[[Direct Time Integration Methods]]"
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- "[[Abaqus Resource and Parallel Execution]]"
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- "[[Abaqus Nonlinear Solution Control]]"
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sources:
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- "[[Abaqus-Analysis-User-s-Guide-Volume-II|Abaqus Analysis User's Guide Volume II]]"
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---
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# Abaqus Explicit Analysis Efficiency Techniques
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## Definition
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Abaqus explicit analysis efficiency techniques adjust or monitor an Abaqus/Explicit run to reduce computational cost while preserving the needed accuracy.
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## How It Works
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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.
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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.
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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.
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## Why It Matters
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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.
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## Connections
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- [[Direct Time Integration Methods]] explains the explicit central-difference stability context.
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- [[Abaqus Resource and Parallel Execution]] covers the hardware and parallel execution side of large explicit jobs.
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- [[Abaqus Nonlinear Solution Control]] is the implicit counterpart: Abaqus/Standard cost is often governed by cutbacks and convergence iterations instead.
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## Sources
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- [[Abaqus-Analysis-User-s-Guide-Volume-II|Abaqus Analysis User's Guide Volume II]]
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