김경종
74 lines
3.0 KiB
Markdown
74 lines
3.0 KiB
Markdown
---
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type: concept
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title: "Abaqus Thermal Expansion and Damping Materials"
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complexity: intermediate
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domain: computational-mechanics
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created: 2026-06-01
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updated: 2026-06-01
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address: c-000100
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aliases:
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- Abaqus material damping
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- Abaqus Rayleigh damping
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- Abaqus thermal expansion
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- Abaqus field expansion
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- Abaqus viscosity
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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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- damping
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- thermal-expansion
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- materials
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status: current
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related:
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- "[[Abaqus-Analysis-User-s-Guide-Volume-III|Abaqus Analysis User's Guide Volume III]]"
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- "[[Direct Time Integration Methods]]"
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- "[[Finite Element Thermal Stress Analysis]]"
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- "[[Abaqus Hyperelastic and Viscoelastic Materials]]"
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- "[[Abaqus Transport Acoustic and Electromagnetic Materials]]"
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sources:
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- "[[Abaqus-Analysis-User-s-Guide-Volume-III|Abaqus Analysis User's Guide Volume III]]"
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source_refs:
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- source: "[[Abaqus-Analysis-User-s-Guide-Volume-III|Abaqus Analysis User's Guide Volume III]]"
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raw_path: ".raw/AbaqusAnalysisUserGuide3/"
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raw_files:
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- "AbaqusAnalysisUserGuide3_061.md"
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- "AbaqusAnalysisUserGuide3_062.md"
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- "AbaqusAnalysisUserGuide3_043.md"
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- "AbaqusAnalysisUserGuide3_012.md"
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md_indices:
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- 61
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- 62
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- 43
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- 12
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match: "heuristic-heading-keyword"
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confidence: high
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---
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# Abaqus Thermal Expansion and Damping Materials
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## Definition
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Abaqus thermal expansion and damping material definitions add dissipative, thermally induced, field-induced, and viscous effects to otherwise mechanical material behavior.
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## How It Works
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Material damping includes Rayleigh damping for direct-integration, steady-state, subspace-based, and mode-based dynamic analyses. The mass-proportional factor damps low-frequency motion through a mass contribution, while the stiffness-proportional factor is interpreted as viscous material damping tied to elastic stiffness and strain rate.
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Thermal expansion defines thermal strain from temperature change and reference temperature. Field expansion follows the same pattern but uses user-defined field variables rather than temperature. Both can be isotropic, orthotropic, or anisotropic, and both can be tied to initial temperature or field-variable values. The guide also covers viscosity definitions for Newtonian and non-Newtonian shear behavior.
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## Why It Matters
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These material definitions connect structural response to dynamic dissipation and environmental fields. They are often small compared to primary stiffness or plasticity, but they can dominate thermal stress, modal damping, explicit stability, and coupled-field accuracy.
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## Connections
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- [[Direct Time Integration Methods]] uses damping in transient and steady-state dynamic response.
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- [[Finite Element Thermal Stress Analysis]] uses thermal expansion to convert temperature changes into strain and stress.
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- [[Abaqus Hyperelastic and Viscoelastic Materials]] overlaps with dissipative response in elastomers and foams.
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## Sources
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- [[Abaqus-Analysis-User-s-Guide-Volume-III|Abaqus Analysis User's Guide Volume III]]
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