김경종
60 lines
2.8 KiB
Markdown
60 lines
2.8 KiB
Markdown
---
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type: concept
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title: "Abaqus Hyperelastic and Viscoelastic Materials"
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complexity: advanced
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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-000095
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aliases:
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- Abaqus hyperelasticity
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- Abaqus viscoelasticity
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- Abaqus elastomer materials
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- Abaqus Mullins effect
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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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- hyperelasticity
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- viscoelasticity
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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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- "[[Abaqus Elastic Material Models]]"
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- "[[Hybrid Incompressible Elements]]"
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- "[[Nonlinear Finite Element Analysis]]"
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- "[[Abaqus Thermal Expansion and Damping 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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---
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# Abaqus Hyperelastic and Viscoelastic Materials
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## Definition
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Abaqus hyperelastic and viscoelastic material models describe large-strain recoverable response and time- or frequency-dependent response, especially for rubberlike materials and elastomeric foams.
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## How It Works
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Hyperelastic models use strain energy potentials to describe finite-strain elastic response. The source lists rubberlike isotropic hyperelasticity, elastomeric foams, and anisotropic hyperelastic behavior. Rubberlike materials are often nearly incompressible, so Abaqus/Standard commonly requires hybrid continuum elements for highly confined nearly incompressible cases, while Abaqus/Explicit requires explicit compressibility because it cannot enforce exact incompressibility at each material point.
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The guide also covers stress softening and dissipation in elastomers. Mullins-effect modeling reduces stiffness after prior loading; elastomeric foam energy dissipation and permanent set models capture hysteretic or residual effects.
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Viscoelastic behavior appears in time-domain and frequency-domain forms. Time-domain models use relaxation behavior, while frequency-domain models describe storage and loss response. Nonlinear viscoelastic capabilities include hysteresis in elastomers and the parallel rheological framework.
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## Why It Matters
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Elastomer and foam models are strongly tied to nonlinear geometry, incompressibility, test-data calibration, and dissipation. A stable element and procedure choice is part of the material model, not a separate afterthought.
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## Connections
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- [[Hybrid Incompressible Elements]] are often required for nearly incompressible hyperelastic solids in Abaqus/Standard.
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- [[Nonlinear Finite Element Analysis]] supplies the finite-strain and contact-capable solution setting these models usually need.
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- [[Abaqus Thermal Expansion and Damping Materials]] connects thermal expansion and damping behavior that may be combined with elastomer models.
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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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