김경종
66 lines
3.6 KiB
Markdown
66 lines
3.6 KiB
Markdown
---
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type: concept
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title: "Abaqus Geomaterial and Concrete Plasticity"
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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: 2026-06-02
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address: c-000097
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aliases:
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- Abaqus Drucker-Prager plasticity
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- Abaqus cap plasticity
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- Abaqus Mohr-Coulomb plasticity
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- Abaqus clay plasticity
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- Abaqus concrete plasticity
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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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- plasticity
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- geomaterials
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- concrete
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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 Metal Plasticity Models]]"
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- "[[Abaqus Porous Media and Pore Fluid Materials]]"
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- "[[Nonlinear Finite Element Analysis]]"
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- "[[Mixed Finite Element Formulations]]"
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- "[[Finite Element Plasticity]]"
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- "[[Plasticity Yield Criteria]]"
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- "[[Plastic Flow Rules and Hardening]]"
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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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- "[[Finite-Elements-in-Plasticity-Theory-and-Practice|Finite Elements in Plasticity: Theory and Practice]]"
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---
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# Abaqus Geomaterial and Concrete Plasticity
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## Definition
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Abaqus geomaterial and concrete plasticity models describe pressure-dependent inelastic response, compaction, dilatancy, cracking, crushing, and stiffness degradation for soils, rocks, foams, jointed materials, and concrete-like media.
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## How It Works
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The source separates these models from ordinary metal plasticity because hydrostatic pressure can strongly influence yielding and volume change. Extended Drucker-Prager models represent pressure-dependent materials such as granular materials and polymers. Modified Drucker-Prager/Cap models add a cap yield surface to control volumetric compaction. Mohr-Coulomb and critical-state clay models support geotechnical applications with pressure and invariant-dependent yield behavior.
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Crushable foam models target energy-absorbing foams and similar crushable media. Jointed material behavior represents continua containing dense sets of joint surfaces, such as sedimentary rock. Concrete is represented by multiple models: smeared cracking in Abaqus/Standard, brittle cracking in Abaqus/Explicit, and concrete damaged plasticity in both solvers.
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[[Finite-Elements-in-Plasticity-Theory-and-Practice|Finite Elements in Plasticity: Theory and Practice]] provides the classical finite element plasticity context for this page's pressure-dependent models. It treats Mohr-Coulomb and Drucker-Prager criteria alongside metal-style criteria and highlights the role of non-associated flow rules for frictional materials.
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## Why It Matters
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These materials cannot usually be modeled by metal-style pressure-insensitive plasticity. They require pressure-dependent yield surfaces, inelastic volumetric strain, tensile cracking, crushing, or damage recovery effects that are tied to element choice, confinement, and loading path.
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## Connections
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- [[Mixed Finite Element Formulations]] are relevant when volumetric locking or pressure-like fields dominate the response.
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- [[Abaqus Porous Media and Pore Fluid Materials]] extends geomaterial modeling to pore-fluid flow and saturation effects.
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- [[Nonlinear Finite Element Analysis]] supplies the global iteration framework for pressure-dependent plasticity and concrete damage.
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- [[Plasticity Yield Criteria]] separates pressure-dependent Mohr-Coulomb and Drucker-Prager behavior from pressure-insensitive metal plasticity.
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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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- [[Finite-Elements-in-Plasticity-Theory-and-Practice|Finite Elements in Plasticity: Theory and Practice]]
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