김경종
97 lines
4.4 KiB
Markdown
97 lines
4.4 KiB
Markdown
---
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type: concept
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title: "Abaqus Surface and Assembly Modeling"
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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: 2026-06-01
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address: c-000074
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aliases:
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- Abaqus surfaces
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- Abaqus assemblies
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- Abaqus part instances
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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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- contact
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- assembly
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status: current
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related:
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- "[[Abaqus-Analysis-User-s-Guide-Volume-I|Abaqus Analysis User's Guide Volume I]]"
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- "[[Abaqus-Analysis-User-s-Guide-Volume-V|Abaqus Analysis User's Guide Volume V]]"
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- "[[Abaqus Spatial Model Definition]]"
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- "[[Finite Element Contact Formulation]]"
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- "[[Abaqus Contact Interaction Definition]]"
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- "[[Abaqus Surface-Based Constraints and Couplings]]"
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- "[[Abaqus Cavity Radiation Interactions]]"
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- "[[Finite Element Load Vector Assembly]]"
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- "[[ABAQUS]]"
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sources:
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- "[[Abaqus-Analysis-User-s-Guide-Volume-I|Abaqus Analysis User's Guide Volume I]]"
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- "[[Abaqus-Analysis-User-s-Guide-Volume-V|Abaqus Analysis User's Guide Volume V]]"
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source_refs:
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- source: "[[Abaqus-Analysis-User-s-Guide-Volume-I|Abaqus Analysis User's Guide Volume I]]"
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raw_path: ".raw/AbaqusAnalysisUserGuide1/"
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raw_files:
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- "AbaqusAnalysisUserGuide1_022.md"
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md_indices:
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- 25
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- 26
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match: "heuristic-heading-keyword"
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confidence: high
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- source: "[[Abaqus-Analysis-User-s-Guide-Volume-V|Abaqus Analysis User's Guide Volume V]]"
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raw_path: ".raw/AbaqusAnalysisUserGuide5/"
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raw_files:
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md_indices:
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match: "heuristic-heading-keyword"
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confidence: high
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---
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# Abaqus Surface and Assembly Modeling
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## Definition
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Abaqus surface and assembly modeling is the workflow for defining named geometric interfaces and reusable part-instance structures in an Abaqus model.
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## How It Works
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Surfaces are named regions used for contact and interactions, distributed loads, tie and coupling constraints, cavities, radiation, pretension sections, integrated output sections, and free body output. The guide distinguishes element-based, node-based, analytical rigid, and Eulerian material surfaces. Surface definitions have orientation and normal direction, but they are geometric or topological abstractions rather than volumetric elements.
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[[Abaqus-Analysis-User-s-Guide-Volume-V|Volume V]] shows the consequences of those surface definitions: the same surface infrastructure drives general contact, contact pairs, surface-based tie and coupling constraints, shell-to-solid coupling, contact properties, diagnostic output, and cavity radiation facets.
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Assemblies organize reusable parts and positioned instances. A part contains its own nodes, elements, sets, surfaces, and sections; an instance places that part into the assembly. The assembly then defines interactions, constraints, and analysis-level references between instances. Names are scoped within parts, instances, and the assembly.
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Typical input-file boundaries are `*PART` / `*END PART`, `*INSTANCE` / `*END INSTANCE`, and `*ASSEMBLY` / `*END ASSEMBLY`.
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## Why It Matters
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Surfaces and assemblies are the practical bridge between mesh topology and engineering modeling. They allow a finite element model to express contact interfaces, distributed loads, constraints, and repeated components without flattening everything into one global node and element list.
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## Connections
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- [[Finite Element Contact Formulation]] depends on stable surface definitions for interface constraints.
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- [[Abaqus Contact Interaction Definition]] defines the contact domains and pairs that consume surfaces.
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- [[Abaqus Surface-Based Constraints and Couplings]] uses surfaces to connect mismatched meshes and reference points.
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- [[Abaqus Cavity Radiation Interactions]] uses element-based surfaces as radiating facets.
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- [[Finite Element Load Vector Assembly]] uses surfaces when distributed surface tractions or pressures are converted into equivalent nodal terms.
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- [[Abaqus Spatial Model Definition]] supplies the nodes, elements, and sets that surfaces and assemblies reference.
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## Sources
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- [[Abaqus-Analysis-User-s-Guide-Volume-I|Abaqus Analysis User's Guide Volume I]]
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- [[Abaqus-Analysis-User-s-Guide-Volume-V|Abaqus Analysis User's Guide Volume V]]
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