김경종
69 lines
2.7 KiB
Markdown
69 lines
2.7 KiB
Markdown
---
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type: concept
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title: "Abaqus Matrix Generation and Reduced Models"
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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-000084
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aliases:
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- Abaqus matrix generation
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- Abaqus generated matrices
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- Abaqus reduced matrix models
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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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- matrix-assembly
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- model-reduction
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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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- "[[Abaqus Matrix-Based Model Definition]]"
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- "[[Abaqus Substructuring and Submodeling]]"
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- "[[Direct Stiffness Method]]"
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- "[[Finite Element Program Implementation]]"
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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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source_refs:
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- source: "[[Abaqus-Analysis-User-s-Guide-Volume-II|Abaqus Analysis User's Guide Volume II]]"
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raw_path: ".raw/AbaqusAnalysisUserGuide2/"
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raw_files:
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- "AbaqusAnalysisUserGuide2_081.md"
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- "AbaqusAnalysisUserGuide2_082.md"
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- "AbaqusAnalysisUserGuide2_075.md"
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md_indices:
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- 81
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- 82
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- 75
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match: "heuristic-heading-keyword"
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confidence: high
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---
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# Abaqus Matrix Generation and Reduced Models
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## Definition
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Abaqus matrix generation is a linear perturbation procedure that exports stiffness, mass, viscous damping, structural damping, and load matrices from an Abaqus model for reuse or exchange.
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## How It Works
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The procedure can generate global assembled matrices or element-by-element matrices. It can include preload and initial-stress effects when geometric nonlinearity is active, and it can write matrix data to SIM files or text formats for later Abaqus input or external software.
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The generated load matrix contains integrated nodal load vectors for load cases defined in the matrix generation step. Matrix generation can be scoped to an element set, to finite element contributions, or to matrix input contributions.
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## Why It Matters
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Matrix generation exposes the algebraic representation behind a finite element model without exposing the original mesh, material, or modeling details. It is useful for model exchange, vendor interaction, reduced-order workflows, and coupling finite element models with external simulation tools.
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## Connections
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- [[Abaqus Matrix-Based Model Definition]] covers the complementary input side: using matrices inside a model.
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- [[Direct Stiffness Method]] is the classical stiffness-assembly view behind generated matrices.
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- [[Finite Element Program Implementation]] provides the data-flow context from element matrices to global matrices and output.
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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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