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February 28, 2026Japanese Journal of JSCE0 citations

On Validation of Automatic Assembly of Structural Component Analysis Models to Build Large-Scale Structural Analysis Model

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WHWataru HottaNMNaoto MITSUMENMNaoki MORITA

Key Points

  • The research aims to develop a method for automatically setting multibody constraint conditions in large-scale structural analysis models using finite element methods.
  • Developed mathematical approaches for analyzing multibody constraint conditions.
  • Implemented a technique to eliminate degrees of freedom for multibody constraints.
  • Utilized conjugate gradient method for solving global stiffness matrix equations without increased computational burden.
  • Tested the method using small- to medium-scale analysis models.
  • Confirmed that displacement continuity is maintained at contact surfaces with set multibody constraints.
  • Validated that the computational load of the conjugate gradient method does not increase with the imposed constraints.

Abstract

重要構造物の精緻な耐震性評価には，有限要素法の大規模解析モデルを自動構築することが必要とされる．本論文は，多数の部材モデル群を連結させた大規模解析モデルの自動構築のために，適切な多点拘束条件（mpc）を自動的に設定する手法を開発した．この手法の特徴は，mpc条件式を数理的に解析することでmpcの自由度消去の適用を可能とし，全体剛性マトリクス方程式を解く共役勾配法の計算負荷が増加しないようにmpcを設定するという二点である．小規模と中規模の解析モデルを使って，mpcが設定された接触面の変位連続性と共役勾配法の計算負荷が増大しないことを確認し，この二点に関する手法の有効性を検証した．

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Cite This Study

Hotta et al. (2026) studied this question.

synapsesocial.com/papers/69a286490a974eb0d3c01172https://doi.org/10.2208/jscejj.25-15014
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