Reduction of Calculation Time for Load Path U* Analysis of Structures

• SAKURAI Toshiaki

  慶應義塾大学大学院理工学研究科

• KAWAKAMI Hiroshi

  慶應義塾大学理工学部

• ABE Masatoshi

  慶應義塾大学理工学部

• TAKAHASHI Kunihiro

  Department of Mechanical Engineering, Keio University

Bibliographic Information

Other Title

• 構造物の荷重経路Ｕ｀＊´解析におけるＦＥＭ計算の高速化
• コウゾウブツ ノ カジュウ ケイロ U カイセキ ニ オケル FEM ケイサン ノ コウソクカ

Abstract

The parameter U^* has been introduced by the authors to indicate load paths in a structure. The most serious problem encountered when calculating U^* for actual structures is the high computation time required. In this study, we propose two methods for reducing the time of FEM calculations required to obtain U^* distributions. In the first method, essential terms are extracted from the inverse stiffness matrix and these terms are used to calculate the internal stiffness. In the second method, three independent inspection loadings are applied to each point. In this operation, the multi-displacement condition is converted into the multi-loading condition. An actual structure is calculated using this second method ; the decrease rate in calculation time is over 90 percent.

Journal

• TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A

  TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series A 73 (733), 975-980, 2007

  The Japan Society of Mechanical Engineers

Keywords

• Structural Analysis
• Finite Element Method
• Computational Mechanics
• Numerical Analysis
• Load Transfer
• Load Path

Details

• CRID: 1390282679455159168
• NII Article ID: 110006404743
• NII Book ID: AN0018742X
• DOI: 10.1299/kikaia.73.975
• ISSN: 18848338
• ISSN: 03875008
• NDL BIB ID: 8956719
• Web Site: http://id.ndl.go.jp/bib/8956719
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8956719
• Web Site: http://www.jstage.jst.go.jp/article/kikaia1979/73/733/73_733_975/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed