Application of XFEM using only Heaviside step function to nonlinear structural analyses

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K04761
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Computational science
• Research Institution: Sophia University
• Principal Investigator: NAGASHIMA Toshio 上智大学, 理工学部, 教授 (10338436)
• Co-Investigator(Kenkyū-buntansha): 末益 博志 上智大学, 理工学部, 教授 (20134661)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 計算力学

Outline of Final Research Achievements

The extended finite element method (XFEM) using only Heaviside step function to model discontinuity of displacement field was applied to nonlinear structural analyses. Both three-dimensional 8-node hexahedral and 6-node pentahedral solid finite elements enriched with only Heaviside step function were formulated and the proposed method was implemented to the analysis software. The method was validated through elastic plastic analyses of a cracked metallic plate under uniform tensile load and damage propagation analyses of a CFRP specimen with an open hole under tension load.

Free Research Field

総合理工，計算科学