Analysis of the Dynamic Stress Concentration Factor by the Two-dimentional Boundary Element Method

• MATSUMOTO H.

  Department of Mechanical Engineering, Tokyo Institute of Technology

• ADACHI Tadaharu

  Department of Mechanical Engineering, Tokyo Institute of Technology

• KAKUHAMA Yoshitaka

  Mitsubishi Heavy Industry

• FUKUZAWA Keiichi

  Canon

Abstract

Two-dimensional impulsive stresses are analyzed, by the boundary element method with the Laplace transformation and the numerical inversion using the fast Fourier transformation. The condition of the stability between the length of the element and the time step is given by the analysis. The validity of the condition is confirmed by the numerical results. Under the consideration of this condition, the dynamic stress concentration factors of the circular hole, the elliptic hole and the elliptic notch in a strip are obtained from surface forces and tengential derivatives of surface displacements. It is shown that the dynamic stress concentrations are spproximately ten percent larger than the static ones.

Journal

• JSME Int. J. Ser. I

  JSME Int. J. Ser. I 33 (1), 37-43, 1990

  The Japan Society of Mechanical Engineers

Keywords

• Boundary Element Method
• Computational Mechanics
• Elasticity
• Stress Concentration
• Impulsive Stress
• Laplace Transformation
• Stable Condition

Details

• CRID: 1573105976981184768
• NII Article ID: 110002347595
• NII Book ID: AA10680585
• ISSN: 09148809
• Text Lang: en
• Data Source:
  • CiNii Articles