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RESEARCH PAPERS

Dynamic Finite Element Analyses of Two Compact Specimens

[+] Author and Article Information
A. S. Kobayashi, A. F. Emery, W. J. Love

Department of Mechanical Engineering, University of Washington, Seattle, Wash. 98195

Y. Urabe

Mitsubishi Heavy Industries, Takasago Technical Institute, Takasago, Japan

S. Mall

Department of Mechanical Engineering, University of Maine, Orono, Me. 04473

J. Eng. Mater. Technol 100(4), 402-410 (Oct 01, 1978) (9 pages) doi:10.1115/1.3443511 History: Received April 10, 1978; Online August 17, 2010

Abstract

A dynamic finite element code was used to compute the dynamic stress intensity factors and crack arrest stress intensity factors which are related to the crack run-arrest responses in longitudinal and transverse wedge-loaded compact specimens machined from A533B and 1018 steels, respectively. Measured crack velocities were used to prescribe crack motions in the longitudinal and transverse wedge-loaded compact specimens under fixed wedge displacements. The numerical analyses show that approximately 45 percent additional energy is input during the crack propagation phase in the former compact specimen while the rigid loading system in the latter results in essentially quasi-static crack extension.

Copyright © 1978 by ASME
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