An application of the time-domain boundary integral equation method to dynamic crack propagation

✍ Scribed by Sambi R. Mettu; Kyung S. Kim

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 606 KB
• Volume: 39
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(91)90048-6

✦ Synopsis

An application of the time-domain boundary integral equation method (TBIEM) to the case of rapidly moving cracks in a continuum is presented. The major objective of this paper is to explore the potential of the TBIEM in solving problems in dynamic fracture where inertia effects cannot be ignored. In earlier investigations, the method proved to be accurate and efficient for stationary cracks under dynamic loading conditions. A survey of the literature indicates no attempt at applying this method to any dynamically moving crack problems. A linear supe~osition technique is applied to derive the solution for the case of moving cracks from that of a stationary crack under dynamic loading. Comparison of the numerical results with the exact solution for the case of a semi-infinite crack subjected to full and partial loading on the crack face shows good agreement. It is concluded that the present numerical scheme is a viable method for determining the dynamic stress intensity factors for running cracks,