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Time domain boundary element method for dynamic stress intensity factor computations

✍ Scribed by J. Dominguez; R. Gallego

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
911 KB
Volume
33
Category
Article
ISSN
0029-5981

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✦ Synopsis

This paper presents a procedure for transient dynamic stress intensity factor computations using traction singular quarter-point boundary elements in combination with the direct time domain formulation of the Boundary Element Method. The stress intensity factors are computed directly from the traction nodal values at the crack tip. Several examples of finite cracks in finite domains under mode4 and mixed mode dynamic loading conditions are presented. The computed stress intensity factors are represented versus time and compared with those obtained by other authors using different methods. The agreement is very good. The results are reliable and little mesh dependent. These facts allow for the analysis of dynamic crack problems with simple boundary discretizations. The versatile procedure presented can be easily applied to problems with complex geometry which include one or several cracks.

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