Study for 2D moving contact elastic body with closed crack using BEM |
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Authors: | PU Junping YAO Zhenhan |
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Institution: | (1) College of Aerospace Engineering, Nanjing Univ. of Aeronautics & Astronautics, 210016 Nanjing, China;(2) Dept. of Engineering Mechanics, Tsinghua University, 100084 Beijing, China |
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Abstract: | Using a sub-regional boundary element method, an algorithm for the two-dimensional elastic bodies with a closed crack loaded
by a moving contact elastic body is proposed. Since the extent and status of the contact surface of two elastic bodies and
the crack within the body are all not known in advance, a double iterative contact algorithm is used. The BEM program for
solving the closed crack problems is developed, some numerical examples are calculated, and the results of the center crack
cases are shown to be in good agreement with the analytical solution in the classical fracture mechanics. In the condition
of friction and non-friction, some coupling computational results of the SIF for the closed crack, with different angles and
loaded by a moving contact elastic body, are also obtained by a numerical computation.
The project supported by the National Natural Science Foundation of China (10172053) and NJTU Foundation of China (PD-157) |
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Keywords: | moving contact closed crack sub-regional method BEM SIF |
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