期刊
SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES
卷 52, 期 9, 页码 2547-2554出版社
SCIENCE PRESS
DOI: 10.1007/s11431-009-0256-4
关键词
discontinuous deformation analysis (DDA); contact problems; open-close iteration; complementary theory; non-smooth analysis
The contact between blocks is treated by the open-close iteration in the conventional discontinuous deformation analysis (DDA), which needs to introduce spurious springs between two blocks in contact and to assume the normal stiffness and the tangential stiffness (the penalty factors). Unreasonable values of stiffness would result in numerical problems. To avoid the penalty factors and the open-close iteration, we reformulate the DDA as a mixed complementary problem (MiCP) and then choose the path Newton method (PNM) to solve the problem. Some examples including those originally designed by Shi are reanalyzed, which proves feasibility of the proposed procedure.
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