期刊
OCEAN ENGINEERING
卷 192, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.oceaneng.2019.106507
关键词
Elasto-plasticity; Meshfree methods; Ship hull; Dynamic response; Large deformation
资金
- National Numerical Wind Tunnel Project of China [2018-ZT2B05]
- Industrial Technology Development Program of China [JCKY2018604C010, JCKY2017604C002]
In present work, a meshfree framework for the numerical simulation of elasto-plasticity deformation of ship structure is established. The reproducing kernel particle method (RKPM) is adopted to discretize the calculation domain, and the meshfree shell formulation is derived based on Mindlin shell theory. Then a general elastoplasticity model is established under the meshfree shell framework, and the stress resultants are avoided since the shell formulation is based on degenerated continuum approach. By removing the normal stress from the yield function, the zero normal stress assumption is implemented. Several numerical examples are studied and the accuracy of the present elasto-plasticity model is verified. Finally, the dynamic response of the ship cabin and real ship structure under impact load are calculated, the capability of the present meshfree approach applied in complex engineering structures analysis is demonstrated.
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