[Objective]In order to study the stress distribution of circular holed infinite corrugated core sandwich panels under uniaxial tension and seek the most unfavorable opening position,[Method]both submodel analysis method and subproblem optimization method were employed just for calculation stress dis-tribution of different holing positions and seeking the holing position where the hole edge stress concentration factor reached the maximum,respectively.[Result]The stress distribution near the opening is closely re-lated to the mesh division,and the maximum stress always occurs on the core layer board.The stress concen-tration factor of an infinitely corrugated sandwich panel with a circular opening under uniaxial tension is gen-erally greater than 3,with a maximum of 4.104.[Conclusion]Undergoing the stress extreme value optim-ization analysis process of the overall model before the submodel can save computation time,achieve high computational accuracy,and improve optimization efficiency.
关键词
开孔波纹夹层板/应力集中/孔边应力/极值优化求解
Key words
corrugated core sandwich panels with a hole/stress concentration/hole edge stress/extreme value optimization solution
维普
万方数据