Stress extreme value optimization solution for infinitely corrugated core sandwich panel with circular opening under uniaxial tension
[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.
corrugated core sandwich panels with a holestress concentrationhole edge stressextreme value optimization solution
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