Minimum Weight Optimization of Composite Laminated Struts

摘要

A formulation for minimum weight optimization for composite laminated struts isgiven. The minimum weight strut satisfies failure criterion of local buckling, overall buckling and maximum strain or maximum stress. Seven types of strut shapes, six composite materials and aluminum alloy are considered. The formulation requires the evaluation of the buckling coefficient for both ends with one side simply supported and one side free for composite laminated plates of high aspect ratio. The method of evaluation is given. A computer program OPTSTRUT for carrying out the optimization procedure is described. Examples of strut design are carried out using this program and compared with existing designs. It was found that these results compared well with those from past investigators.