Abstract:

Study on optimum design of ply orientation angles for natural frequencies of composite plates with random elastic constant.From the rigid matrix of monolayer plate,provides the rigid features of laminated composite plate as well as certain model with first intrinsic frequency.According to random chance constrained theory put forward by Liu,the chance constrained programming model about Maximax and Minimax of first intrinsic frequency is provided.On the basis of experiment and that random theory hypothesis elastic constant obey the experience distribution,the bringing out of experience distribution random datum of elastic constant datum as well as the algorithm dealing with random chance constrained is provided.Then the solution method of genetic algorithm based on random analogy is given.Finally,a specific living instance or the state that composite rectangle plate first optimization supported by four sides testifying the validity of the solution method of genetic algorithm based on ra...

Key words: laminated composite, natural frequencies, random analogy, genetic algorithm