Lightweight Design of the Arm Frame of a Tracked Crane
To realize the lightweight of the crawler crane boom and fully improve the load-carrying performance of the boom material,the boom is optimized based on the variable density method of topology optimization of the continuum structure to avoid the problems of grayscale units and sawtooth boundaries in the optimization process.Taking the relative cell density as the design variable,the volume fraction as the constraint,and the minimum flexibility as the objective function,the topology optimization study of the crawler crane boom under static load is carried out,and the structural di-mensions of the crane boom end parameters are optimized based on the topology optimization based on the response sur-face optimization method.The results show that the mass is reduced by 22.1%,the maximum stress is reduced by 19.84%,the maximum strain is reduced by 53.71%after topology optimization,and the maximum stress is reduced by 8.12%and the maximum strain is reduced by 8.36%after response surface optimization.
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