Abstract
To address the problems of unstable and noisy compressor operation caused by excessive mass of the connecting rod of reciprocating piston compressor, a multi-objective topology optimization algorithm based on the compromise planning method is used to optimize the design of the connecting rod by considering both dynamic low-order inherent frequency and stiffness, and a multi-objective function of joint stiffness and inherent frequency is proposed. The finite element model is established and the optimized model is revalidated. The analysis results show that the optimized connecting rod mass is reduced by 21.6%, the low-order inherent frequency is improved, and the material meets the requirements of strength and stiffness.
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