Optimal Design for Minimizing Weight of Housing of Hydraulic Breaker

유압 브레이커의 중량 감소를 위한 하우징 최적설계

  • Received : 2010.08.19
  • Accepted : 2010.11.20
  • Published : 2011.02.01


A hydraulic breaker is an attachment installed at the end of excavator arm and is used for breaking. As per the authors' knowledge, there have been no research results on reducing the weight of the hydraulic breaker even though this weight reduction is very important for improving the performance of the excavator. In this study, we minimize the weight of the housing of the hydraulic breaker under normal operating conditions, while the maximum stress of the housing is lower than the allowable stress. A meta-model, which is generated by using the CAE results for the sampling design points determined by an orthogonal array, is used to solve the minimization problem. The weight of the housing according to the optimal design is found to be lower than the original weight by 4.8% while satisfying the constraint on the maximum stress.


Hydraulic Breaker;Polynomial Regression;Support Vector Regression;Orthogonal Array;Evolutionary Algorithm


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