Transactions of Materials and Heat Treatment

Title：Optimization design on forging rocker arm of large hydraulic loader

Authors： Qi Minjie Song Kexing Zhang Xuebin Yu Yiluo Lu Changqing Chen Xuefu

Unit： Henan University of Science and Technology Henan Key Laboratory of Advanced Non-ferrous Metals TYO Group Corporation

KeyWords： hydraulic loader rocker arm Latin hypercube sampling quadratic polynomial response surface neighborhood cultivation genetic algorithm (NCGA)

ClassificationCode：TG315

year,vol(issue):pagenumber：2016,41(9):88-91

Abstract：

A finite element model of the forging rocker arm of large hydraulic loader was built by ANSYS

software, and the static analysis under the maximum working load was carried out to obtain the

distribution of displacement and stress. On the basis of the static analysis, the optimization

design for weight reduction of the rocker arm was carried out by the Latin hypercube

experimental design methods and quadratic polynomial response surface model with the

application of genetic algorithm (NCGA) iterative solution on the premise of unchanged

mounting dimensions of rocker arm and satisfied stiffness and strength of rocker arm.

Construction of 3D solid model of the rocker arm was given, and the static analysis under the

maximum load was carried out. The analysis results show that the optimized stiffness and

strength of rocker arm can meet the working demand. In addition, the weight deduces about

59.98 kg. Thus, the raw material is saved and the production cost is reduced.

Funds：

河南省科技厅科技攻关项目（132102210122）

齐敏杰（1990-），女，硕士研究生宋克兴（1967-），男，博士，教授

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