Transactions of Materials and Heat Treatment

Title：Optimization on structure of strip rigid protrusion based on multi-island genetic algorithm

Authors： Mao Jianzhong Xiao Fei Guo Lingzhi Zhou Hui

Unit： Hunan University

KeyWords： strip rigid protrusion shape parameter stiffness finite element analysis multi-island genetic algorithm

ClassificationCode：TL333

year,vol(issue):pagenumber：2018,43(11):180-184

Abstract：

As one of the important components of nuclear fuel, the structure of strip rigid protrusion plays an important role in the positioning and clamping of fuel rod in the nuclear fuel assembly, and the shape structure changes of rigid protrusion affect the stiffness value and the clamping stability of the fuel rod. Therefore, ensuring reasonable rigid protrusion structure is important to improve the positioning and clamping of the fuel rod and the stability of the transportation process. However, the strip rigid protrusion is a stamped part, and its shape and structure parameters has an important influence on the stiffness of rigid protrusion. Therefore, the influences of the shape and structure parameters on the stiffness of rigid protrusion were analyzed, and the shape and structure parameters of the strip rigid protrusion were optimized by the response surface method and multi-island genetic algorithm. The optimization results show that the maximum deformation of optimized rigid protrusion structure under the same working conditions is reduced by 0.0123 mm, and the stiffness of the rigid protrusion is increased by about 42%.

Funds：

国家重大科技专项子项（2013ZX06004009）

毛建中（1963-），男，博士，教授,E-mail：18974889636@163.com

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