A new methodology for main bearing cap design was presented based on topological optimization and shape optimization. In topological optimization, filter functions of elements with respect to the unit volume and stiffness matrices were selected based on RAMP interpolation scheme. In shape optimization, efficient derivatives have been obtained by using approximate-difference strategy. Structural volume was taken as objectives and structural responses such as displacements, stresses were taken as constraints. This kind of model ensured consistency in topological optimization and shape optimization model. Volume of main bearing cap has been minimized subject to rigidity and strength constraints. The feasibility and efficiency of the proposed methods were demonstrated by the experiment.
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龙凯,左正兴.基于拓扑优化和形状优化方法的主轴承盖结构设计[J].农业机械学报,2008,39(4):152-156.[J]. Transactions of the Chinese Society for Agricultural Machinery,2008,39(4):152-156.