复合材料科学与工程Issue(5)：121-129,9.DOI:10.19936/j.cnki.2096-8000.20260528.016
碳纤维发动机罩多目标优化设计
Optimization design of carbon fiber engine hood
摘要
Abstract
To achieve the lightweight of the engine hood while ensuring its stiffness and strength and other per-formance,a multi-variable coupling multi-objective optimization method was adopted.The engine hood with carbon fiber outer panel and metal inner panel was designed.Based on the principle of equal stiffness,the initial thickness of the carbon fiber outer panel of the engine hood was determined.The metal plate was restructured based on topology optimization,and three inner panel structure schemes were obtained.Considering the influence of inner panel materi-al,inner panel structure,inner panel thickness and carbon fiber outer panel ply thickness on the performance of the engine hood,Latin hypercube sampling was used,and on this basis,a radial basis function(RBF)neural network surrogate model was constructed for multi-variable coupling multi-objective optimization.To obtain the best carbon fiber ply sequence,the ply sequence of the outer panel was optimized in OptiStruct.The optimization results show that the static performance of the designed engine hood system meets the design requirements,and the mass is reduced by 51.27%compared with the original engine hood.关键词
发动机罩/拓扑优化/轻量化/复合材料Key words
engine hood/topology optimization/lightweight design/composite materials分类
通用工业技术引用本文复制引用
康元春,李盈莉..碳纤维发动机罩多目标优化设计[J].复合材料科学与工程,2026,(5):121-129,9.基金项目
汽车动力传动与电子控制湖北省重点实验室创新基金(2015xtzx0407) （2015xtzx0407）
