Auto Parts Lightweight Design Based On Multi-objective Topology Optimization

With the increasingly fierce competition in the automotive market, automotive partsproduct performance requirements get higher and higher. How to ensure parts quality andPerformance indicators under the condition of fast and efficient implementation of rationaldistribution of automobile parts structure design and lightweight design, which has been animportant research topic in the field of structural design of auto parts.In this article, targeted to car parts, finite element technology and topology optimizationtechnique is used, part structural lightweight design and topological structure innovationdesign is studied. Taking into account the complexity and design of automotive partsoperation conditions indicators of diversity, firstly, model of multi-objective topologyoptimization about automotive parts structural topology innovations is established. And theadvantages and disadvantages of several commonly used methods for solving multi-objectiveoptimization are discussed. Then, based on fuzzy theory and Squared weighting method, amulti-objective planning method based on fuzzy satisfaction degrees and varies weight, iscame up with. This method uses the fuzzy satisfaction degree of every objective to constructthe weights of Squared weighting method, and dynamic adjust the weights of objectivesthrough fuzzy satisfaction degree of objective, achieves on the compromise planning of allobjectives. Thereby, let the performance indicators of design part reach design require.Finally, based on multi-objective topological innovative structure of automotive parts,combining the manufacturing process constraints of parts, the detailed design of parts isperformed. In this paper, using multi-objective topology optimization model constructed inthe paper and fuzzy satisfaction variable weight multi-objective planning method, thetopological structure innovative design and lightweight of several automotive parts areachieved. Currently, the accuracy and reliability of the structure of some parts optimized bythis method are verified by experimental.