CAE (Computer Aided Engineering)-based engine hood modal optimization method and device

The invention provides an engine hood modal optimization method and device based on CAE, and belongs to the technical field of engine hood design. The method comprises the following steps: establishing a simple TB model, carrying out iterative optimization on the engine hood until a single engine hood target model is met, carrying out TB modal analysis on the optimized engine hood, and carrying out iterative optimization again in a simple TB modal until a target is met. According to the method, the engine hood can be quickly optimized, and the calculation amount is greatly reduced. 本发明提供一种基于CAE的发罩模态优化方法及装置，属于发动机罩盖设计技术领域。本发明通过建立简易TB模型，对发罩进行迭代优化，直至满足单发罩目标模型，将优化后的发罩进行TB模态分析，在简易TB模态中再次进行迭代优化，直至满足目标。本发明能够快速的对发罩进行优化，大大减少了计算量。