基于数学模型的发动机舱盖锁舌曲面优化

Shape optimization of engine hood locking tab based on mathematic model

针对发动机罩非正常下落导致无法锁止的问题,推导非线性微分方程并采用泛函求解,将工程问题转化为力学数学模型。根据数学模型优化发动机舱盖锁舌曲面,采用有限元法搭建仿真模型。分析结果表明,基于数学模型的有限元法可以高效准确地模拟发动机舱盖关闭过程中锁的实际运动过程,优化结果可为发动机罩锁舌优化提供思路。

As to the lock failure of the engine hood under unexpected falling,the nonlinear differential equations are deduced and then solved by generalized functions,and then the engineering problem is transformed into mathematic models of mechanics.The locking tab shape of engine hood is optimized by the mathematic model,and the finite element method is used to build the simulation model.The analysis results show that the actual movement process of the lock during the engine hood closing is efficiently and accurately simulated by the finite element method based on the mathematic model,and the optimization results can provide ideas for the optimization of the engine hood locking tab.