Modal Optimization of White Body Based on Sensitivity Method
This paper uses finite element method to optimize the first order torsion and first order bending modes of the white body,and uses sensitivity method to identify the key panels that affect these two modes.The thickness of these panels is used as a design variable to increase modal frequency and reduce body weight.After optimization,the first order torsion and first order bending modes are increased by 1.06 Hz,and the total weight is reduced by 8.8 kg.Sensitivity analysis can calculate the contribution of the thickness of each panel to the mode of interest,which can be intuitively reflected in the cloud image.It can also reduce body weight,improve fuel economy,and reduce costs while increasing natural frequency.This method can also be used in body lightweight.
万方数据
维普
