Optimization and Analysis of Vibration Performance of Body Floor Based on Shape Optimization
The vibration transfer function from the suspension to the floor of a pickup truck body is obtained through calculation.Comparing the floor vibration curve of the reference model and the set target line,it is found that the peak value of the floor response point is beyond the target range.Modal contribution analysis is used to determine the maximum contribution modal frequency,and modal analysis is used to find the problem area,confirming the existence of local modes in the floor that are consistent with the peak frequency.The shape optimization is used to reoptimize the design of the floor reinforcement to improve the floor stiffness and reduce the floor vibration response amplitude.The floor vibration transfer function test is carried out on the real car body,and the accuracy of the calculation results is verified by comparing the floor vibration transfer function curves of the test and simulation.
body floormodalmodal contributionvibration performanceshape optimization
NETL
NSTL
万方数据
