SobolGSA Sensitivity Analysis and Multi Objective Optimization of Commercial Vehicle Rollover Safety
To improve the Rollover Safety of a commercial vehicle and meet the ECE R29-03,the static rollover simulation and optimization based on SobolGSA were carried out.The static rollover simulation test is carried out to extract and analyze the roll-over simulation results;The key structural size of the the vehicle after simulation are selected as variables,the maximum safe dis-tance and total energy absorption are taken as objectives,the modal frequency and the acceleration of A-pillar are taken as con-straints,and a high-precision model is generated by SIGHT-DOE.The MOP of vehicle rollover safety is carried out by using NSGA-Ⅱ algorithm;SobolGSA method is used to verify the sensitivity of rollover factor.The first-order sensitivity of the five thickness factors reaches 26%,which are all significant factors.The results show that the total energy absorption is increased by 22.38%,and the head living space is increased by 16.8mm,which meets the requirements of the regulations on Rollover Safety and achieves the purpose of improving the Rollover Safety of commercial vehicles.
万方数据
维普
