Frontal collision analysis of a minibus with CST

For the short energy absorption region of the minibus in the frontal crash,Based on the finite element pre-processing software VPG and post-processing software LSDYNA for the platform without thread cutting energy absorption devices or with thread shear energy absorption device,minibus models were built.The results show that the minibus without energy absorption device has large front deformation,so the vehicle occupant safety is treated.While the minibus with energy absorption device has smaller deformation than the minibus without energy absorption device,the acceleration curve of B pillar is more stable than non-absorbing device,so the car occupants are well protected.Therefore,the minibus collision energy absorption is greatly improved by the thread shear energy absorption device.