Rollover far side roof strength test and simulation

Rollovers are severe road accidents. The main injured parts of occupants' body in rollover are the head and neck that make contact with roof interior during this accident scenario. The more the roof structure intrudes during the rollover process, the higher is the chance of impact contact. Real-world rollover accidents roof damages and PC-CRASH rollover reconstruction of vehicle dynamic analysis show far side structure to experience more severe load in the rollover. To simulate this experimentally, roof crush test rig was designed and built on the basis of the rollover ground-roof interaction analysis. Full-size roof crush test was carried out and later numerically modelled using LS-DYNA 3D. Numerical simulation results show good agreement with test results. The methodology of testing, simulation and evaluation of vehicle structure provided a useful tool for safety car design aspects. The validated model provides a reliable platform for future structure optimisation.