Narrow Results

Threshold beam is a primary energy absorbing structure, and is also important part to minimize the occupant injury in side impact. This paper mainly introduced the material of high strength steel used on the Threshold beam's lightweight research. The correspondence between completed car test and component test is made from aspects of deformation, energy and force transmission. Then a component crash test for threshold beam is built, with which the crash performance of threshold beam system in completed car impact test can be evaluated. This model of threshold beam crash test can be used on lightweight research, after the optimization the weight of threshold beam system is reduced without risk of lowing crashworthiness performance, in order to promote the safety performance.

At present, more and more high strength steel are applied in the automotive industry due to their promising achievements in light-weight and crashworthiness. To verify the safety attribution of high strength steel components, this paper deals with the performance evaluation of the threshold beam used for high strength steel on its rigidity and crashworthiness. In the three-point static compression test, two threshold beams using different high strength steel are used and their performance are compared to each other. Then, a component simulation model is built, with which the crash performance of the threshold beam system in the completed car impact test can be evaluated. Finally, a white body test is carried out to analyze the threshold of the beam’s dynamic performance using different high strength steel.