Overview of Research of Rollovers

This paper describes the research of rollovers of passenger cars and proposes a ramp type test as a typical dynamic rollover test with evaluations of occupant injuries and vehicle deformation in accordance with various parametric functions. Many types of rollover tests have been conducted in the past and they have their merits and demerits. However, the ramp rollover test has a characteristic to evaluate both dummy injuries and vehicle deformations, and to perform tests under many conditions by exchanging ramp dimensions, steer timings made rotation and velocity of the vehicle.

微型乘用车顶部抗压强度研究

根据FMVSS216《顶部抗压强度》法规进行某微型车顶部抗压试验,建立其有限元模型,利用LS-DYNA进行仿真实验,通过将仿真结果与试验结果和法规要求进行对比分析,验证了整车有限元模型的正确性和有效性,分析顶部施压时整车主要的承载部件。利用该模型进行顶部抗压强度优化设计,增加主要承载部件的厚度。仿真结果表明,主要承载部件的吸能能力增强,且承载能力提高,客车的顶部耐撞性有较好的提升效果。