Abstract: In response to the potential deformation issues caused by dynamic vehicle impact during the testing process of the designed and developed automotive spiral rollover test bench, this paper employs the LS-DYNA finite element simulation method to construct a finite element model of the corkscrew rollover test bench. Through simulation analysis of the automotive corkscrew rollover scenario under extreme conditions, the structural strength and dynamic response characteristics of the test bench are evaluated, and an improved optimization plan is proposed to address its existing shortcomings. The analysis results indicate that the optimized spiral rollover test bench can effectively meet the strength requirements for automotive spiral rollover tests, significantly enhancing the reliability and stability of the test bench during experiments.

Key words: corkscrew rollover; test bench; finite element analysis; structural improvement

摘要： 针对设计开发的汽车螺旋翻滚台架在试验过程中因车辆动态碾压可能导致变形的问题， 文章采用 LS-DYNA 有限元仿真方法，构建了螺旋翻滚台架的有限元模型。通过对极限条件 下汽车螺旋翻滚工况的仿真分析，评估了台架的结构强度与动态响应特性，并针对其存在的 缺陷提出了改进优化方案。分析结果表明，优化后的螺旋翻滚台架能够有效满足汽车螺旋翻 滚试验的强度要求，显著提升了台架在试验中的可靠性与稳定性。

关键词: 螺旋翻滚；试验台架；有限元分析；结构改进