储能柜冲击试验仿真和随机振动疲劳寿命研究
Research on Impact Test Simulation and Random Vibration Fatigue Life of Energy Storage Cabinet
摘要: 超级电容的优良性能使其在轨道交通车辆的装车占比越来越大，为适应超级电容储能柜结构紧凑和较高的轻量化要求，对柜体结构进行强度仿真和疲劳寿命预估就变得越发复杂和重要。针对某列车储能柜，根据标准IEC 61373-2010，采用有限元分析软件，应用模态叠加法模拟了冲击试验过程中的受力情况，计算了随机振动环境下的响应，得到了结构的1σ、2σ、3σ Von Mises最大应力。利用材料的S/N曲线，并基于高斯分布和Miner提出的线性疲劳累计损伤理论，对结构在给定随机振动环境下的疲劳寿命进行了预估。结果验证了仿真方法的可行性，为产品的安全和可靠性设计提供依据。
Abstract: The excellent performance of super capacitor makes it more and more important to load in rail transit vehicles. In order to adapt to the compact and high lightweight requirements of super ca-pacitor energy storage cabinet, the strength simulation and fatigue life prediction of the cabinet structure become more and more complex and significant. For a train energy storage cabinet, ac-cording to the Standard IEC 61373-2010, the finite element analysis software is used to simulate the stress in the process of impact test by mode superposition method. The response under random vibration environment is calculated, and the maximum Von Mises stress of 1σ, 2σ, 3σ is obtained. Based on the S/N curve of the material, the fatigue life of the structure under the given random vibration environment is estimated based on the Gauss distribution and linear fatigue cumulative damage theory proposed by Miner. The results verify the feasibility of the simulation method and provide the basis for the safety and reliability design of products.
文章引用：李向东, 傅冠生, 邓谊柏, 赵如如. 储能柜冲击试验仿真和随机振动疲劳寿命研究[J]. 机械工程与技术, 2019, 8(6): 491-499. https://doi.org/10.12677/MET.2019.86057

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