舱段结构热振耦合环境下仿真分析

针对武器装备对环境适应性要求不断提高的现状,以某舱段结构为研究对象,基于高加速应力筛选试验(HASS)条件,研究了结构在温变-振动耦合环境下的失效机理。首先,结合HASS试验剖面,确定了载荷条件,建立有限元模型;其次,采用ANSYS Workbench软件分析得到结构温度场分布及应力响应,确定了结构危险位置,并对其疲劳寿命进行计算分析,为舱段结构的失效分析及HASS试验剖面的合理制定提供依据和指导。

Numerical Study on the Cabin Structure under Coupled Thermal and Vibration Condition

In view of the current situation that the requirements of weapon equipment for environment adaptability is being constantly improved, based on the highly accelerated stress screening (HASS) test, the failure mechanism of a cabin structure under coupled thermal and vibration condition is studied. First, the boundary condition is determined by the HASS scheme, and a finite element model is established. Then, the temperature distribution and stress response are obtained by the ANSYS Workbench software. The weak point of the cabin is determined, and the fatigue life is calculated and analyzed. This research work can provide theoretical support and guidance for the failure analysis of the cabin structure and the reasonable design of HASS test profiles.