【摘要】 为确保复杂路况下车辆爆胎应急装置的可靠性，利用ANSYS有限元软件建立爆胎应急装置的热力耦合有限元模型，研究不同温度场变化对爆胎应急装置结构性能的影响，并对危险部位进行不同温度环境下的应力测试.结果表明：随温度升高，爆胎应急装置的最大变形值及危险部位的最大应力值均逐渐增大，并且装置内圈会产生一定的应力与变形，较常温(20℃)时，极限低温(-25℃)环境下应力减幅约17%,极限高温(100℃)环境下应力增幅约43%,最大应力值均小于材料的屈服强度，符合安全使用要求，故该装置在极限温度环境下具有较好的稳定性与可靠性.更多还原

【Abstract】 In order to ensure the reliability of the vehicle tire burst emergency device under complex road conditions, the thermal coupled finite element model of the tire burst emergency device is established by using ANSYS finite element software, and the influence of different temperature field changes on the structural performance of the tire burst emergency device is studied, and the stress tests under different temperature environments are carried out for the dangerous parts. The results show that with the increase of temperature, the maximum deformation value of the emergency device and the maximum stress value of the dangerous part increase gradually. And the inner ring of the device produces certain stress and deformation. Compared with normal temperature at 20 ℃, the stress decreases by about 30 MPa under extreme low temperature(-25 ℃) environment, and increases by about 80 MPa under extreme high temperature(100 ℃) environment. The maximum stress value is less than the yield strength of the material, which meets the requirements of safe use. Therefore, the device has good stability and reliability under the limit temperature environment.更多还原