【摘要】 为解决轻型鱼雷雷载设备振动环境复杂,实测数据不足的问题,针对鱼雷雷载电子设备振动环境开展研究。以有限元方法为基础建立了轻型鱼雷电子舱段的计算模型,使用ANSYS Workbench进行模态分析并提取了固有频率和振型等模态数据。通过与模态试验数据对比,验证了计算模型的正确性。随后使用模态叠加算法进行了各雷载设备振动环境预示。针对预示结果出现的隔板装配设备力学环境恶劣的问题,提出了改进措施。与原方案对比可知,改进方案的振动均方根数据降幅超过40%,具有工程实用价值,可在轻型鱼雷结构设计中推广。更多还原

【Abstract】 The vibration environment of lightweight torpedo borne electronic equipment is investigated to solve the problem of complex vibration environment and lack of vibration data, this study establishes a calculation model of the torpedo′s electronic cabinet based on finite element method, and calculates modal data, such as natural frequency and vibration modes, by using the software ANSYS Workbench. Comparing the calculated data with the modal testing data, the model is proved to be correct. The modal superposition method is employed to predict the vibration environments of the torpedo borne equipment based on this model. The prediction results show that the equipment assembled on baffle plate is subjected to a harsher vibration environment. So an improved design scheme is proposed to reduce the root mean square of vibration data by more than 40% comparing with the original design, which infers that the improved design scheme can be applied to the structure design of a lightweight torpedo.更多还原