船用电子机柜力学性能仿真计算  

Simulation calculation on mechanical properties of marine electronic cabinet

作　　者：罗贤成 LUO Xiancheng(Jiangsu Automation Research Institute,Lianyungang 222061,China)

机构地区：[1]江苏自动化研究所,江苏连云港222061

出　　处：《指挥控制与仿真》2024年第6期110-116,共7页Command Control & Simulation

摘　　要：为了指导和优化结构设计,提出了一种快速预测船用电子机柜力学试验性能的数值模拟方法。根据船用电子设备结构力学试验标准,对某型船用电子机柜进行力学试验仿真分析。首先,利用有限元软件ANSYS建立电子机柜的有限元模型;其次,基于有限元数值求解方法,计算机柜的模态频率、正弦扫频响应、颠震响应和冲击响应;最后,根据计算结果对机柜进行强度校核,验证机柜力学设计可靠性。结果表明,机柜壳体顶部和底部直角、侧面凸台以及背部直角附近的应力较高,但都低于机柜壳体铸件的最大许用应力;机柜在各个试验条件下具有较高的可靠性。船用机柜的力学性能仿真计算方法对同类型的其他电子设备力学分析具有较好的参考价值。In order to guide and optimize structural design,this paper proposes a numerical simulation method for quickly predicting the mechanical test performance of marine electronic cabinets.According to the structural mechanics test standard of marine electronic equipment,the mechanical test simulation analysis of a type of marine electronic cabinet is carried out.Firstly,the finite element model of the electronic cabinet is established by ANSYS.Secondly,based on finite numerical solution method,the modal frequency,sine sweep vibration response,bumping response and shock response of the cabinet were obtained.Finally,according to the calculation results,the strength of the cabinet is checked,and the mechanical reliability of the cabinet is analyzed.The results show that the stresses near the right angles at the top and bottom,side boss and the right angles at the back are relatively high,but they are all lower than the maximum allowable stress of the cabinet,and the cabinet can work reliably under various test conditions.The modeling and analysis method presented in this paper can provide a good reference for the mechanical analysis of similar electronic equipment.

关 键 词：机柜 模态频率 正弦扫频 冲击响应 

分 类 号：U674.7[交通运输工程—船舶及航道工程]