电子设备吊装强度评估

Evalution of Hoisting Strength of Electronic Equipment

为满足市场对高功率密度产品的需求,电子设备内部元器件质量增大,但会导致柜体吊装时存在失效风险。对某型号电子设备升级换代后的吊装强度进行评估。针对电子设备中的不同位置,结合理论计算和有限元分析方法,发现风险点,并进行结构改进和验证。进行有限元分析时,针对柜体中零部件外形特点和受力情况,综合使用实体单元、壳单元、杆单元、质量点,尽可能减少网格数量,以提高仿真效率,从而快速找出结构中的风险点。使用子模型技术,针对关键位置进行网格细化,得到更为精确可靠的仿真结果。

In order to meet the market demand for high power density product,the mass of internal component of electronic equipment has increased,but it will lead to the risk of failure during cabinet hoisting.The hoisting strength of a type of electronic equipment after upgrading was evaluated.According to different positions in electronic equipment,as well as combining theoretical calculation and finite element analysis method,the risk point was identified,and structural improvement and verification were carried out.In the finite element analysis,according to the shape characteristic and stress condition of component in the cabinet,the solid unit,shell unit,rod unit,mass point were comprehensively used to reduce the grid number to the full.As a result,the simulation efficiency was improved,and the risk point in the structure can be quickly identified.Specifically,more accurate and reliable simulation result can be obtained by using submodel technology and performing mesh refinement on the key location.