压铸铝合金防爆箱体失爆分析及优化设计

Analysis and Optimum Design of Explosion Loss Case of Die Casting Aluminum Alloy

对压铸铝合金防爆箱体失爆分析,针对设计缺陷进行优化设计,采用Solidworks Simulation对压铸铝合金防爆箱体进行静力分析,其分析结果证明法兰螺纹孔在轴向力的作用下存在应力集中,超过了壳体最大屈服应力值,进行了优化螺纹孔设计方案,对优化后的结构重新分析以及过压1.5 MPa压力模拟测试。优化设计隔爆面结合区域通过软件自带的传感器点测,在箱体内壁施加1 MPa压力后,屈服应力最大值已由原来的402 MPa降为193 MPa,最大合位移已由0.028 29 mm降为0.018 66 mm,通过耐压试验和点燃不传爆试验。

Failure analysis of die casting blast aluminum alloy explosion-proof box, for optimizing the design of design defects, using Solidworks Simulation for die casting aluminum alloy explosion-proof box for static analysis. The analysis results show that the stress concentration in the role of flange threaded holes in the axial force, more than a maximum yield stress value, the structure is optimized the design of screw hole design scheme of the optimized structure analysis and 1.5 MPa overpressure pressure simulation test. Optimization design of flameproof surface combined with the sensor area through the software comes with the test, applying a pressure of 1 MPa in the inner wall of the box body, the maximum yield stress have increased from 402 MPa to 193 MPa and the maximum displacement of 0.028 29 mm has been reduced to 0.018 66 mm, the pressure test and the lighting transmission explosion test.