摘要
为了研究内嵌向心关节轴承的装配式铸钢节点的受力性能,找出更为合理的构造,采用ANSYS对装配式铸钢节点及其内嵌向心轴承的受力情况进行了有限元分析,并对铸钢节点的复杂受力部分进行了优化设计。首先,通过在1.2倍受拉设计荷载作用下,铸钢件A和向心关节轴承内环表面上4个应变较大的点与足尺试验结果的对比,验证了有限元模型的正确性;然后采用有限元模型计算了向心关节轴承在1.7倍受压荷载设计值作用下内环的三维受力情况,分析了其破坏机理;最后,在保证质量与体积的比值最小且最大应力在控制范围内的目标下,对向心关节轴承中销轴和内环的尺寸参数进行了优化设计。研究结果表明,与试验只能测得铸钢件表面的应变相比,采用三维有限元分析能更加真实完整地反映向心关节轴承的应力应变情况,而优化分析可在保证结构可靠度的同时,进一步提高向心关节轴承材料的利用率。
In order to investigate the structural behaviors of the packaged cast-steel joint with a radial spherical plain bearing and find out a more reasonable structure,the finite element analysis and optimization analysis was conducted using ANSYS.Firstly,four test points on the surface of the cast steel A and bearing were compared with the test results under the tension design load of 1.2 times of working condition.The curvature tolerance showed the accuracy of the finite element model.Secondly,the three-dimensional stress and strain distribution and failure mechanism of the inner ring was analyzed under the pressure design load of 1.7 times of working condition.Finally,the optimization analysis,limiting the quality and volume under the allowable stress,was conducted to find the most reasonable parameter of the radial spherical plain bearing.It is found that the stress and strain analysis of the radial spherical plain bearing through ANSYS is more complete and reality than the test,the material utilization of the radial spherical plain bearing can be further enhanced through the optimization.
出处
《四川建筑科学研究》
2014年第4期45-49,66,共6页
Sichuan Building Science
关键词
铸钢节点
优化分析
向心关节轴承
cast steel nodes
optimization analysis
radial spherical plain bearing
