带法兰椭圆形封头的有限元设计分析

Finite element design on elliptical head with flange

传统带法兰椭圆形封头设计方法设计周期长、试错成本高。本文采用ANSYS有限元应力分析技术对带法兰椭圆形封头进行建模仿真分析,并与其他研究人员进行的带法兰椭圆形封头的验证性实验结果进行对比,结果表明有限元应力分析技术可以满足工程应用要求。最后利用ANSYS软件中的优化设计功能,对带法兰椭圆形封头的壁厚进行设计优化,壁厚为8.03 mm时,最大等效应力和最小总质量分别为312.3 MPa和26.2 kg,相比壁厚为10 mm时最小总质量下降了16.5%,可以达到节省工程材料、提高经济效益的目标。

The traditional design method of elliptical head with flange has some problems,such as long design cycle,high cost of trial and error.ANSYS finite element stress analysis technology is used to conduct the modeling and simulation analysis of elliptical head with flange.The simulation results are compared with the experimental results of other researcher.The results show that the finite element analysis technology can satisify the requirements of engineering application.Finally,the wall thickness of elliptical head with flange is optimized using the optimization design function of ANSYS.When the wall thickness is 8.03 mm,the maximum equivalent stress and minimum total mass are 312.3 MPa and 26.2 kg respectively.Compared with the minium total mass with the wall thickness of 10 mm,the total mass is decreased by 16.5%,which can achieve the goals of saving engineering materials and improving economic benefits.