传统法和有限元法复杂转鼓强度分析及比较

Strength Analysis and Compare of a Complex Structural Drum by Traditional Methods and Finite Element Method

虹吸式离心机转鼓是结构最复杂的离心机转鼓之一,随着离心机越来越大型化,大型复杂转鼓的强度设计要求越来越高。对某大型虹吸式离心机复杂转鼓组件进行强度分析。首先采用传统方法进行应力和变形分析,并利用MATLAB编程进行电算;然后通过有限元法三维实体建模,模拟出转鼓的复杂局部结构和边界条件,采用ANASYS软件对其应力和变形分布进行分析计算。结合两种方法的计算结果,对转鼓强度设计的合理性进行了较全面和深入地评估。同时,两种方法的计算结果的对比,也能在某种程度上保证分析方法的可靠性。这也为其它离心机转鼓强度设计提供了参考。

Drum of rotational siphon peeler centrifuge is one of the most complex structures of centrifuge drums. As development of large scale centrifuge, strength design for the complex structural drum has been given an increasing emphasis. Strength analysis for the drum of a large scale siphon centrifuge was conducted in this paper. Firstly, stress and deformation of the drum were analyzed by traditional methods and the calculation was done using computer programming of MATLAB. A 3D solid model was then established by means of finite element method in order to simulate complex partial structures and boundary conditions of the drum. ANSYS software was used to calculate and analyze the distribution of stress and deformation. Based on the calculation results of two methods, the strength design reasonability of the drum was comprehensively evaluated. Meanwhile, the reliability and availability of both methods could be verified to some extent by the comparison of results. This work provided an instance for the strength design of other similar drums.