Modeling Method of Assembled Structure Coupling the Characteristics of the Joints

Abstract:

Mechanical properties of the joints have impacted on the whole mechanical characteristics. Coupling the joint characteristics in the modeling of the machine tool is an important problem in machine mechanics analysis. In order to solve the joint modellings in the assembled structure, this paper presents a new method to creat beam elements between two symmetrical nodes on the contact surface of the joint. The stiffness and damping matrices of the elements are valuated according to the characteristics of the joint. To validate the accuracy of the proposed method, the modeling of an assembled structure with and without the joints is obtained and some corresponding experimental investigations are implemented. The error between the simulated and experimental results of the finite element model is less than 8.8%, while the error of the contact model often used in the existing literatures is one times bigger than the proposed model.

• Periodical: Advanced Materials Research (Volumes 468-471)
• Pages: 2141-2148
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.468-471.2141
• Online since: February 2012
• Authors: Tie Neng Guo, Xue Li Yu, Fu Ping Li, Li Gang Cai, Ya Hui Cui
• Keywords: Assembled Structure, Finite Element Model (FEM), Joint, Machine Tool

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