Equivalent material parameters of mechanical joint

2017 International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Shi, Kun^1 ; Zhang, Guangpeng^1

School of Mechanical and Precise Instrument Engineering, Xi'An University of Technology, Xi'an, China^1

关键词: Computational model;    Contact modeling;    Contact theory;    Hertz theory;    Material parameter;    Mechanical joints;    Uniform distribution;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/322/4/042010/pdf
DOI  :  10.1088/1757-899X/322/4/042010

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The characteristics of the mechanical joint is the significant element influencing the analyzing results of the whole structure. The stiffnesses of the mechanical joint are deduced from the relationship between the displacement and uniform distribution of the joint in this direction, which is obtained by the experiment. The equivalent material parameters of the mechanical joint, including the modulus of elasticity and the poisson ratio, are derived from the stiffness of the joint by adopting the Hertz theory, the contact theory of Hertz-Mindilin and the Greenwood and Williamson contact model. The paper take a structure containing mechanical joint as an example, and the computational model of the structure was set up by the finite element method. A comparison of the computational and testing results is shown to illustrate the feasibility and validity of the equivalent material parameters.