Holistic multi-scale model of contact stiffness considering subsurface deformation

被引：4

作者：

Kono, Daisuke ^{[1
]}

Jorobata, Yuki ^{[1
]}

Isobe, Hiromi ^{[2
]}

机构：

[1] Kyoto Univ, Dept Microengn, Nishikyo Ku, Kyoto 6158540, Japan

[2] Nagaoka Univ Technol, Dept Mech Engn, 1603-1 Kamitomioka, Nagaoka, Niigata 9402188, Japan

来源：

CIRP ANNALS-MANUFACTURING TECHNOLOGY | 2021年 / 70卷 / 01期

关键词：

Stiffness; Stress; Multi-scale modelling;

D O I：

10.1016/j.cirp.2021.04.030

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The stiffness of mechanically fastened joints influences static and dynamic characteristics of machine tools. The conventional contact stiffness model considers only the deformation of roughness asperities based on uncertain topographic parameters. This study presents a holistic contact stiffness model considering the subsurface deformation and avoiding assumptions of topographic characteristics, which tend to introduce uncertainty. Subsurface deformation was also investigated via stress distribution measurements and finite element simulations. Using the proposed model, the stiffness of jointed parts was estimated with an error <15%. Moreover, the subsurface deformation's influence on contact surface design was discussed. (c) 2021 CIRP. Published by Elsevier Ltd. All rights reserved.

引用

页码：447 / 450

页数：4

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