标题：Size-dependent responses of micro-end mill based on strain gradient elasticity theory
作者：Du, Yicong; Song, Qinghua; Liu, Zhanqiang; Wang, Bing; Wan, Yi
作者机构：[Du, Yicong; Song, Qinghua; Liu, Zhanqiang; Wang, Bing; Wan, Yi] Shandong Univ, Sch Mech Engn, Minist Educ, Key Lab High Efficiency & Clean Mech Manuf 更多
通讯作者：Song, Qinghua;Song, QH;Song, QH
通讯作者地址：[Song, QH]Shandong Univ, Sch Mech Engn, Minist Educ, Key Lab High Efficiency & Clean Mech Manufacture, Jinan, Shandong, Peoples R China;[Song, QH]Shan 更多
来源：INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
关键词：Micro-end mill; Size effect; Strain gradient elasticity theory; Static; deflection; Dynamic response
摘要：A significant size effect will occur on the tool part of micro-end mill due to its small diameter, which means the internal structure of the tool part material will affect the mechanical properties of the tool part. In view of this, a comprehensive method considering size effect is proposed in this paper to predict both the static and dynamic behaviors of micro-end mill more accurately. Based on the strain gradient elasticity theory (SGET) and Hamilton's principle, dynamic model of micro-end mill tool is presented, in which the Timoshenko beam model (TBM) considering the shear deformations and rotary inertia effects is employed. Based on the presented model, the static and dynamic behaviors of micro-end mill is obtained utilizing the finite element method (FEM). The influences of size effect on micro-end mill are investigated in detail by contrasting the static and dynamic behaviors of micro-end mill with different tool diameters and different length-to-diameter ratios, respectively. In order to verify the accuracy and efficiency of the presented method, an improved experiment is performed in this paper.