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学历：博士研究生毕业
学位：工学博士学位
性别：男
学科：力学. 航空宇航科学与技术. 材料科学与工程. 机械工程. 冶金工程. 先进制造. 航空工程. 材料工程. 冶金工程. 机械工程. 固体力学
多尺度与微纳米力学，梯度结构材料，界面力学，固体本构关系，应变梯度理论，晶体塑性有限元，离散位错动力学，分子动力学，高熵合金，大数据与机器学习，材料基因，极端力学，高性能材料
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2020-03-21 合作发表的论文Forced vibration analysis of blade after selective laser shock processing based on Timoshenko beam theory在期刊 Composite Structures 上在线发表
Highlights
•A vibration model for the blade after laser shock processing is established.
•A simple approach for forced vibration of non-uniform beams is proposed.
Abstract
The main purpose of this paper is to theoretically explore the effect of selective laser shock processing (LSP) on the forced vibration response of blade based on the functionally graded (FG) Timoshenko’s beam theory. Considering the complexity of direct solution caused by gradient distribution of elastic modulus, pre-stress, and variable cross-section, the actual blade after selective LSP is simplified into a series of uniform segments. The pre-stress is transformed into an additional excitation load by an integral technique, and thus an analytical solution for this type of segment can be obtained. Then, in order to avoid solving the additional integration constants, a simple semi-analytical solution for the forced vibration of rotating pre-stressed FG beam with arbitrary cross-section is presented by using the continuity condition of deformation, and the effects of strengthened position, thickness of strengthened layer and single-sided/double-sided shock mode on the amplitude of vibration response are discussed, respectively. The results show that the selective LSP can effectively suppress the vibration deflection by enlarging the strengthened zone, deepening the strengthened layer and employing the double-sided shock.
Link
https://doi.org/10.1016/j.compstruct.2020.112249