文献类型：期刊文献

英文题名：Theoretical modeling and analysis for laser shock tensioning process of circular saw blade

作者：Li, B.[1] Zhang, Z. K.[]

第一作者：李博

通信作者：Li, B[1]|[a000584776639363b7421]李博;

机构：[1]Chinese Acad Forestry, Res Inst Forestry New Technol, Beijing 100091, Peoples R China; Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2019

卷号：114

起止页码：181-189

外文期刊名：OPTICS AND LASER TECHNOLOGY

收录：;EI(收录号：20190606483606);Scopus(收录号：2-s2.0-85061100973);WOS:【SCI-EXPANDED(收录号:WOS:000461535000028)】；

基金：We gratefully acknowledge the financial support of Fundamental Research Funds for the Central Non-profit Research Institution of CAF (No. CAFYBB2017SY039 and CAFYBB2019QB006) and National Natural Science Foundation of China (No. 31600458).

语种：英文

外文关键词：Laser shock; Circular saw blade; Tensioning; Stress; Natural frequency

摘要：It needs an extremely large number of elements for a relatively accurate finite element simulation of laser shock tensioning process of circular saw blade, which results in extremely low computational efficiency. It is important to analyze and understand the evolution rule of circular saw blades dynamic characteristics after laser shock tensioning process. Therefore, for a more systematic study of laser shock tensioning process, a theoretical model for tensioning stress field and natural frequency was built based on finite element method, reasonable simplifications and assumptions. By comparing theoretical analysis and measured results, the theoretical model was proved to be correct. Theoretical analysis results show that beneficial tangential tensile tensioning stress with a certain value is produced in the outer edge of circular saw blade after laser shock tensioning process. Natural frequencies of circular saw blade for nodal circle Nc = 0 and nodal diameter Nd >= 2 are increased obviously with impact zone radius and peak pressure of laser shock wave, which means that the dynamic stability of circular saw blade is improved after laser shock tensioning process.