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《Chinese Journal of High Pressure Physics》 2015-01
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Study on Residual Stress of Big Tilling Depth Rotary Blade for Laser Shock Peening

XI Xiao-Bo;MIAO Hong;ZHAO Li;ZHU He-Lin;ZHANG Rui-Hong;JIN Yi-Fu;College of Mechanical Engineering,Yangzhou University;  
The effect of residual stress of big tilling depth rotary blade with 350 mm turning radius for laser shock peening(LSP)was researched,and the theoretical stress of rotary blade were analyzed by ANSYS.The stress concentration region was at the outer corner of tool shank.The LSP process was also simulated by ANSYS and the theoretical introduced value of the residual stress was obtained.Value of residual stress before and after LSP were tested by X-ray stress meter.The results show that the simulation value fits well with the experimental value,and the residual stress after LSP changes effectively with the maximum reaches 412.25 MPa and a amplification of 166%.The introduced residual compressive stress could eliminate the stress concentration of the working rotary blade,and raise its using life.It provides a new basis for further improvement and optimization of big tilling depth rotary blade's manufacture technique.
【Fund】: “十二五”农村领域国家科技计划课题(2011BAD20B03-02);; 江苏省农机三新工程项目(NJ2012-11);; 江苏省科技支撑计划(BY2012164 BE2014356)
【CateGory Index】: TG665
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