The transient stress analysis of the roll surface during laser strengthening
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1.
Key Laboratory of Advanced Manufacturing Technology, Beijing University of Technology, Beijing 100022, China;
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2.
Beijing BOE Corporation, Beijing 100016, China
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Received Date:
2003-12-08
Accepted Date:
2004-02-13
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Abstract
The roll surface experiences severe thermal circulation during the laser strengthening.Due to the concentration of the temperature field,the stress on the roll surface changes dynamically,and the transient distribution within the laser spot is mainly compressive.Furthermore,as the change of the specific volume of the micro-structure,the residual stress distribution after the laser treatment is very complicated.As a result,it is very difficult to measure the stress distribution experimentally.So it is a reasonable choice to simulate the distribution with the numerical method.
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References
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[1]
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YANEZ A,ALVAREZ J C.Modeling of temperature evolution on metals during lasers hardening process[J].Applied Surface Science,2002,186:611～616.[2] de la CRUZ P.Effect of laser hardening on the fatigue strength and fracture of a B-Mn steel[J].Int J Fatigue,1998,20(5):389～398.[3] 游敏,郑小玲.CO2激光焊接残余应力测试与分析[J].焊接技术,2002,31(3):17～18.[4] van BRUSSEL B A,de HOSSON J T M.Residual stresses in the surface layer of laser-treated steels[J].Materials Science and Engineering,1993,161:83～89.[5] WABG H G,GUAN Y H.A study of thermal stresses during laser quenching[J].Journal of Materials Processing Technology,1997(63):550～553.[6] 朱伯芳.有限单元法原理与应用[M].北京:中国水利水电出版社,1998.120～356.[7] JU D Y.Simulation of thermo-mechanical behavior and interfacial stress of metal matrix composite under thermal shock process[J].Composite Structure,2000,48:113～118.
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