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| Evolution characteristics of residual stresses in medium-thick plate during thinning process |
| CUI Jin-xing1， HAN Shi-chao2， SUN Jian-liang1， PENG Yan1 |
| （1. National Engineering Research Center for Equipment and Technology of Cold Strip Rolling， Yanshan University，Qinhuangdao 066004， Hebei， China； 2. Xugong Environmental Technology Co.， Ltd.， Xuzhou 221400， Jiangsu，China） |
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Abstract The redistribution law of the transverse residual stress due to the thinning of the medium and heavy plate was studied to understand the deformation mechanism of the medium-thick plate in service. Based on the theory of the peeling method，the residual stress distribution model and the deflection deformation model in the thinning process of the medium-thick plate were established，and the plate thinning process was simulated by the finite element method. The results of the residual stress distribution and the deflection degree of the plate were compared with those of the finite element simulation，which verified the feasibility of the two methods. Furthermore，the effect of the stress distribution and the thickness reduction on the thinning process was further analyzed. The results showed that both analysis results could reflect the deformation characteristics of the plate thinning process，but the results of the finite element simulation method were more accurate，which changed the restraint state of plate with thinning process. The research results provide a theoretical basis for the rational production design and use of medium-thick plate.
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Received: 17 September 2018
Published: 09 May 2019
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2019, Vol. 54 
