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《Mechanics in Engineering》 2006-01
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WANG Fengcai ZHU Wenqin Jiangyin Polytenic College, Jiangyin 214431, China  
In view of the fact that for the cold upset mold of the whole-mold structure, the fatigue life is rather short, a new design method is proposed to replace the whole mold with the mold structure of a three-layer cylinder and thus to change the loading on the mold and to achieve a longer life. According to the testing results of cold upset bolt and the results of stress analysis, empirical formulas are obtained.
【CateGory Index】: TG315.2
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