JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2012, Vol. 42 ›› Issue (1): 115-120.

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Flow stress determination of aluminum alloy 7050-T7451 using cutting experiment inverse analysis methods

WANG Hong-ru1, WANG Zhong-qiu1, 3*, ZHANG Qian2, LI Jian-feng3, SUN Jie3   

  1. 1. Shandong Provincial Key Laboratory of Ocean Environment Monitoring Technology, Shandong Academy of
    Sciences Institute of Oceanographic Instrumentation, Qingdao 266001, China;
    2. School of Mechanical, Electrical & Information Engineering, Shandong University at Weihai, Weihai 264209, China;
    3. School of Mechanical Engineering, Shandong University, Jinan 250061, China
  • Received:2010-10-25 Online:2012-02-20 Published:2010-10-25

Abstract:

 Based on the Oxley slip-line theory, two-dimensional orthogonal cutting experiments in conjunction with an analyticalbased computer code were used to determine Johnson-Cook flow stress data of aluminum alloy 7050-T7451 in metal cutting. The strain range was 0.61~1.12, the strain rate range was 10263~69941, and the temperature range was 95~248,which were covered by the model. In order to verify the flow stress model, cutting experiments were done in the same cutting parameter range used in determining the flow stress. By comparing the results obtained by experiments and FEM using the flow stress model as input, the maximum error between cutting forces simulated obtained by FEM and obtained by experiments were less than 15%, and the maximum error of temperature was less than 11%.

Key words:  flow stress, cutting methods, inverse analysis, aluminum alloy 7050-T7451, finite element method

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