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Vector of basic random variables X=[r T D d]T, r, T, D, d showed respectively strength of material, torsion moment, the outside diameter and the inside diameter.
Acknowledgements This work was financially supported by China Postdoctoral Science Foundation funded project and the National Natural Science Foundation of China.
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(2) is stand for the material YBaCuO, is additive noise which is stand for impurities with different chemical elements of YBaCuO, and is a non-stationary random signal which is stand for the chemical elements of YBaCuO nano powder.
Acknowledgements This work was supported by Doctor Subject Foundation of Shaanxi University of Science and Technology under Grant No.BJ10-05, Department of Education of Shaanxi Province Scientific Research Special Funds under Grant No. 2010JK420 and Training Plan of University-level Academic Backbone of Shaanxi University of Science and Technology, 2010.
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China 2School of Materials Science & Engineering, Shaanxi University of Science & Technology, Xi’an, Shaanxi 710021, P.R.
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Investigation On Flexible Thixo-extrusion Of Complex Part Lv Xiao-leia, Wang Kai-kunb, Zhou Luc School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China aemail :xiaoleilu@foxmail.com, bemail :kkwang@mater.ustb.edu.cn, cemail :zhoulu_ustb@foxmail.com; Corresponding author: WANG Kai-kun; +86-010-62332598-6117 ; E-mail:kkwang@mater.ustb.edu.cn Keywords: flexible thixo-extrusion technology; velocity fields; effective strain fields; effective stress fields Abstract.
Fig. 1 Three-dimension entity models for flexible thixo-extrusion 2.2 Establishment of material model Material constitutive equation is a model of properties of material which is the premise and basis of thixotropic forming simulation.
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Acknowledgment It is supported by National Natural Science Foundation of China (50675189), Hebei Province Natural Science Foundation(E2012407010), Department of Education of Hebei Province (2011136).
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