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AIAA Aerospace Sciences Meeting and Exhibit; (2005), p. 1293
Journal of Chang chun University of Technology(Natural Sciences Edition); (2009), Vol. 30, No. 2, pp. 173–177
Journal of Air Force Engineering University(Natural Science Edition); (2009), No. 4
Journal of Air Force Engineering University(Natural Science Edition); (2010), No. 3
Journal of Mathematical Sciences; (1995), Vol. 77, No. 6, pp. 3537–3539

The typical ROPS usually has a framework comprised of thin-walled rectangular tubes, which are made of the metal materials such as mild carbon steel (for example Q235A) and so on [1].
The material shear fracture is a large deformation process with the material nonlinear and geometry nonlinear.
Acknowledgement The work described in this paper is supported by the National Natural Science Foundation of China (50775095).
Reid: International Journal of Mechanical Sciences, Vol. 43(9) (2001), p.2147-2170
Wu, et al: Journal of Materials Processing Technology, Vol.59(1-2) (1996), p.68-78.

Introduction The grain-oriented silicon steel is the key materials to develop electricity and telecommunications, and it is a kind of product of high value and high barriers and the process of producing grain-oriented silicon steel is long, and complex , it has been the symbol of the highest level of manufacturing in steel enterprise.
Test Materials and Methods Test Materials.
Test materials are the continuous casting thin slab which are provided by some factory, the chemical compositions are shown in Table 1.
Acknowledgements The authors express their gratitude to the financial support of the Natural Science Foundation of Hebei Province (E2009001498), the Natural Science Foundation of Nation (51074062) and Science Fund for Distinguished Young of Hebei Province (E2011209029).
References [1] Zhongzhi He: Metallic Functional Materials Vol. 4 (1997), p. 243-245 (in Chinese) [2] Tomoji K: Method for producing grain oriented silicon steel sheet having excellent magnetic property (2002) [3] Hans P: Process for the production of grain-oriented electric quality sheet with low remagnetization loss and high polarization (2003) [4] Kubota T, Fujikura M and Ushigami Y: Journal of Magnetism and Magnetic Materials (2000) [5] Xiaoyan Wang, Xuehua Liu and Jing Yao: Iron and Steel Research Vol. 34 (2006), p. 58-62 (in Chinese) [6] Ruoping Wang, Shide Li and Zemin Fang: Heat Treatment of Metal Vol. 34 (2009), p. 1011 (in Chinese) [7] Yongmei Yu: Ph.D.

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Introduction Borate glasses are one of the most popular and excellent glass forming materials.
A proportional amount of raw materials such as boric oxide(B2O3), zinc oxide (ZnO) and lead oxide(PbO) are well mixed to ensure that the sample is homogeneous.
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(3) Vibration frequency and amplitude The vibration frequency should be close to the natural frequency of materials to enhance the compaction effect.
Its structure depends on mineral skeleton structure, the structure of asphalt, the characteristics of the interaction of mineral materials and asphalt, the density of asphalt binder and the characteristics of its pore gap structure.
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Material of work piece is aluminum alloy (LD6).
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Materials and Methods Dynamic Instability Mechanism of Radial Gate Arms.
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According to the material removal order in the slot feature’s final machining, layers with equal height are combined to a relatively independent hierarchy,which is called Same Height Machining Layer(SHML) and can be showed as Fig.1 Fig.1 SHML’s combination Layers are divided into internal projections, independent ribs, grooves and other sub-layer(Fig.2).
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