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Fig. 5 Pre-drawing FEM model Fig. 6 Inverse-drawing FEM model The 36# material model is used for blank, and the material is HRS(hot rolled steel) SAPH440, which is widely used in such automotive parts as frame and wheel etc that have high demand on formability and machinability.
Acknowledgement The research work is jointly sponsored by the National Natural Science Foundation of China (No. 51075077), Guangxi Key Laboratory of Manufacturing System & Advanced Manufacturing Technology Projects (No. 07109008_00 9_Z, 09-007-05S013), Teams for Innovation in the Construction of Talent Highlands in Guangxi Institutions of Higher Learning and The Guangxi Science Fund for Young Scholars (No. 2010GXNSFB013005).
Ruan: Chinese Journal of Mechanical Engineering, Vol. 42 (2006), p. 211 [2] W.
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Li: Journal of plasticity engineering.

The Young’s moduli of the steel and concrete material are 210 and 25 GPa, respectively.
The densities of the steel and concrete material are se7900 and 2500 kg/m3, respectively.
Acknowledgements The writers are grateful for the financial support from the National Natural Science Foundation of China (51178366), the Natural Science Foundation of Hubei Province (2014CFA026), the open fund of the Engineering Research Center for Bridge Safty Monitoring and Reinforcing of Hubei Province (QLZX2014013) and the self-determined and innovative research funds of WUT (Undergraduate project No. 146606002).
Journal of Sound and Vibration, 1997, 205(1), 1-18
A new damage index for detecting sudden change of structural stiffness, International Journal of Structural Engineering and Mechanics, 26(3): 315-341 (SCI)

The steel ball is already applied in the each realm of the national economy, which is made of special materials, such as 9Cr18, 3Cr13, copper, aluminum, titanium alloy, agate, glass, porcelain and ceramics ball etc..
TRANSACTIONS OF MATERIALS AND HEAT TREATMENT, Vol. 32(3) (2011), p. 62 (In Chinese) [4] Yanyu Wei, Yubin Gong, Wenxiang Wang: J.
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Introduction In order to purposefully improve the properties of structural materials, it is not always necessary to create new materials.
Vincent, Microstructural development in equiatomic multicomponent alloys, Materials Science and Engineering A. 375-377 (2004) 213-218
Chen, On the superior hot hardness and softening resistance of AlCoCrxFeMo0.5Ni high-entropy alloys, Materials Science and Engineering A. 528 (2011) 3581-3588
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They are important in high plastic deformation since they can significantly affect the properties of the materials, and are often the precursors to fracture and the preferred sites for the eventual failure of the materials.
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Preparation of low cost Ti-6Al-4V alloy by gelcasting Qing Ye, Junjie Haoa, Zhimeng Guo, Minchao Ru New Materials Technology Research Institute, University of Science and Technology Beijing, Beijing 100083, China ahaojunjie@ustb.edu.cn Keywords: Gelcasting, Powder metallurgy, Ti-6Al-4V.
Acknowledgements This work was supported by State Key Lab of Advanced Metals and Materials(2010Z-09) and Public Foundation of Beijing Key Lab of Advanced Powder Metallurgy and Particulate Materials(USTB).
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Journal of Materials Research and Technology. 9 (2020) 10091-10096
Materials Research Express. 7 (2020) 056506
Materials Characterization. 62 (2011) 925-930
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In this methodology, the FRP reinforcement is installed into slits cut into the concrete cover using cement mortar or epoxy as bonding materials.
Its use has several advantages over the externally bonded (EB) FRP technique: protection, improved bond, better aesthetics, and surface preparation, as described elsewhere[1,2].Despite having high tensile strength, most fiber-reinforced polymer (FRP) materials suffer from relatively low modulus of elasticity compared with steel[3]~[5].
The specific parameters are shown in figure 1, A variety of mechanical properties of materials measured in Table 1 ~ 2.
Study of strengthening reinforced concrete beam using prestressed carbon fiber sheet[J] Journal of Building Structures. 2003,24(5)：24-30 [4] Vecchio F J ,Collins M P.
The modified compression – filed theory for reinforced concrete elements subjected to shear[J ] .ACI Structural Journal , 1986 , 83 : 386 - 394

Therefore, the feature of photocatalyst provides important using value to improve textile functionality and to develop new materials [5-7].
Experimental Materials.
Yue: Journal of Shazhou Polytechnical Institute of Technology, Vol.4 (2010), p19
Li: Shanghai Textile Science & Technology, Vol.33 (2005), p1
Xie: Journal of Textile Research, Vol.2 (2009), p15

Wool which consists of keratin is one type of natural composite materials.
Experimental Materials Wool fabrics were obtained from Hangzhou Fusi Industrial and Trading Co., Ltd.
Acknowledgements This work was financially supported by National Key Technology R&D Program (2013BAH58F01-02), Special Funds from the Administration of Cultural Heritage of Zhejiang Province (2013211) and The Young Researchers Foundation of Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University (2013QN03).
Taglialatela: Journal of Archaeological Science Vol. 27 (2000), p. 745 [2] Jianzhou Yang, Lijuan Sun: Archaeology and Cultural Relics In Chinese, issue 5 (2003), p.91-94.
(In Chinese) [3] Karin Margarita Frei, Irene Skals, Margarita Gleba, Henriette Lyngstrøm: Journal of Archaeological Science Vol.36 (2009), p. 1965 [4] Qiang Wang, Xuerong Fan, Yingjun Hu, Jiugang Yuan, Li Cui and Ping Wang: Bioprocess and Biosystems Engineering, Vol. 32 (2008), p.633