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Concrete in this system is considered as linear elastic material, while rubber bearing is regarded as incompressible nonlinear elastic material.
Fig.2 Max principal stress of right shearkey Fig.3 Max principal stress of left shearkey (2) Because of the nonlinearity of material, the rubber bearing appears large deformation along with the inner motion of each part which forms the whole collision system., It can be described in some ways by relative displacement of reference point A and B which is a pair of angular points of rubber bearing and the position is shown in Fig.4.
References [1] Zhao G.H, Liu J.X: Technology for Earthquake Disaster Prevention Vol. 3 (2008), p. 365 [2] Liu J.X, Zhao G.H: Architecture and Civil Engineering Vol. 26 (2009), p. 92 [3] Wang J.W, Li J.Z and Fan L.C: Journal of Highway and Transportation Research and Development Vol. 24 (2007), p. 72 [4] E.Maragakis, B.Douglas and S.Vrontinos: Classical Formulation of the Impact between Bridge Deck and Abutments during Strong Earthquake (American Society of Civil Engineers，Canada 1990) [5] R.Jankowski, K.Wilde and Y.Fujno: Earthquake Engineering and Structural Dynamics Vol. 27 (1998), p.487 [6] A.Ruangrassamee, K.
Kawashima: Earthquake Engineering and Structural Dynamics Vol. 30 (2001), p.1511 [7] Nue L.Y, Fan L.C and Fan L.C: China Journal of Highway and Transport Vol. 19 (2006), p. 49 [8] Wu X.T, Zhou Z.X and Zeng F.J: Journal of ChongQing JiaoTong Unversity(Natural Science) Vol.27 (2008), p. 1 [9] Li L, Ye Z.X and Wu J: Joumal of Highway and Transportation Research and Development Vol.26 (2008), p. 100 [10] He X.L and Li E.X: Southwest Highway Vol.4 (2008), p. 108

Study on Modular Design of Trimming Die Structure for Automotive Panels Yilin Wang1, a, Gengyun Wang1,b 1State Key Laboratory of Material Processing and Die & Mold Technology, Huazhong University of Science & Technology, Wuhan, Hubei 430074, China awangyilin@mail.hust.edu.cn, bwgy@mail.hust.edu.cn Keywords: Modular design; Trimming dies; Automotive panels; Parametric design Abstract.
Automobile panels have the characteristics of thinner sheet metal materials, complex surface shapes, bigger dimensional structure, higher surface quality requirements, etc.
The International Journal of Advanced Manufacturing Technology, Vol.36 (2008), p. 671–680
The International Journal of Advanced Manufacturing Technology, Vol. 23 (2008), p.1670–1677
The International Journal of Advanced Manufacturing Technology, Vol.55 (2011), p.83–93

Editorial Department of Journal of Northeastern University, Northeastern University, Shenyang, China.
Then the rigid wall was established material property was defined for different bodywork structures [8].
Gong: Journal of Changsha Traffic College, Vol. 5, (1999), p.77-81 [4] K.
Zhang: Automobile materials (Scientific Press, 2009) [9] L.X.
Wen: Journal of Applied Biomechanics, vol. 25 (2009), pp. 64-72.

What relation between the frequency, strength of infrasound wave and the constitutive relation, load form of materials?
Petroleum Science 4 (2000),P.8 [2] Su Fang and Weitian.
Journal of Low Frequency Noise, Vibration and Active Control 20 (2001),P.1 [3] Guo Fabin and Dong Lifeng.
Journal of Beijing University of Technology 32(2006),p.573 [8] Chen Jixiang, Wang Bo and Lu Weimin.
Journal of ShanXi Institute of Technology 19(2003),p.49 [9] Zang Chunxi, Guo Yanyi and Bai Chunhua.

Development of 4UMS-2700 Cassava Harvester Hui Huang1, a, Zhende Cui1,b , Zhong Xue1,c , Yuan Zhang1,d 1 Agro-machinery Research Institute of Chinese Academic of Tropical Agricultural Sciences, Zhanjiang, Guangdong, 524091, China a603709530@qq.com, bcuizhende@126.com, c xxyyxz006@163.com, dzhang198414@126.com Keywords: Cassava harvester,Overall structure,Working principle,Performance test Abstract.
Introduction Cassava is one of the seven major crops with an annual output of over one hundred million tons, is the main source of heat energy among the daily foods in many tropical and subtropical regions and countries, and is also one of the most important materials which can bring us renewable energy.
In order to extend both penetrating teeth’s and cutters’ wear-resistance and life, their edges are welded with tungsten carbide – a kind of wear-resistant material.
Acknowledgments This article supported by Special Foundation for Central-level Non-profit Research Institution Conducted Research Program (Project Number: 1630032012041) References [1] Bosheng Zeng, Caixue Ye, Hua Lu: Journal of Guangxi Agricultural Mechanization, Vol. (6)(2011), p. 21（In Chinese） [2] Wang Yang, Ganwei Cai, Jian Yang, Yiqi Huang: Journal of Xinjiang Agricultural Engineering,Vol. 27(11)(2011), p. 95（In Chinese） [3] Zhong Xue, Hui Huang, Ming Li, et a1.
Journal of Agricultural Mechanization Research, Vol. 32(8)(2010), p. 79（In Chinese）

Table 1 Parameters of experiments Speed of cutting movement 30m/min Speed of feed movement 0.06mm/r Material of abrasive Diamond Polishing tool Wool pad Conclusions When CNC machine tools polish the aspheric surfaces with a feed movement system of and θ, the displacement errors from centering operations and 3-coordinate interpolation operations make the programming trajectory of feed movement different from the required one, and it results in pose error.
Acknowledgement All the research works are supported by the Natural Science Foundation of Ningbo of China under granted No. 2010A610132 and 2010A610133.
Leininger: International Journal of Robotics Research, Vol. 9 (1990) No.3, pp. 63~67 [3] F.
Zhu: Journal of Materials Processing Technology, Vol. 129 (2002) No.1-3 [7] F.J.
Yin, et al: International Journal of Machine Tools and Manufacture, Vol. 50 (2010) No. 5, pp. 480-486 [8] J.M.

Introduction Concrete is a conventional construction material for the long-term period.
Acknowledgements This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Korean Ministry of Education (NRF-, 2015R1D1A1A09057625) and this research was supported by a grant (18CTAP-C129756-02) from Technology Advancement Research Program (TARP) Program funded by Ministry of Land, Infrastructure and Transport of Korean government.
Mårtensson: International Journal of Concrete Structures and Materials Vol. 9, No. 3 (2015), pp. 295–306
Yang: Journal of the Korea Institute for Structural Maintenance and Inspection Vol. 20, No. 4 (2016), pp. 59-67
Yang: Journal of the Korea Institute for Structural Maintenance and Inspection Vol. 22, No. 2 (2018), pp. 16-25.

Electropolishing of coronary stents Zsuzsa Edina Gellér 1,a Katalin Albrecht 2,b and János Dobránszky 3,c 1) Department of Materials Science and Engineering, BME Goldmann ter 3, Budapest, 1111 Hungary 2) Minvasive Ltd.
Material removal (weight loss and strut width change) in the process of both pickling and electropolishing was investigated.
Degawa et al.: American Heart Journal, Vol. 138 (1999:5/1) p. 962
Füle, in: Carbon: The Future Material for Advanced Technology Applications, edited by G.
Thèse PhD, Faculté des sciences et génie, Université Laval, Québec, Canada (2005)

Liu: Chinese Journal of Rock Mechanics and Engineering.
Wan: Chinese Journal of Rock Mechanics and Engineering.
Technol (Natural Science Edition).
Gao: Chinese Journal of Geotechnical Engineering, Vol.27(2005), p.1273.
Xu: Chinese Journal of Geotechnical Engineering, Vol.28(2006), p.796 (In Chinese) [15] NAPIER J A L, MALAN D F: International Journal of Rock Mechanics and Mining Sciences, Vol. 34(1997), p.1075

In order to reduce the noise transfer function, damping materials were applied to the sensitive thin plates, the modification effect proved to be content in the real working condition.
In order to simulate the actual sound field more accurately, all the plates installed with sound-absorbing material has been assign sound-absorbing properties of the panel.
In order to reduce the noise transfer function, it is reasonable to add damping material to these plates which have a severe vibration as Fig.4 indicates.
Acknowledgement This research was financially supported by the Science Department of Jilin Province and technically supported by Faw Technology Center in China.
[5] Erdem Yuksel, Gulsen Kamci, Ipek Basdogan, Vibro-Acoustic Design Optimization Study to Improve the Sound Pressure Level Inside the Passenger Cabin, Journal of Vibration and Acoustics，134(2012)061017-1