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INTRODUCTION Nonlinear behaviors of the mechanical systems described by fractional calculus frequently appear in the literature in recent years thanks to the development of fractional calculus.[1,2,3,4,5] the damping proprieties of some viscoelastic advanced polymeric materials can be accurately modeled by fractional calculus model.[6,7,8,9,10] These studies remind us that the nonlinear influence on both constitutive relationship of materials and mechanical behavior of structures cannot be ignored.
On the other hand ,as one of the important structures the dynamics of arches continue to attract researchers to know more about dynamic behavior of arches. the geometrical and material nonlinearity of arches can not be neglected in many  aspects  such as the vibration with large displacement or large strain Especially, the introduction of the damping of some viscoelastic advanced polymeric materials to the arches requires us to understand the dynamic characteristics of arches accurately.
The material parameter describes in fact the damping characteristics of polymeric materials.
[8]Deng Y.S., Li Y.H., Gao Q., 2007, Analysis on nonlinear vibration of shallow arch structure[J], J. of Chongqing Institute of Technology(Natural Science Edition), 10: 42-46(In Chinese)
[10]Wei D.M., 2004, Nonlinear theory of arches and its applications[M], Beijing:Science Press(In Chinese).

Journal of Intelligent Material Systems and Structures, 2000,10(11):5-13
Analysis on the working principle of MRF transmission device[J], Journal of Chongqing University(Natural Science Edition ), 2007, 30(11): 19-22 (in Chinese)
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Key Engineering Materials, 2004,274/276:969-974
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Journal of Hazardous Materials 178 (2010) 455–461 [14] Qiu Yuping, Cheng haiyan, Xu Chao, et al.
Journal of Hazardous Materials 178 (2010) 455–461

Chen Institute of Physics, Chinese Academy of Sciences, Beijing 100080, P.R.
China Keywords: Laser epitaxy, Dielectric materials, Perovskites Abstract.
Ackonwledgements The work was supported by the "Hundreds Talents Project" of the Chinese Academy of Sciences and the National Natural Science Foundation of China.
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Choy: Materials Chemistry and Physics Vol. 75 (2002), pp. 220

It is also made as raw material in the production of soap and wax.
Ando, Single-Wall and Multi-Wall Carbon Nanotubes from Camphor--a Botanical Hydrocarbon, Diamond and Related Materials 12 (2003) 1845-1850
Umeno, Carbon Nanotubes by Spray Pyrolysis of Turpentine Oil at Different Temperatures and Their Studies, Microporous and Mesoporous Materials 96 (2006) 184-190
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Misra, Ftir Studies of Nitrogen Doped Carbon Nanotubes, Diamond and Related Materials 15 (2006) 385-388

Among them, Peripheral features information including the shelter of the surrounding relief materials, Such as medicine, food, water and generator and important features of the distribution and radiation range, such as hospital, supermarket, etc.; emergency shelter is the fastest route to the shelter the optimal route, victims to an emergency evacuation and relief supplies to provide decision-making basis for fast.
Supply of Relief Materials Management.
Using GIS technology and database technology, to realize the information management of disaster relief materials, including to material classification, quantity, manufacturers, use period, the information such as the loading and unloading of the database entry, organization and query; at the same time, it can check the corresponding materials in saturated and early warning and emergency allocation shortage.
For earthquake emergency shelter of construction, as the people's livelihood engineering important content, need to human, material and financial resources and the support of all departments at all levels of coordination, only leadership attention, can the concrete construction work to implement action, coordination, clear responsibility, do all departments in the effective interaction to solve practical problems encountered in the construction.
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Table 1 Cross-section and material description No.
Conclusions In this paper, a section model of RC beam with nonlinear materials is proposed and the transverse deformation can also be taken into account after diagonal cracking.
Acknowledgements This work is part of the projects financially supported by the Ministry of Science and Technology (MST) of China (Grant No. 2007BAF23B02-06), Beijing Natural Science Foundation (BNSF) (Grant No.809202) and National Natural Science Foundation of China (NSFC) (Grant No. 50978010).
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