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The casing, cement and formation are continuous homogeneous isotropic elastic material.
The Poisson’s ratio of the material of cement is 0.3, the in-situ stress 60MPa, the casing internal pressure 20MPa and Young’s modulus of material of cement 5GPa-50GPa, the influences of Young’s modulus of material of cement on the casing and cement load is investigated.
Fig.3 Loads of casing and cement with Fig.4 Loads of casing and cement with different Young’s modulus of material of cement different Poisson's ratio material of of cement The affects of Poisson’s ratio of material of cement on the loads of casing and cement.
The bigger the load of cement, the bigger Poisson’s ratio of material of cement.
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CInstitute of clinical medical science, China-Japan friendship hospital, Beijing 100029, China.
Corresponding author: Xiaowen Wang; Email: wxw3001@126.com; Address: Rm B117, Medical School Building Tsinghua University, Haidian district, Beijing; Fax: 86-10-62796784; Telephone Number: 86-10-62796784 Keywords: Polymethylmethacrylate; Nanoparticles; Ferroelectrics; Magnetic materials; Abstract.
SM, Buggy, M, Bone cements and fillers: A review, Journal of Materials Science-Materials in Medicine. (11)2003:923-938. ].
Materials and Methods Synthesis of Fe3O4 particles.
PMMA powders and Methacrylate (MMA) monomer were supplied by Tianjin institute of synthesis materials industry, China, and the average particle size of the PMMA was measured by a scanning electron microscope (SEM: FEI, QUANTA 200, Brookhaven Instrument Corporation.

Graphene is a material with a very high intrinsic strength.
High surface hardness materials are necessary in many applications such as cam or ring gears, bearings or shafts, turbine applications, and automotive components [2].
The surface hardness was measured using a Micro Materials nanoindentation tester under load control to 200 mN.
Howe, Characterization of Phases Formed in the Iron Carbide Process by X-Ray Diffraction, Mossbauer, X-Ray Photoelectron Spectroscopy, and Raman Spectroscopy Analyses, Metallurgical and materials transactions B, 32B (2001) 7
Holm, Elimination of oxide films on ferrous materials by heating in vacuum, Part of Journal of Research of the National Bureau of Standards, 28 (1942) 11.

Badawi, Development of the weaving machine and 3D woven spacer fabric structures for lightweight composite materials, PhD thesis, TU Dresden, 2007
Journal of Intelligent Material Systems and Structures, 22 (2011) 8, 739  755 [7] B.S.
Journal of Intelligent Material Systems and Structures, 22 (2011) 11, 1177  1187 [8] M.
Materials Science and Engineering: R: Reports, 51 (2006) 13, 1  35 [12] P.
In: Proceedings of the 15th European Conference on Composite Materials: ECCM-15, Venice, 2012

It has considered about intermediate principal stress and applies to all kinds of materials.
According to the material mechanics, lateral stress of the core concrete provided by steel tube is:
Materials access to higher mechanical properties, the bearing capacity of member can increase with it.
Acknowledgements This work reported herein is supported by the Natural Science Foundation of China (41202191), Shaanxi Provincial Natural Science Foundation (2011JM7002) and the Special Research Foundation of Higher School Doctoral Program (20110205130001).
Southeast University (2002), in Chinese [5] Maohong Yu: Unified strength theory and applications (Springer-Verlag, Berlin 2004) [6] Junhai Zhao: Unified Strength Theory and Its Engineering Application (Science Press, Beijing 2003), in Chinese [7] Jun Zhou, Wenjuan Lou, Junhua Sun: Engineering Mechanics Vol. 24(2007), p. 128-133(155), in Chinese [8] Junhai Zhao, Yan Li, Wenbiao Liang, et al: China Journal of Highway and Transport Vol. 25(2012), p. 58-66, in Chinese [9] Zhao Liu, Junhai Zhao, Juan Wang, et al: Journal of Architecture and Civil Engineering Vol. 28(2011), p. 92-96, in Chinese [10]Haibing Xiao, Junhai Zhao, Shanshan Sun, et al: Journal of Architecture and Civil Engineering Vol. 27(2010), p. 83-88, in Chinese [11]Zhaoqiang Zhang, Junhai Zhao, Yong Yao: Journal of Southwest University of Science and Technology Vol. 23(2008), p. 8-13, in Chinese

Norazian : Journal of Applied Mechanics and Materials Vol. 110 – 116 (2011), p. 734 – 739
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Kightly: Journal of Material Science Vol. 19 (1984) p. 3355 – 3359
Zarina, A.R Rafiza, in Advanced Materials Research Vols. 341-342 (2011) p. 189-193

Díaz: Advances in Materials Science and Engineering Vol. 28 (2018), p. 1
Journal of Composite Materials Vol. 51 (1) (2017), p. 81
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With the development of computer technology and material science, the applications of 3D reconstruction and rapid prototyping manufacturing in the medical field become a hot field of research.
Model and support materials are ABS, manufacture steps are as follows: Slice an STL Model to Create Part Curves.
To ensure surface quality of model, reduce the materials and manufacture time, CMB file was generated with multiple contour part fill style, sparse-double dense part interior style and enhanced surface style.
Adding model and support materials to RP machine, setting working place and other parameters, started the model manufacturing.
Sun: Journal of Clinical Rehabilitative Tissue Engineering Research.