Search results

Direct dynamic analysis of reinforced concrete frame buildings taking into account the nonlinear and plastic properties of materials by the finite element method is connected with the solution of a system of solving equations of very high order.
Such a calculation of the spatial framework reinforced concrete structures taking into account the nonlinear work and the plastic properties of materials is a difficult task.
Fig. 1: Frame loading scheme Materials and Methods The mass of the construction is represented as a system of two particles (i.e. concentrated masses, ) located at the connections of the frame rodes.
[8] Fujii K., Nakano Y., Sanada Y., “Simplified nonlinear analysis procedure for single-story asymmetric buildings”, Journal of Japan Association for Earthquake Engineering, Vol. 4, № 2, (2004)
Technical Science Series, №1 (106), (2017), pp. 43−48.

Layer and uniformly spray on soil material prepared.
Acknowledgement This paper is supported by National Natural Science Foundation of China（50868009, 51168022, 51269006） References: [1]JIE S J.2008.
Journal of Geotechnical Engineering33(7):1146-1152
[3]ZHAO Y Z.1988.Experimental study on the corrosion effect of Strongly acidic waste water of some factory on laterite foundation[J].Site Investigation Science and Technology(2):35-38
Investigation Science and Technology(6):38-41

But the sound insulation performance is the lightweight composite paper honeycomb core wallboard lightweight composite paper honeycomb core wallboard short board, as people's life quality is improving, needing a high quality acoustics environment , mass using of lightweight wall materials can not contented people's acoustic environment needs.
Figure 1 Ichnography of reverberation room Figure 2 elevation of reverberation room The specification of paper cellular wall materials In this test, eight specifications of lightweight composite paper honeycomb core wallboards had been tested, size of all the specimens are 1800mm*1500mm, and the major differences are have different number of plies of paper honeycomb core and wallboard material using different thickness and material quality.
Therefore, cracks should be avoid in the process of test, prevent appears gaps between paper cellular wall materials and original structure, avoid cause large inaccuracy in the test.
New Building Materials, 2006 (8):46~49
[7] HuangXueHui,ShangFuLiang.Development of the Sound Absorption Material Used for Noise Reduction in Highway Tunnel [J] Journal of Wuhan University of Technology,2003,25 (4): 27~30.

Journal of the American Oil Chemists' Society (1998), 199-212
Journal of Immunological Methods. (2002), 26, 49-72
Life Sciences. (2005), 1953-1964
Journal of Medicinal Plants Research. (2009) 120-131
Trends in Plant Science, (1997), 2, 152-159.

One of the topical areas of utilization of man-made products is their use in the production of building materials.
Materials and Methods Materials To obtain the studied compositions, gypsum of “Gypsopolymer” company (Perm), G-4 grade, corresponding to GOST 125-79, was used as a binder.
Before the research, the materials were subjected to grinding and sieving to obtain a fine powder.
-L., Physical and mechanical properties of fly ash and slag geopolymer concrete containing different types of micro-encapsulated phase change materials, Construction and Building Materials 173 (2018), pp. 28–39
[4] Ferronskaya, A.V., Development of gypsum binder theory and practice, Construction Materials 2 (2000), pp. 26-28

Because the materials for the facesheet limited to low dielectric systems that transmit RF signals with minimum loss have lower strength and modulus than conventional laminated composite materials, its material selection is very important in design process.
Electrical and mechanical properties of materials composed of SAS are tabulated in Table 1.
Lockyer, et al.: SPIE Smart Structures and Materials: Smart Materials, Vol. 2189(1994), p. 172
Lockyer, et al.: SPIE Smart Structures and Materials: Smart Electronics and MEMS, Vol. 2189(1997), p. 182
Park: Journal of Composite Materials, Vol. 37(2003), p. 351

Introduction The study of the optical properties of polymers and experimental measurements is one of the scientific endeavors and research in the history of materials science.
Polymers science is one of the most important branches of materials science, which includes (metals and their various alloys, ceramic and glass materials, polymeric materials, semiconductor materials, and superconducting materials), as the composition of giant molecules of the polymer was not known specifically until after the year 1920 [5].Polymers are generally used in manufacturing and engineering [6][7].
Ganeev, Nonlinear Optical Properties of Materials.
Anderson, “Materials science,” Wiley Encycl.
Sharma, “Preparation, structural and dielectric properties of solution grown polyvinyl alcohol (PVA) film,” in IOP Conference Series: Materials Science and Engineering, 2017, vol. 225, no. 1, p. 12044

These materials are known as the nano-composites.
Electromagnetic processing of materials applies electromagnetic field into materials fabrication and processing to control materials structure and properties.
Sajjadi, Materials and Design 28 (7) (2007) 2113–2120
Li, Journal of Manufacturing Science and Engineering, Vol.129,(2007).497-501 [26] Y.
Li, Materials Science and Engineering A 380 (2004) 378–383 [27] K.

Experimental Materials Lignosulfonate, obtained from Huawei Youbang Chemical Ltd., China, was derived from by-products of sulfite pulping.
Acknowledgements This work was financially supported by the National Natural Science Found of China (20876064, 20925622), National Basic Research Program of China (2012CB215302), the Fundamental Research Funds for the Central Universities (2011ZP0012) and the Guangdong Provincial Natural Science Fund (9151064101000082).
Meier: Journal of Analytical and Applied Pyrolysis.
Carnero Ruiz: Journal of Colloid and Interface Science.

The experiment device choose strong electromagnetic field simulation and environment protection technology defense science, technology and key laboratory auspicious tile level ultra-wideband electromagnetic pulse radiation system, its Gaussian pulse signal in a single week, time domain and frequency domain expression were [4]
Common mode current amplitude with the increase of the field radiation (irradiation distance of the reduction of) and increase, this and the results of consistent trend; And differential mode voltage in the simulation calculation, as the control of the wire materials, line diameter, the length of the same sex, and in close by spacing is small, so the calculation results of 0 V.
High-power ultra wideband electromagnetic pulse source [J].IEEE Trans on Plasma Science, 2003, 17(3): 1458-1461
Journal of System Simulation, 2004, 16(2): 2872
Journal of Ordnance Engineering College, 2008, 20(2): 36-38.