Search results

Preparation System Design of Filling Material with Coal Gangue as Coarse Aggregate Youxia Sun1, a, Dawei Ren2,b 1Key Laboratory of Mining Disaster Prevention and Control of Education Ministry, Shandong University of Science and Technology, Qingdao, Shandong, 266510, China 2College of Natural Resources and Environmental Engineering, Shandong University of Science and Technology, Qingdao, Shandong, 266510, China asyxljl@sohu.com, bdawei_ren_2000@163.com Keywords: coal gangue, green mining, preparation system, filling material Abstract.
Thus far there are mainly four kinds of filling materials, which are high water materials, solid materials, paste filling materials and paste-like filling materials.
However, the preparation systems of the three filling materials are located on the ground, which must cause the secondary pollution by coal gangue processing and increase the transport cost by lifting the coal gangue out of the shaft and carrying the filling materials to underground.
The performances of the two materials developed meet the requirements of gob-side entry retaining and backfilling.
References [1] Xiexing Miao and Minggao Qian: Journal of Mining & Safety Engineering Vol.26 (2009), p.1 in Chinese [2] Nailiang Li andGuangming Feng: Journal of Coal Mining Technology Vol.15 (2010), p.50 in Chinese [3] Xiexing Miao and Jixiong Zhang: Journal of China Coal Society Vol.35 (2010), p.1 in Chinese [4] Minggao Qian and Jialin Xu: Journal of China University of Mining & Technology Vol.32 (2003), p.343 in Chinese [5] Yucheng Huang and Henghu Sun: Journal of Coal Science and Technology Vol.31 (2003), p.51 in Chinese

From the traditional rough test to support materials and materials used in all aspects of science and technology, modern, scientific program, at present, there are mutual dependencies between the progress of scientific knowledge and the development of test methods.
Acoustic emission analysis of the flexural and tensile properties of 3-D braided composite materials[J].Journal of Textile Research.2007,28(4):52-55
Feature of acoustic emission and failure analysis for three-dimensional braided composite material under compressive load[J].Journal of Textile Research.2006,27(2):20-24
Research on measure of composite material preform braiding angle [J].Journal of Textile Research.2004,25(3):42-44 [8] T.W.
Ko, Textile structural composites, Composite Materials Series, Elsevier Science Publishers B.V., Amsterdam, 1989

Nano ceramic materials with high specific surface materials contain two kinds of hollow nanosphere ceramic materials and porous ceramic materials from the perspective of structure.
This paper mainly introduces the characteristics of nano ceramic materials with high specific surface, and their applications of hollow nanosphere ceramic materials and porous ceramic materials in environmental protection.
In these circumstances, a kind of new materials, hollow nano sphere ceramic materials, which bring hope to human undoubtedly.
Park and J Kim: Journal of Power Sources, vol. 194(2009), p.574
[10]Adler J: International Journal of Applied Ceramic Technology, vol. 2(2005), p.429

Study on Virtual Material Method for Dynamic Features Analysis of Crank Connecting Rod Mechanism Shen Li1, a, Yunguang Bai1,b, Jianxiao Liu2,c, Shusen Zhao3,d and Huiqun Yuan4,e 1School of mechanical Engineering & Automation, Northeastern University, Shenyang, China 2China South Industries Group Corporation guided Air Ammuition Research and Development Center, Changsha, China 3Institute of Semiconductors, Chinese Academy of Sciences, Beijing, China 4College of sciences, Northeastern University, Shenyang, China aemail: shli@mail.neu.edu.cn, bemail: byg031400@126.com, cemail: neu_ljx0731@163.com, demail: zhaoshusen@semi.ac.cn, eemail: yuan_hq@163.com Key words: Anisotropic virtual material method; Virtual material method; ANSYS; Dynamic features Abstract.
Assuming the virtual materials meet linear elastic material relationship in all directions in order to reduce the calculation parameters.
Journal of North China Institute of Technology, 2005, 26 (2): 107-110
Journal of Materials Processing Technology, 2011, 211(3): 467-474
Journal of Chongqing University of Science and Technology (Natural Sciences Edition), 2010, 12(3): 164-167.

Often, multifunctional materials are also called all-purpose materials due to their versatile use.
Sasmal, Evaluation of mechanical characteristics of nano modified epoxy basedpolymers using molecular dynamics, Computational materials science, 96 (2015) 146-158
Aytekin, Modification of bitumen-based roof covering material by glass reinforced polyester recyclate, Journal of material cycles and waste management, 17 (2015) 583-589
Pilon, Thermal conductivity of cementitious composites containing microencapsulated phase change materials, International journal of heat and mass transfer, 104 (2017) 71-82
Balachandra, Polymer nanocomposites processed via self-assembly through introduction of nanoparticles, nanosheets, and nanofibers, Journal of materials science, 52 (4) (2017)

The Effect of Explosive Material on the Formation of Explosively Formed Penetrator Qinshu Miao1,2, a, Xiaoming Wang1,b, Wenbin Li1,c, Weibing Li1, d, Yu Zheng1,e 1ZNDY of Ministerial Key Laboratory Nanjing University of Science and Technology, Nanjing 210094, China 2 Unit 63961 of PLA, Beijing 100012, China amqslxf@163.com, bwangxm@mail.njust.edu.cn, cacnet@mail.njust.edu.cn, dnjustlwb@163.com, ezhengyu9989@yahoo.com.cn Key words: Explosive Material; Explosively Formed Penetrator(EFP); Material Character; Numerical Simulation Abstract: In order to research the effect of explosive material on the formation of EFP, this paper studies the effect of five different explosive materials, PETN, SEP, TNT, PE4BOOSTER and 8701, on forming EFP, using ANSYS/LS-DYNA simulation software.
Five explosive materials form typical explosively formed penetrator, from PETN to 8701, the length of penetrator head long rod gradually become longer apparently, velocity and length to diameter ratio are increased. 
The EFP formed influence factors are density, detonation velocity, detonation pressure, explosion heat of explosive materials, the following are the analysis of each EFP formed influence factor of different explosive materials, the influence law of EFP formed that depend on explosives material parameters which obtain explosive density, detonation velocity and detonation pressure is researched.
From the analysis that the EFP formed influence on detonation pressure of different explosive materials, the fitting curve that EFP velocity and length to diameter ratio with detonation pressure is obtained.
References [1] Jiang Houman, Zhang Ruoqi, Zhang Shouqi: Journal of Ballistics Vol. 10(1998), p. 25-28 [2] Wu Jun, Liu Jingbo, Du Yixin: International Journal of Impact Engineering Vol. 34(2007), p. 1147-1162 [3] Li Weibing, Wang Xiaoming, Li Wenbin: International Journal of Impact Engineering Vol. 37(2010), p. 414-424 [4] Song Meili, Wang Xiaoming, Li Wenbin, Zheng Yu: INITL T0RS&PYROTECHNICS (2009), p. 16-19 [5] Li Weibing, Wang Xiaoming, Li Wenbin: Journal of Ballistics Vol. 21(2009), p. 19-23 [6] Lin Jiajian: University Of Science And Tecnology Of China (2009)

Hoek-Brown rock mass material includes homogeneous isotropic rock mass material and severely weathered rock mass material[5]. severely weathered rock mass material and fracture zone are considered as isotropic material because rock mass material in this zone is broken and there is no predominant joint.
References [1] Panthi K K, Nilsen B.: submitted to International Journal of Rock Mechanics and Mining Sciences (2007) [2] Hoek E, Marinos P.: submitted to Tunnels and Tunnelling international (2000)
[3] Carranza-Torres C, Fairhurst C.: submitted to International Journal of Rock Mechanics and Mining Sciences (1999)
[4] Hoek E.: submitted to Journal of Geotechnical and Geoenvironmental Engineering (2001)
[5] Carranza-Torres C, Fairhurst C.: submitted to International Journal of Rock Mechanics and Mining Sciences (1999)

Wang: Journal of Experimental Mechanics Vol.18 (2003), p. 440 (In Chinese)
Stephansson: International Journal of Rock Mechanics and Mining Sciences Vol.40 (2003), p. 355 [3]R.
Bruhns: Mechanics of Materials Vol.39 (2007), p. 291 [4]D.L.
Han: Journal of Xi'an University of Technology Vol.18 (2002), p. 22 (In Chinese)
You: Journal of Geomechanics Vol.8 (2002), p. 179 (In Chinese)

Multi-scale model support the design of new materials.
The proposed model predicts the aging elasticity of cement-based materials.
Multiscale modeling and simulation of composite materials and structures. 2007, Springer Science Business Media, LLC: New York
"Multi-scale digital-image-based modelling of cement-based materials."
[27] Lackner, R., "Multiscale prediction of viscoelastic properties of asphalt concrete," Journal of Materials in Civil Engineering, Vol. 21, pp.771-780, 2009.

Liu: submitted to Journal of Advanced Materials Research. 239-242 (2011) 3310-3313
Lu: submitted to Journal of Advanced Materials Research. 250-253 (2011) 405-408
Chen: submitted to Journal of Key Engineering Materials. 629-630 (2015) 494-503
Othman: submitted to Journal of Applied Mechanics and Materials. 389 (2013) 36-39
Achal: submitted to Journal of Advanced Materials Research. 1090 (2015) 96-100