Search results

The causes of blade failure have many aspects, such as defects of blade material, lack of static strength and high cycle fatigue.
Tab. 2 Parameters of the impeller material name density elasticity modulus poisson ratio yield strength HF-1 2.66g/cm3 69E9 0.31 180MPa The loads applied on the axial blades consist of centrifugal force, the acceleration of gravity load and aerodynamics load.
Acknowledgements This work was financially supported by Natural Science Foundation of Hebei Province(E2012502016) and The Fundamental Research Funds for the Central Universities(12QN39).
References [1] J N Reddy: Journal of Applied Mechanics, Vol. 51 (1984) No. 4, p. 745 [2] T G KIM, H C LEE: Engineering Failure Analysis, Vol. 17 (2003) N0. 6, p. 307 [3] EJAZ N, SALAM I, A TAUQIR: Engineering Failure Analysis, Vol. 14 (2007) No. 7, p. 1313 [4] Qiudong He, Shuguang Gong, Tao Ding: Journal of Mechanical Engineering, Vol. 47 (2011) No. 24, p. 122 (In Chinese) [5] Jun Mao, Liguo Yang, Yanhong Xi: Journal of Mechanical Engineering, Vol. 45 (2009) No. 11, p. 133 (In Chinese) [6] Jun Mao, Lin Xue, Dan Wang: China Safety Science Journal, Vol. 14 (2003) No. 5, p. 75 (In Chinese) [7] Sanwei Gong, Liyun Ren, Huoxing Liu: Themal Turbine, Vol. 36 (2007) No. 3, p. 153 (In Chinese)

Dynamic Behavior and Stability of Prestressed Arch-Supported Reticulate Shell Structure Jiantao Dong1,a ,Jun Zhao2,b, Kai Shi3,c 1 School of Science, Chang'an University, Xi'an, 710064,China 2,3 State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences, Wuhan ,Hubei 430071, China a djtchd@163.com, b abc_438@163.com, c shikaiwp@yahoo.cn Keywords: prestressed, arch-supported reticulate shell, dynamic behavior, stability Abstract.As a new long-span space system, the prestressed arch-supported reticulate shell structure performs the advantages of reticulated shell and prestressed structure.
The Modal Of The Non -Prestressed Arch Supported Single Double Reticulated Shell For The First Four Order In order to explain the influence degree of the change of stiffness to the dynamic performance, we will use the model of static analysis in the case of the same span of the prestressed single layer reticulated shell of the invariant of element type and material properties.
Delft University Press，1995 [3] K J Bathe．Prentice-Hall Inc，1982 [4] Swamy R.N., Mukopadhyaya P., Lynsdale C.J. 19,77(1999) [5] Norris T., Saadatmanesh H., Journal of Structural Engineering,123,903(1997) [6] Laura De Lorenzis, Journal of Compsites for Construction, 5,114(2001) [7] Kurtz S., Balaguru P.
Journal of Structural Engnineering,27,35(2001) [8] Konno,Katsuyuki;Sato．Yasuhiko；Kakuta.Yoshio；Ohira．Msaji．
Journal of Structure Engineering,2004

A representative of this group of materials is the Litecor sandwich composite produced by Thyssenkrupp.
Materials and Methods As part of the research, material from the MPCs group, Litecor, was formed.
Key Engineering Materials, vol. 504-506 (2012) 815-820
Materials 14, 1176, (2021) 1-19
Advances in Materials Science, Vol. 20, No. 4(66), December (2020) 5-15

Renewable materials that can potentially enough to manufacture ethanol is one sweet potato.
Groups of tubers such as cassava, sweet potato, ganyong and taro has been investigated as ethanol production materials [1,5,6,7,8,9], including crops such as sweet shorgum [10].
Materials and Methods Materials used in this study were the bulbs of sweet potatoes which was taken from Bogor plantation, West Java.
Other materials used were HCl, aquadest, PDA and PDB medium, alcohol, Nelson Somogyi reagents, reagents Anthrone, dextrose, (NH4)2SO4, Na2CO3, pepton, gauze and filter paper.
Science Unhalu Kendari, Journal of Basic Science Vol. 5, No.1 (2004), p. 16-20

(2) Slip material Barite powder, quartz sand, gravel and water particles can be configured to a variety of materials mass percentage ratio and mechanical parameters of the test material are shown in Table 1,2.
Tab.1 Mixture ratios of rock and soil materials Material barite powder (%) quartz sand (%) gravel particles (%) water (%) content 2.0 60.0 32.0 6.0 Tab.2 Mechanical parameters of the test material density(g/cm3) quality of water content (%) proportion(g/cm3) direct shear trength c(kpa) Φ(°) content 2.0 60.0 5.7 35.2 (3) The underside of the model(Slip surface) The model bottom of the clay layer of a thickness of 0.07m is made.
Assuming that the micro-pile for the linear elastic body, and does not consider the frictional resistance between the pile and soil resistance in front of the pile, the pile withstand the thrust can be calculated according to the mechanics of materials.
The Chinese Journal of Geological Hazard and Control.1998,9(l):1～9 [2] Kong Jiming.
Journal of Mountain Science.

The fracture properties of the thermo-setting materials of epoxy asphalt mixture were evaluated based on J-integral concept and ultimate strength and compared to that of HMA with thermo-plastic binder materials.
Only a few materials can meet these requirements, among which is the newly developed thermo-setting materials named epoxy asphalt mixture (EAM).
One of the most powerful tools to study the fracture properties of engineering materials is to incorporate fracture mechanics tools in HMA characterization.
All the raw materials are provided by the Headquarter of Sutong Bridges.
Yehia: Journal of Materials Science Vol. 37(2002), p.557-566.

Journal of Vibration Engineering. 21(2008) 600-607
Journal of Vibration Engineering.25 (2012)103-108
International Journal of Machine Tool & Manufacture. 43 (2003) 1035-1050
International Journal of Machine Tools &Manufacture.47 (2007) 1034-1045 [8] SUN Wei,WANG Bo, WEN Bangchun.
JOURNAL OF MECHANICAL ENGINEERING. 48(2012) 146-152

One type of MBOM information is a simple one-dimensional data table, composed of attrib fields related to the part(or material) itself, such as name, code, version, et al.
Journal of Tsinghua University(Science and Technology). 2002, 42(6):802-805.
Chinese Journal of Mechanical Engineering. 2004, 40(5): 118-120.
Chinese Journal of Mechanical Engineering. 2005, 41(04): 97-102.
Journal of Computer Aided Design & Computer Graphics. 2002, 14(5): 483-485.

[2] X.Chen Microporous and Mesoporous Materials 115 (2008) 164-169
Materials research innovations (2008) Vol.12
[5] Guobin Yi，Jianwei Guo Journal of Materials Science & Engineering (2005) Jun Vol.23 No.3
[7] Xiaobin Wang, Xiongfu Zhang, chemical engineering journal 156(2010) 562-570
[8] Zhiping Lai, Griselda Bonilla, science 300,456(2003)

Cross, Rheology of Non-Newtonian Fluids - A New Flow Equation for Pseudoplastic Systems, Journal of Colloid Science, 20 (1965) 417 - 437
Journal of Petroleum Science and Engineering, 76(3-4) (2011) 93 - 99
Engineering Science and Technology, an International Journal, 19(2), (2016) 875–887
Journal of the Brazilian Society of Mechanical Sciences and Engineering, 40(4) (2018) 222. doi:10.1007/s40430-018-1142-4 [31] O.
International Journal of Nonlinear Sciences and Numerical Simulation, 19(2) (2018) 93–106