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In-plane Stability Bearing Capacity of Variable Section Column Ming Chen 1,a and Xiao-fei Ma2,b 1Institute of Architecture and Civil Engineering, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia, China 2Institute of Architecture and Civil Engineering, Inner Mongolia University of Science and Technology, Baotou, Inner Mongolia, China acmlx-1978@163.com, b641699217@qq.com Keywords: variable section column; in-plane stability bearing capacity; finite element analysis; parametric analysis Abstract.
Fig. 1 Element division Fig. 2 Boundary conditions Fig.3 Finite element results validation Note: in Fig.3, zhu2a, finite element calculation result; zhu2b, test analysis result. 1.3 Material Properties The cover plate is perfectly elastic material and the wedge column is isotropy plastic material. 1.4 Boundary conditions and Loads The model was hinged in both ends, and nodes in both ends had not perpendicular to the axial displacement (i.e., UX=0, UY=0).
China Civil Engineering Journal,2004，37(1)：13-19(in Chinese)
Studies on in-plane stability bearing capacity of wedge variable section column [D].Baotou: Inner Mongolia University of Science and Technology, 2005(in Chinese)
Journal of Building Structures, 2004, 25(2): 8-14(in Chinese)

Bulletin of the Polish Academy of Sciences: Technical Sciences, 2004. 52(4):321-328
Journal of Highway and Transportation Research and Development, 1999(04):21-24
Journal of Constructional Steel Research, 2007. 63(12):1561-1569
Progress in Structural Engineering and Materials, 2000. 2(2):218-224
[8] Cong Dong, Development on modern reliability analysis theory of structural systems and it's applications. 2001, Beijing: Science Press

Materials and methods Occurrence data collection A total of 27 records for Chinese hybrid poplar were collected by assembling literatures, the geographic coordinates (WGS84 datum) could be achieved for the 10 records by literatures, and the Google Earth was used to geo-reference the other localities.
A1B represent a future world of very rapid economic growth, and a mix of technological development and fossil fuel use; A2 represent a future world of moderate economic growth, more heterogeneously distributed and with continuously increasing global population; B1 represent a convergent world with rapid change in economic structures toward a service and information economy, with reduction in material intensity, and the introduction of clean technologies, the lowest rate of population growth [1].
References [1] IPCC Climate change 2007. in: The physical science basis.
Journal of Nanjing Forestry University: Natural Sciences Edition Vol. 37 (2013), p. 1 (in Chinese) [9] T.
Journal of Nanjing Forestry University: Natural Sciences Edition Vol. 37 (2013), p. 82 (in Chinese) [11] T.

In which it could obtain the dominant factors for removal efficiencies of hazardous material.
Acknowledgements The authors would like to thank the National Science Council of the Republic of China and Tunghai University Global Research and Education on Environment and Society for financially supporting this research under Contract No.
[2] Al Lawati, W.M., et al., Journal of Hazardous Materials,(0) (2012): p
[6] Villanueva, C.M., et al., American Journal of Epidemiology. 165(2) (2007): p. 148-156
Legendre, Numerical Ecology. 2012: Elsevier Science Limited

When it comes to the materials, there were 2 main development directions.
Fuel cell is very complicated, which is related to theories of chemical thermodynamics, electrochemistry, electrocatalysis, material science, power system and automatic control.
The area of material: find more economic raw materials to produce chemistry batteries; find electrode materials with better stability and absorbability. 2.
Power Journal Vol 6 ( 2012) ,p.1-7 In Chinese [2] S.P.Jiang.
Science and Technology Progress countermeasure Vol5 (2013),p.74-77 In Chinese [4] Z.H.Wang,Y.H.Wang.

Effect of Shape Parameters on the Modal Properties of Stepped Ultrasonic Concentrator Milan Nad1,a, Lenka Cicmancova1,b 1Slovak University of Technology in Bratislava, Faculty of Materials Science and Technology, Department of Applied Mechanics, Paulinska 16, 917 24 Trnava, Slovak Republic amilan.nad@stuba.sk, blenka.cicmancova@stuba.sk Keywords: vibration, ultrasonic assisted machining, waveguide, modal properties.
Positive results [1,2] in machining processes of hardly machinable materials (hard, soft, brittle, ductile materials) are obtained by using ultrasonic assisted machining.
Acknowledgments This work was supported by the project of VEGA-1/0389/11 provided by the VEGA Commission of Ministry of Education, Science, Research and Sport of Slovak Republic.
Ultrasonically assisted turning of aviation materials.
Journal of Materials Process.

Fig.1 The reconstruction of physical product’s model 1.2 The experiment of materials and equipments Molding materials (ABS B601) and support materials (ABS S301) are two kinds of materials applied to rapid prototyping.
Preheat the rapid prototyping machine, wait for the temperature of forming chamber, molding materials and the support material reached to the machine acquiescent temperature (Molding chamber was 90℃, the molding material was 260℃, the support material was 240℃)
(9) Update material.
Select "File--3D printer--update material/nozzle", the material was updated to 1 kg
Journal of Manufacturing Systems, 2011, 30(4): 214-222

At the same time, many researchers have put into action and new biomass materials [4], new products [5,6], processing machinery [7] were developed.
Mechanical Parameters Testing of Tableware Materials.
The elastic modulus and Poisson’s ratio were calculated and the force-displacement curves of tableware materials were drawn by computer automatically.
The higher strength of materials was consistent with the stronger compression performance.
YE, Journal of Aahui Agri.

The RAP materials are typically composed of a combination of fine and coarse aggregates [3].
Materials and Methods Materials.
Applied sciences, 11 (2021), 5226
International Journal of Concrete Structures and Materials. 7 (2013), 155-163
Materials & Design. 64 (2014), 227-236

b 1Department of Materials Science & Engineering, Luoyang Institute of Science and Technology, Luoyang ,Henan,471023, China axie8086@126.com, bfqgzl@163.com Key words: Polyether-polyol, Polyurethane Elastomer, Properties Abstract: Polyurethane(PU) elastomers based on all kinds of polyether-polygol, diisocyanate and chain extender were prepared by two-step processes; the different influential factors of polyurethane elastomer were discussed in detail.
Soft segment provided polyurethane material elastic, toughness, and low temperature performance; Hard segment provided material hardness, strength, and modulus of performance.
Chemical propellant and polymer materials. 7(2009) 13-16
Chemical propellant and polymer materials. 5( 2007)46-49 [5] Y.L.Peng，M.Mei and F.
Journal of Wuhan Institute of chemical technology.26(2004)49-50 [6] H.M.Liu, L.B.Liu and L.C.Jia, TIPA /BDOChain study on mechanical properties of polyurethane elastomers .