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The Seismic Behavior of Strengthened Joints Between Concrete-filled Steel Tubes and Beams Based on the Numerical Simulation Technology Yun-peng Chu, Yong Yao, Shu-lian Xiao, Yue Chen School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China Email: chuyunpeng@swust.edu.cn , yy001221@163.com , 349779228@qq.com 471469647@qq.com Keywords: Frame joint; Nonlinear FEM analysis; Ductility; Seismic behavior Abstract, As a key part in concrete-filled steel tubular frames, the seismic behavior of joints between concrete-filled steel tubes and beams needs more research because of the complexity of stress under the reciprocating load. the behavior of 9 strengthened joints connecting concrete-filled steel tube with H-shaped steel beam have been analyzed under reversed cyclic loading condition by using finite element analysis software ANSYS, and the result show that: (1) The ultimate bearing capacity, energy dissipation capacity
Filled concrete effectively improve the local stability and fire resistance capability of steel tube, and the internal restraints of concrete filled steel pipe has increased the strength, ductility and toughness properties of concrete significantly, give full play to the strengths and potential of the two materials, by using of this interaction of the two materials produced during loading process, can reduce the pipe cross-section of components of this concrete filled steel tubular structure, improve load capacity significantly, save the cost of steel and infrastructure, reducing structural cost and save a lot of support construction template work, can reduce 1/4-1/3 period, which causing industry wide attention [2-4].
Take steel Q235-B, the yield strength 215MPa, tensile strength 320Mpa; assuming ideal elastic-plastic material model, using Von-Mises yield rule and bilinear kinematic hardening constitutive relation, elastic modulus E = 2.1 × 105N/mm2, Poisson's ratio 0.3; Concrete grade C40, modulus of elasticity E = 3.25×104N/mm2, Poisson's ratio 0.173, using the William-warnke five-parameter failure rule.
Journal of Building Structures,2008，38（7）：10-14.
Journal of Southwest University of Science and Technology.2009, 24(1):7-13.

In engineering, the change of cushion’s modulus was controlled by its material’s gradation.
When the material particle was oversized, there was no mobility of cushion and it was hardly to contact with the particle of soil, when the material particle was undersized, the mobility of cushion was increased, in which the bearing performance of pile was hindered, particularly for the soft soil foundation.
Wuhan University of Science and Technology, Wuhan 2003
CHINA CIVRL ENGINEERING JOURNAL, Vol.37(2004), p.78 [4] Xie Tao, Yuan Wenzhong, Zhu Ming.
JOURNAL OF HIGHWAY AND TRANSPORTATION RESEARCH AND DEVELOPMENT, Vol.20-5(2003), p. 61 [6] CHEN Zhi-jian, ZHANG Xiong-wen, LIU Yi, etc..

Correspondingly, the byproduct glycerol of the first reactor is removed from the product with help of the immiscible liquid–liquid separation and residues go on the second transesterifi-cation called two-step reaction process, which can be further conversion of raw materials.
The biodiesel phase, containing biodiesel, unreacted methanol and raw material oil, enters the second reactor to react with additional catalyst NaOH.
(2) Separating materials continuously between two CSTR, taking into account the effect of temperature on the separation, takes separation temperature is around about 323 K and reaction pressure is set to 1 atm
Yu, “Design and control of biodiesel production processes with phase split and recycle in the reactor system,” Journal of the Taiwan Institute of Chemical Engineers, vol. 42, 2011, pp. 741–750
Zhu, “Kinetics of transesterification of soybean oil,” Journal of American Oil Chemical Society, vol.74, 1997, pp. 1457-1463

It can mill high hardness (42 HRC-65 HRC) metal materials directly.
(5) The material of ballscrew is uniform and isotropic, and the thermal conductivity is constant.
Acknowledgments The authors acknowledge the financial support of national natural science foundation of China (Project # 51075246), "High-end CNC machine tools and basic manufacturing equipment," National Science and Technology major projects (2012ZX04002013), Shandong Province Education Department Plan (J09LD12).
Chen: Journal of Hua Zhong University of Technology, Vol. 19 (1991) No.8,p.75.
Song and C.R Zhang: Journal of Shandong University of Technology, Vol. 30 (2000) No.2,p.160.

On the other hand, although the motional impedance of piezoelectric-based microresonators can be below 50Ω, the Q factor cannot be very high due to high loss in the piezoelectric materials [3].
PnC resonator was proposed as a potential candidate to overcome the aforementioned trade-off between Q factor and motional impedance as PnC can store elastic energy in microcavity made on high Q materials such as silicon [12].
Pisano, "Single-chip multiple-frequency AlN MEMS filters based on contour-mode piezoelectric resonators," Journal of Microelectromechanical Systems, vol. 16, pp. 319-328, Apr 2007
Huang, "Frequency band-gap measurement of two-dimensional air/silicon phononic crystals using layered slanted finger interdigital transducers," Journal of Applied Physics, vol. 97, May 2005
El-Kady, "Microfabricated phononic crystal devices and applications," Measurement Science & Technology, vol. 20, Jan 2009

With the improvement of precision of machining equipment such as CNC machine tool and the appearance of super hard cutting tool materials such as PCBN and PCD, hard cutting has become a new machining method for quenched steel.
With the increase of feed rate, cutting temperature and material removal rate will heighten, plastic deformation of the workpiece in the cutting process will enlarge, causing the larger residual compressive stress produced on the surface of GCr15 steel.
Acknowledgments The paper is sponsored by National Natural Science Foundation of China (No. 51075127), Program for Science & Technology Innovation Talents in Universities of Henan Province (No. 2010HASTIT031) and Henan Provincial Key Discipline.
[4] Xiao L. and Wen H.D.: Journal of Three Gorges University, Vol.31 (2009), p. 57-59
[5] Patrik Dahlman, Fredrik Gunnberg: Journal of Materials Processing Technology, Vol.147 (2004), p. 181-184.

In addition, the material for wing root is the same as that of veins.
Acknowledgement This research was supported by the National Natural Science Foundation of China (Grant No. 50575183), Provincial Natural Science Foundation research project of Shaanxi (Grant No. 2012JM7010) and the Innovation Training Project of Undergraduate.
Non-linear Dynamic Analysis of a Piezoelectrically Actuated Flapping Wing, JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES, 2010, 21:1157-1167
D., Performence Improvement of IPMC (Ionic Polymer Metal Composites) for a Flapping Actuator,” International Journal of Control, Automation, and Systems, Vol. 4, No. 6, 2006, pp. 748-755
A Dragonfly Inspired Flapping Wing Actuated By Electro Active Polymers, 50th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
17th 4 - 7 May 2009, Palm Springs, California

Villa Živković, new design proposal- circular atrium that allows undisturbed growth of pine trees The use of glass as a material primarily serves to emphasize the absence of classical walls and constructions, and therefore the absence of the building in the classical sense, as we recognize it.
Introducing innovative materials and inventive techniques, this approach to revitalization is the proposal of contemporary method of preservation of architectural heritage, but it is also recognized and perceived as the most direct and the sincerest act of glorification of important cultural heritage building.
Features of energy efficient upgrade of historic buildings (illustrated with the example of Saint-Petersburg) (2014) Journal of Applied Engineering Science, Vol. 12 (1), pp. 1-10
Solar energy systems in the reconstruction of heritage historical buildings of the northern towns (for example Sankt-Petersburg) (2014) Journal of Applied Engineering Science, Vol. 12 (2), pp. 121-128
Solar power supply in the system of restoration and reconstruction remote historic and cultural objects (on the example of Montenegro) (2014) Applied Mechanics and Materials.

Vaporized material is deposited on a substrate.
References [1] HadisMorkoç, ÜmitÖzgür: Zinc Oxide Nanostructures: Zinc Oxide Fundamentals, Materials and Device Technology,edtied by WILEY-VCH Verlag GmbH & Co.
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Atanasov: Materials Science and Engineering: B.

Because of this, mechanical properties of fibers can be reduced, so it is not suitable for use fibers as reinforcement in any composite materials.
Acknowledgement This work was financially supported by Czech Technical University in Prague - SGS projects SGS16/ 201/OHK1/3T/11 and by the Czech Science Foundation research project 15-12420S.
Vandewalle, Fiber reinforced concrete: new design perspectives, Materials and Structures, 42 (2009) 1261-1281
Latifi, Investigation on pullout behavior of different polymeric fibers from fine aggregates concrete, Journal of industrial textiles, 45 (2016) 995-1008
Troedec et all., Influence of chemical treatments on adhesion properties of hemp fibres, Journal of colloid and inteface science, 356 (2011) 303-310