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Online since: July 2014
Authors: Nan Li
Nonlinear Finite element analysis of joint model The constitutive of materials In the finite element analysis, the steel is assumed to be isotropic material.
The elastic modulus, yield strength of steel is determined by the material performance test.
The test specimens due to the existence of bias weld defects, brittle material, processing model size, initial defect.
References [1] Linhai Han: Concrete-Filled Steel Tubular Structure,Science press,china,(2000) [2] Linhai Han:Modern Concrete-Filled Steel Tubular Structure Technology,edited by China architecture and building press,(2004)
[3] CECS159:2004,Technical Code on the Concrete-Filled Rectangle Steel Tubular Structures,China Planning Press,Beijing,(2004) [4] Tianhua zhou:Experimental Studies on seismic behavior of concrete-filled Steel Square Tubular Column and Steet Beam Joints under cyclic Loading,Journal of Building Structures,(2004),vol,25,p9-16
Online since: March 2015
Authors: Mohd Yazid Mohd Yunos, Mohd Nasrun Mohd Nawi, Md Azree Othuman Mydin, Adi Irfan Che Ani
Even though lightweight foamed concrete has low mechanical properties compared to normal weight concrete, there is a potential of using this material as partition or load-bearing wall in low-rise residential construction.
While many of the design standards for concrete structures have been updated with detailed material properties and specifications under ambient conditions, there are no reliable material properties for the high-temperature properties of foamed concrete in the codes and standards [3].
A variety of test methods may be used to obtain different aspects of mechanical properties of materials at high temperatures, including the stressed test, the unstressed test, and the unstressed residual strength test [8].
Australian J. of Basic & Applied Sciences, 5 (2011): 1727-1733 [3] M.A.
Journal of Thin-walled Structures, 49 (2011): 66-76 [5] C.H.
Online since: February 2006
Authors: G. Cao, Sindo Kou
Ding, Materials Letters, 2002, vol. 53 (1-2), pp. 35-39
Grushko, Materials Science and technology, 1995, vol. 11(9), pp. 926-932
Katgerman, Progress in Materials Science, 2004, vol. 49 (5), pp. 629- 711
Kou, Materials Science and Engineering, A, 2006, vol. 417(1-2), pp230-238
Kou, Metallurgical and Materials Transactions, under review.
Online since: September 2021
Authors: Alexandra O. Grigoreva, Kseniia Tarankova, Sergey D. Zaitsev
Introduction The connection between polymer science and materials science requires the synthesis of various polymer structures in order to obtain materials with new properties.
Partially, they can be applied for obtaining self-cleaning coating materials [2-4].
The fluorine content and its distribution along the chain determine the properties of such materials, whitch can be applied in electronics and medicine [5-7].
Moreover, controlled radical copolymerization is a powerful tool to modify materials based on fluorinated polymers.
Experimental Materials.
Online since: February 2011
Authors: Huai Ren Guo
The Reliability of Enlarging the Cross-Section in Reinforcing the Frame Construction Buildings Guo Huai-ren School of Civil Engineering and Architecture, Southwest University of Science and Technology, Mianyang, Sichuan 621010, China Guotian1208@yahoo.com Keywords: Seismic Damaged RC Frame; Broaden-Section Method; Reinforcement; Reliability; Crack Abstract.
Reinforcing just focus on first floor, reinforcing section is 500*200mm and reinforcement ratio is the same as the original. 2.2 Material property parameter Material property parameter mainly includes modulus of elasticity, Poisson’s ratio, yield strength and strain-hardening modulus.
This model mainly simulates real node, model’s geometric dimensioning and material property parameter are the same as experiment.
Journal of Building Structures, (2008), 29(4): 1-9 (in Chinese)
[2] LI Hongnan, XIAO Shiyun, HUO Linsheng.Damage investigation and analysis of engineering structures in the wenchuan earthquake [J].Journal of Building Structures, (2008), 29(4):10-19(in Chinese)
Online since: September 2011
Authors: Zong Xi Cai, Yi Lan Kang, Zhao Bin Su
Introduction For brittle material, cracking is the dominant failure mechanism due to the low tensile strength.
In this paper we are trying to use element splitting and interface separating technology to analyze crack propagation of brittle material.
According to the theory of linear-elastic fracture mechanics [6], crack propagation occurs when the composite stress intensity factor reaches the critical value of material, crack extension starts at the crack tip in the radial direction (θ) which is perpendicular to the direction of greatest tension as given below.
References [1] Qingsheng Yang and Wei Yang: Chinese Journal of Computational Mechanics (In Chinese) Vol. 14 (1997), p. 408 [2] Klein P. and Gao H: Engineering Fracture Mechanics Vol. 61 (1998), p. 21 [3] S.R.
Ariffin: J Zhejiang Univ Sci A Vol. 9 (2008), p. 32 [6] Shiyu Li, Taiming He and Xiangchu Yin: Rock Fracture Mechanics Introduction (In Chinese) (China Science and Technology University Press, China, 2010) [7] Xiaodong Kou and Weiyuan Zhou: Chiese Journal of Rock Mechanics and Engineering (In Chinese) Vol. 19 (2000), p. 18
Online since: January 2014
Authors: Yan Liu, Lian Yu Wei
At the same time, the theory of performance-based seismic strengthening design can meet the actual "personalized" design, which conducive to the popularization and application of new material, new technology.
Conclusion By conducting a large amount of research work, the engineer in the field of performance-based seismic design have made some encouraging results.Performance-based seismic strengthening of buildings design allows the reinforcement of the building structure designed the various predetermined performance objectives during the design to meet the requirements.It is based on the actual situation of the owners' needs and Engineering, economic, reasonable, effective seismic strengthening the development of performance theory fortification objects.Use a variety of new materials, new technology, new technology, especially with energy dissipation devices, isolation and other new ways to seismic strengthening.Focusing on engineering structure seismic performance of whole, balancing the aseismic ability of structures, to achieve the predetermined structure seismic performance objectives.
Journal of building structures, 1982
Xi 'an: Xi 'an building university of science and technology, 2006 [5]Pan Baoyu, Zhang Jingshu.
Journal of engineering and seismic strengthening reform, 2005, 27 (l) [6]Liu Boquan, Li Yingbin.
Online since: February 2014
Authors: Gong Gao
However, there were also 2 disadvantages of T2 when applying: firstly, if the distance was too long, the pump unit was needed, and this increased the cost of the project; secondly, the sludge used for the croplands must be nontoxic, thus the pre-test of the sludge would take parts of the human and material resources
Besides, based on the wide market of bricks, producing bricks using sludge as materials owned broad market and satisfactory benefits
Journal of Environmental Science and Health Part a-Toxic/Hazardous Substances & Environmental Engineering, 2014, 49(1): 101-107
International Journal of Phytoremediation, 2014, 16(1): 1-13
Online since: September 2011
Authors: Wen Feng Du, Zhi Yong Zhou, Fu Dong Yu
(3)The material has the characteristics of isotropy and low-strain linear elastic.
The steel or aluminum alloy, used as the material in the single-layer latticed shell structures, have these characteristics
The material is Q235 steel, with Young’s modulus(E) 206 kN/mm2 and poisson ratio 0.3.
Journal of Building Structures,2001,22(1): 62-68
Journal of Zhejiang University(Engineering Science),2006,40(3):506-510
Online since: August 2013
Authors: Jian Min Wang, Yan Jiao Li, Jie Zhang
The purpose of the mill load control is when the material grindability, particle size and parameter are changed, the output of mill can always guarantee the highest, and make mill stable operation.
The characteristics of the material during the operation, such as humidity and particle size, and the characteristics of the mill itself, will have a greater impact on the operating characteristics of the mill.
In actual production, the change of the material particle size and hardness will cause the change of mill power.
Intelligent optimal-search control of the grinding mill load [J].Journal of nanhua university (science &engineering edition), 2003, 17(2):32-34
Journal of Xi’an Jiaotong University, 2002, 36(4):385-389.