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Development and Improvement of Numerical Models of Welded Joints with Multiple Defects Mihajlo Aranđelović1,a, Simon Sedmak1,b*, Aleksandar Sedmak2,c, Branislav Đorđević1,d, Radomir Jovičić1,e 1Innovation Centre of Faculty of Mechanical Engineering, Belgrade, Serbia 2Faculty of Mechanical Engineering, University of Belgrade, Belgrade, Serbia amixaylo23@gmail.com, b*simon.sedmak@yahoo.com, casedmak@mas.bg.ac.rs, db.djordjevic88@gmail.com, ejovicicrad@gmail.com Keywords: Finite element method, Welding, Welding defects, Numerical simulation Abstract.
Introduction Welded structures are of great importance in numerous industrial fields, including mechanical, civil, chemical and aerospace engineering, among many others [1-6].
Engineering Failure Analysis, 2019. 106: p. 104162

Seismic Isolation Design for Approach Spans of Suiwei Bridge in Wenchuan Wenzheng ZHU a, Zhonggen XU b School of Civil Engineering, Guangzhou University, Guangzhou 510006, China azhu7101@163.com, bxuzhonggen@126.com Keywords: Bridge; Isolation design; Energy-dissipation design; Isolation bearing; Response spectrum analysis; Time-history analysis.
References [1] Chen Waifah, Duan Lian. (2000), Bridge engineering handbook, CRC Press
[2] CECS126:2001.(2001), Technical specification for seismic- isolation with laminated rubber bearing isolators, China Association for Engineering Construction Standardization
Chopra.(2004), Dynamics of Structures—Theory and applications to Earthquake Engineering (Second Edition), PEARSON EDUCATION ASIA LIMITED.

Simulation on the Effects of Misaligned Coupling on the Output Intensity Distribution in Water-jet Guided Laser Chunqi Li1, a, Lijun Yang1, b, Yang Wang1, c and Jing Tang2, b 1School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, P.R.China 2School of Energy and Civil Engineering, Harbin university of Commerce, Harbin 150028, China aliangqq123123@163.com, byljtj@hit.edu.cn, cwyyh@hope.hit.edu.cn Keywords: Water-jet guided laser, Coupling misalignments, Output intensity distribution Abstract.
Yu: Infrared and Laser Engineering Vol.37 (2008), P. 3 [8] P.
Kruusing: Optics and Lasers in Engineering Vol. 41(2004), P. 307-P. 327 [10] B.

Study on Preparation Technique for Low-Cost Green Reactive Powder Concrete Feng Xing 1,a, Li-Dong Huang 1,b, Zheng-Liang Cao 1,c and Liang-Peng Deng 1,d 1 Shenzhen Municipal Key Laboratory for Durability of Civil Engineering Structure, Shenzhen University, Shenzhen, 518060, P.R.China a email:xingf@szu.edu.cn, bemail: hld001@sohu.com c email:zhengliangcao@126.com, demail:hlinm@tom.com Keywords: reactive powder concrete; silica fume; fly ash; steel fiber; strength Abstract.
RPC can be mixed and placed under normal construction conditions and engineered by addressing specific casting requirements.
[4] O.Bayard: Fracture Mechanics of Reactive Powder Concrete: Material Modelling and Experimental Investigations, Engineering Fracture Mechanics, 2003, (70), pp. 839-851
[10] HUANG Li-dong, XING Feng, DENG Liang-peng, and HUANG Pei-hong: Study on Factors Affecting the Strength of Reactive Powder Concrete, Journal of Shenzhen University Science and Engineering, 2004, 21(2), pp. 178-182(in Chinese).

On-machine profile measuring system for grinding surface of aspheric lens Xiangyang Lei 1, a, Hao Huang 1,b, Feng Yang 2,c, Xianhua Chen1,d and Qiao Xu1,e 1 Chengdu Fine Optical Engineering Research Center, Chengdu 610041, P.R.China 2 Department of Mechanical and Electrical Engineering, Xiamen University, Xiamen 361005, P.R.China aleixiangyang@163.com, bhaohuanghot@gmail.com, cyangfeng_12@126.com, dchenmail2@163.com, exuqiao@vip.sina.com Keywords: aspheric lens, grinding, surface form error, on-machine measurement.
So in the high-precision optical systems of aviation, aerospace, defense and civil areas, optical aspheric lens have broad application prospects [1-6].
Weight factor is mainly used for precise surface analysis and modification of the surface’s shape in engineering.
China Mechanical Engineering.

Research on Environmental Pollutants for Health Risk Assessment Wang Zhiyong 1, a, Cui Na 1,b,Liu Changrong1, Zhang Tianyu 1, Yang Shunfu 1 1 Hunan University of Technology, Institute of Civil Engineering, Zhuzhou Hunan 412007, China azywang668@126.com, bcuina_13@163.com Key word: health risk assessment, pollution of the environment, uncertainty.
Environmental Engineering, Vol.21 (2003), p.66
Journal of Hebei university of engineering, Vol.2 (2009), p.63
Safety and environment engineering, Vol.19 (2012), p.48.

Mechanisms of high efficiency and stabilization of baffled constructed wetland in treatment of domestic sewage YE Changbing1, 2,a, ZHOU Zhiming3,b , ZHAO Ke4,5,c , LIU Qin1,D 1 College of Resources and Environment, Yuxi Normal University, Yuxi 653100, China 2 Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008, China 3 School of Municipal and Enviromental Engineering, Jilin Architectural and Civil Engineering Institute, Changchun 130021, China 4Harbin Institute of Technology, Harbin, 150001, China 5China Northeast Municipal Engineering Design and Research Institute, Changchun, 130021, China ayechangbing@yxnu.net, b1091546672@qq.com, czhaoke326@126.com, d liuqin@yxnu.net Keywords: Mechanism; baffled constructed wetland; domestic sewage; service life Abstract.
Bioprocess and Biosystems Engineering.

Flexural Behavior of NSM CFRP - Stone Composite Beams: Experimental Investigation Zixiong Guo1, a, *, Yong Ye1, b, Baocheng Liu1, c, Yang Liu1, d 1College of Civil Engineering, Huaqiao University, Quanzhou 362021, China aguozxcy@hqu.edu.cn, bqzyeyong@126.com, cliubaocheng177@sina.com, dlyliuyang@hqu.edu.cn Keywords: stone structure, composite stone beam, CFRP, NSM, flexural behavior Abstract.
Chai, et al, Study and prospect of disaster prevention technology of stone masonry structures, Earthquake Resistant Engineering and Retrofitting. 31 (2009) 47-51.
Nordin, Concrete structures strengthened with near surface mounted reinforcement of CFRP, Advances in Structural Engineering. 6 (2003) 201-213
Teng, Near-surface mounted FRP reinforcement: An emerging technique for strengthening structures, Composites Part B: Engineering. 38 (2007) 119-143

Therefore, this report takes the Guangzhou International Exhibition Center as the engineering background and the test results as basis to check and inspect FE analysis mode of the multi-planar KK-OPOv joint in terms of failure mode, deformation process, ultimate bearing capacity and etc.
Journal of Structural Engineering, ASCE, 1996,122(8):893- 904
Journal of Structural Engineering, 1996, 122(8): 893-904
Shanghai: Tongji University, College of Civil Engineering, 2009.

School of Civil Engineering, Lishui University, Lishui, Zhejiang 323000, China; (2.
Key Laboratory of Ministry of Education for Geo-mechanics and Embankment Engineering, Hohai University, Nanjing 210098, China) a.
Recent years, some geotechnical engineering scholars use the elastoplastic model to analyze the FEM characteristics of rock-fill dams with asphalt concrete[3-6].
Chinese journal of geotechnical engineering, 1997, 10(4): 64-71.