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Online since: December 2010
Authors: Feng Guo Jiang, Zhen Qing Wang
The Truss Structural Optimization Design Based on Improved Hybrid Genetic Algorithm Fengguo Jiang1,2,a , Zhenqing Wang1 1 School of Civil Engineering, Harbin Engineering University, Harbin,Heilongjiang 150001, China 2 School of Civil Engineering, Heilongjiang Institute of Science & Technology, Harbin, Heilongjiang, 150027, China ajiangfg123@yahoo.com.cn Keywords: genetic algorithm; gradient algorithm; hybrid genetic algorithm; structural optimization.
Structural optimization calculation example Super quiescent plane truss showed as figure 1, elasticity modulus is , material density is,the maximum allowable stress is , the maximum allowable displacement is,each strut section area is not less than,. try to optimize design on the structure.
Improve Adaptive Genetic Algorithm,[J].China Academic Journal Digest,1998,11(22):120-126P(in Chinese) [9] Michalewicz Z,et al.
Online since: January 2014
Authors: Ting Ting Liu
Introduction Energy is an important material foundation of modern economic development.
Annual heating energy consumption calculating table during working days Building name Function Structure area (m2) Normal heating hours a day On-duty heating hours a day Type Annual heating energy consumption calculation (GJ) No.5 Dormitory 1784 24 0 I = 60×20960.2×0.73×93×24×3.6×10-6 = 7377 No.6 Dormitory 1528.2 24 0 I No.7 Dormitory 1294 24 0 I No.9 Dormitory 533 24 0 I No.10 Dormitory 8881 24 0 I No.13 Dormitory 6500 24 0 I No.15 Transformer room 440 24 0 I No.8 Teaching building 2361.6 14 10 II Normal heating:= 60×28056.8×0.73×93×14×3.6×10-6 = 5760 On-duty heating: ×93×10×3.6×10-6 = 777 No.11 Training building 3411 14 10 II No.12 Teaching building 2471 14 10 II No.14 Bathroom 714.3 14 10 II No.1 Office 6903.9 14 10 II No.2 Teaching building 6342 14 10 II No.4 Science and technology 4182 14 10 II No.3 Dining room 1671 14 10 III Sum 13914 Energy saving rate evaluation of time and zone control heating.
Journal of HV&AC,2013,43(6):109-112
Online since: October 2013
Authors: Ke Chen, Lei Wang
For continuous box girder, β depends on the bridge span, geometry, material properties, and section form.
Acknowledgements This study is funded by Science & Technology Project (No. 2010H20) Department of Transport, Zhejiang Province, China.
Huang, Journal of Chongqing Jiaotong University, Vol. 27, 5 (2008)
Online since: December 2014
Authors: Chun Yu Wang, Yang Li, Qing Wei Dong, Xin Yue Xie
Multispectral imaging technology is different from the traditional single wide-band imaging technology that will imaging and spectroscopy measurement technology combines spatial information acquisition includes not only two-dimensional information, also contains information as the spectral radiation wavelength distribution, forming the so-called "data cube".Multispectral image with the "unity map" feature, compared to traditional single wide band optical detection technology, multi-spectral imaging can provide richer information about the target image, the target material recognition, anomaly detection, military camouflage target identification, target detection technology in the field of complex background suppression has a very broad application.
Journal of Xi an University of Arts & Science(Nat Sci Ed)., Vol.15 No.4:20-22(2012) , In Chinese
Online since: April 2013
Authors: Xue Jing Zheng, Meng Jun Yang, Wan Dong Zheng, Yun Kun Bu
Energy Consumption Analysis of Animation-park in Sino-Singapore Tianjin Eco-city ZHENG Xuejing1,a, YANG Mengjun2,b ZHENG Wandong1,c BU Yunkun2,d 1School of Environmental Science and Engineering, Tianjin University, Tianjin 300072, China 2Tianjin Eco-City Energy Investment and Construction Co., Ltd.
[2] Swedish Defense Material Administration.
Journal of Industrial Engineering and Engineering Management 2009.
Online since: January 2013
Authors: Feng Tian, Jian Yang, Yan Jun Zhang, Zhen Jie Du, Wan Yu Gao, Sheng Jun Liu, Ming Xi Hu
The Structural Design and Experimental Research of multi-level Cushioning Packaging Storage Box Mingxi Hu1,a, Shengjun Liu1,b, Yanjun Zhang 1,c, Zhenjie Du1,d, Feng Tian﹡1,e, Jian Yang1,fand Wanyu Gao﹡1,g 1Institute of Medical Equipment, Academy of Military Medical Sciences, Tianjin, 300161, China ahumax@126.com , blsj_tj@yahoo.com.cn , camms7@126.com, dyangduhan@yeah.net, etianfeng62037@yahoo.com.cn, f jianyang03@gmail.com, gweizhuangsuogao@126.com Keywords: multi-level Cushioning; Packaging; fragility value Abstract: Aiming at the damage of package caused by emergency rescue and other severe transportation environment, a multi-level cushioning packaging storage box is proposed in this paper, the precise instrument is fixed in the box, which achieves the box-instrument integration.
Impact force is the biggest at the moment when airdrop touches down the ground, cork base, box cover and box body are made of glass fiber reinforced modified low-density polythene material by rotational molding, which has the function of absorbing vibration and cushion, when airdrop touches down the ground, the impact first acts on the cork base, the cork base performs the first force-absorption and cushion, then the impact is transferred to rubber absorber, the absorber performs the second force-absorption and cushion, then the impact is transferred to box body, the box body performs the third force-absorption and cushion, then the impact is transferred to ball steel wire rope spring, the ball steel wire rope spring performs the fourth force-absorption and cushion, then the impact is transferred to inner frame, the hydraulic damper fixed on the inner frame performs the fifth force-absorption and cushion, which is the most important in this packaging storage box, instrument fixed frame
Optimization design of MDOF package cushioning system made of polyethylene[J], Journal of Vibration and Shock, Vol.31 No.3 2012:69-72 [2] Ge Ren-wei, Ou Yang-yong.
Online since: May 2012
Authors: Hong Da Zhang, Xin Sheng Xu, Xiao Da Xu
Introduction As a kind of new composite material, FRP bars have many advantages, corrosion resistance, fatigue resistance, magnetic resistance, electric insulation, little creep, small specific gravity, etc.
Acknowledgment The work was supported by the Natural Science Foundation of Shandong Province of China under Grant No ZR2009FM053, Ph.D Programs Foundation of University of Jinan under Grant No XBS0838, and 2010 House and Urban-rural Development Scientific Plan of Shandong Province.
[2] Houssam A, Toutanji, Mohamed Saafi: ACI Structure Journal, 2000, 97(9): 71 -78
Online since: December 2012
Authors: Liang Zhao, Ji Sheng Ma, Fang Yi Liu, Zhi Kui Chen
In addition, there is no effective data center to process the collected information, providing no useful material to the bridge experts.
Journal of TongJi University, 2001, 29(1):65-69
Beijing:Science Press, 2010.6-8
Online since: December 2013
Authors: Qing Zou, Jia Qi Wu, Tao Wang, Qi Chao Zhang, Yong Li Zhang, Jian Ning Yao
Structures Analysis and Optimum Design of the Large Stroke Two-axis Fast Tool Servo Jiaqi Wua, Qing Zoub, Tao Wang, Qichao Zhang*,c, Yongli Zhang, Jianning Yao School of Mechanical Science and Engineering, Jilin University, Changchun, China a280177291@qq.com, bzouqing@jlu.edu.cn, czhangqichao2012@163.com Keywords: FTS; Flexible Hinge; Two Degrees of Freedom; Optimization Design.
According to the design requirements of this device and antimagnetic of voice coil motor drive, 0Cr17Ni4Cu4Nb with the allowable stress of 631MPa, elastic modulus of 191GPa, Poisson's ratio of 0.3 is chosen as the material of flexible hinge.
[3] Ho-Sang Kim,Kwang-11 Lee, Kyoung-Min Lee, Young-Bong Bang, Fabrication of free-form surfaces using a long-stroke fast tool servo and corrective figuring with on-machine measurement[J].International Journal of Machine Tools & Manufacture, 2009(49):991-997
Online since: December 2012
Authors: Chong Zhang, Yi Jiang
Contact force parameters are related to the material properties, they are set according to test data and empirical value.
Bei-jing: Science Press (2008)
Journal of Ballistics.
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