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《Chinese Quarterly of Mechanics》 2002-03
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Mean Response Considering Random Structural Properties in Stochastic Structural Analysis

CHEN Jian-bing, LI Jie (Department of Building Engineering, School of Civil Engineering, Tongji University, Shanghai, 200092, P.R. China)  
If the randomness of the properties is considered in the structural analysis, the response evaluated with mean properties couldn't reflect the mean response. In the present paper, two typical examples were presented to illustrate that for structures with random parameters, under static loading for some special probability distribution the response of structures with mean parameters is equal to the mean response of the structures. But in general situation with variation of parameters increasing, the discrepancy between response of structure with mean parameters and the mean response of the structures enlarges greatly. While in dynamic situation, the relative errors between the two quantities are far greater than that in static situation, moreover, they are sensitive to the relative relationship between the frequency spectra and the frequency of the structure. Thus, the result of deterministic structural analysis based on mean parameters may be greatly different from the response of the realistic engineering structures. Therefore, it is necessary to employ the stochastic structural model.
【Fund】: 国家杰出青年科学基金(59825105)
【CateGory Index】: O324
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【Citations】
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【Co-citations】
Chinese Journal Full-text Database 10 Hits
1 Wang Xianhui He Yong Gao Shuzi (School of Mechanics, NUST, Nanjing, 210094);A STUDY ON THE TOWING DYNAMICS OF A HOWITZER[J];Acta Armamentarii;2003-03
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1 Huang Dong-wei~1 Wang Hong-li~2 1.School of Science,Tianjin Polytechnic University,Tianjin 300160,China 2.School of Mechanical Engineering,Tianjin University,300072,China;The Increment-dimensional Precise Integrate Method in Stochastic Dynamic System[A];[C];2006
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【Co-references】
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1 HAN Jian-ping 1,2,WANG Fei-xing 1,LI Hui 1(1.Institute of Earthquake Protection and Disaster Mitigation,Lanzhou University of Technology,Lanzhou 730050,China;2.State Key Laboratory for Disaster Reduction in Civil Engineering,Tongji University,Shanghai 200092,China);Comparison of Modal Parameter Identification Algorithms Based on Shaking Table Model Test Data[J];Journal of Huazhong University of Science and Technology(Urban Science Edition);2008-03
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