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《Journal of Zhejiang University(Engineering Science)》 2009-04
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Fuzzy self-adapting stochastic damage mechanism for Jingnan main dike of Yangtse Rive

WANG Ya-jun,ZHANG Wo-hua(MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering,Zhejiang University,Hangzhou 310027,China)  
Fuzzy stochastic damage mechanics development original model was introduced based on the harmony of damage conception,probability,fuzzy degree of membership on scale.Then a fuzzy stochastic damage conceptional model was proposed and a fuzzy stochastic variational formulation was deduced.Three damage variables' fuzzy definition status were formulated and translated by analyzing damage variable generalized uncertain essentiality.Furthermore,setup was three fuzzy damage variables' distribution,namely,half depressed distribution,swing distribution and combined swing distribution.The three distribution simulated various fuzzy evolution under diverse stochastic damage situation,and stochastic damage variables' fuzzy and de-fuzzy process were realized during adaptive generation and formation.Fuzzy stochastic finite element method and fuzzy stochastic damage were implemented concurrently under expansion theory with the adjustment on cumulative distribution function(CDF) and probabilistic density function(PDF) of fuzzy stochastic damage variables submitting to β probabilistic distribution.Three-dimensional fuzzy stochastic damage mechanical status of Jingnan main dike typical numerical model was analyzed by fuzzy stochastic damage finite element method program under property authority.
【Fund】: 国家自然科学基金资助项目(50379046);; 教育部博士点基金资助项目(A50221)
【CateGory Index】: TV871
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