• 作者： 金大仁; 林世章
• 作者服務機構： 國立交通大學機械工程研究所
• 中文摘要： 本文應用隨機有限單元法來對複合材料層板作可靠性分析。複合材料層板之材料性質，強度及疊層方式都可視為隨機變數。當複合材料板中任一層發生破壞時，整個結構便設為失去其功能，本文提出一分析方法來計算其發生之機率，藉此評估設計之可靠性。
• 英文摘要： A stochastic finite element method is developed for reliability studies of laminated composite platessubjected to transverse loadings with uncertain material properties, uncertain stacking sequences, andrandom strength parameters. The stochastic finite element method is formulated on the basis of the first-order shear deformation theory and the mean-centered second-order perturbation technique. Failure of alaminated composite plate is assumed to occur when any one of the plies fails. The maximum workcriterion is adopted as the limit state equation in the reliability analysis. The Hasofer-Lind method is thenapplied, and a modified approach of Rackwitz's algorithm is proposed for the evaluation of plate reliability.The present method for reliability analysis can be straightforwardly used to study the reliability of practicallaminated composite plate problems. To establish the validity of the present method, a number ofexamples are solved and the results obtained using the Monte Carlo method are given for comparison.
• 中文關鍵字： laminates; reliability; composite materials; stochastic flnite element; plates; stress analysis
• 英文關鍵字： --