(1.北方工業(yè)大學(xué)， 北京 100041；2.清華大學(xué)工程力學(xué)系， 北京 100084)
摘 要: 提出了一個復(fù)合材料性能參數(shù)識別問題的計算方法。該方法是通過運用有限元反分析理論和系統(tǒng)辨識技術(shù)建立起來的，當(dāng)給出復(fù)合材料結(jié)構(gòu)或者試件的位移測量值后， 用所提出的迭代計算方法，可以計算出相關(guān)的性能參數(shù)。給出了加權(quán)最小二乘法的迭代 計算公式和誤差估計公式。詳細(xì)討論了迭代計算中的收斂性問題，并針對二種類型的復(fù)籂合材料板的性能參數(shù)進行了模擬計算，計算結(jié)果表明，所提出的方法對解決復(fù)合材料以 及結(jié)構(gòu)的性能參數(shù)識別問題是行之有效的。
關(guān)鍵字: 參數(shù)識別 復(fù)合材料 反分析
（1.North China University of Technology, Beijing 100041
2. Department of Engineering Mechanics, Tsinghua University, Beijing 100084）
Abstract:An inverse mehtod is proposed for the identification of the mechanical parameter values of composite. This method is established on the basis of finite element method and inverse analysis theory and system identification technique. When the measured values of displacement of the structure or specimens of the composite are given, with the aid of the iterative scheme proposed, mechanical parameter values can be obtained. The weighted least square iteration computational equations and error estimate equations are given. The convergence states expressed by the iterative computations are discussed in detail, and inverse computation is carried out for two types of anisotropic layered composite plates. The results show that the solution to various mechanical par
Key words: parameter identification composite materials inverse method
