Journal of South China University of Technology(Natural Science Edition) ›› 2012, Vol. 40 ›› Issue (7): 117-122.

• Materials Science & Technology • Previous Articles     Next Articles

Stress Analysis of Laminated Composite Plates with Wavelet Finite Element Method

Peng Hui-fen1,2  Meng Guang-wei1  Fan Sen3  Zhou Li-ming1   

  1. 1. College of Mechanical Science and Engineering,Jilin University,Changchun 130022,Jilin,China; 2. College of Mechanical Science and Engineering,Northeast Petroleum University,Daqing 163318,Heilongjiang,China; 3. College of Petroleum Engineering,Northeast Petroleum University,Daqing 163318,Heilongjiang,China
  • Received:2011-06-09 Revised:2012-03-07 Online:2012-07-25 Published:2012-06-01
  • Contact: 彭惠芬(1969-) ，女，副教授，主要从事疲劳、断裂数值计算研究． E-mail:phfdaqing@163.com
  • About author:彭惠芬(1969-) ，女，副教授，主要从事疲劳、断裂数值计算研究．
  • Supported by:

    高等学校博士学科专项科研基金资助项目( 20060183063) ; 吉林省科学技术厅基金资助项目( 20090540)

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Abstract:

In order to improve the accuracy and efficiency of numerical calculation of laminated composite plates,based on laminated composite plate theories, the element transformation matrixes of BSWI ( B-spline Wavelet on the Interval) for laminated composite plates are constructed. The tensor product of scaling functions of BSWI with the same scale but different orders is used as interpolation function; the matrixes have the characteristics of continuity
and compatibility for node displacement,deflection and its derivatives. Based on the principle of virtual work,the BSWI element stiffness equation of laminated composite plates is derived. The relationship between deflections of nodes on diagonal OA and their distances to the center of the laminated composite plate is analyzed. The distributions of stress and strain of laminated composite plates under axial loads are also analyzed. Numerical experiments show that BSWI finite element method for stress analysis of laminated composite plates can achieve higher numerical accuracy with fewer elements and freedoms.

Key words: BSWI, laminated composite plates, transformation matrix, stiffness equation

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