Applied Mathematics and Mechanics (English Edition) ›› 2003, Vol. 24 ›› Issue (9): 997-1008.

• 论文 •    下一篇

ANALYSIS OF ELASTIC LAYERS WITH DILATIVE EIGENSTRAINS VARYING THROUGH THE THICKNESS

何陵辉1, 林志华2, 刘人怀3   

  1. 1. Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, P. R. China;
    2. Department of Building and Construction, City University of Hong Kong, Hong Kong, P. R. China;
    3. Institute of Applied Mechanics, Jinan University, Guangzhou 510632, P. R. China
  • 收稿日期:2002-02-04 修回日期:2003-04-22 出版日期:2003-09-18 发布日期:2003-09-18
  • 基金资助:

    the National Natural Science Foundation of China (10272069);the Shanghai Key Subject Program

ANALYSIS OF ELASTIC LAYERS WITH DILATIVE EIGENSTRAINS VARYING THROUGH THE THICKNESS

HE Ling-hui1, LIM Chee-wah2, LIU Ren-huai 3   

  1. 1. Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, P. R. China;
    2. Department of Building and Construction, City University of Hong Kong, Hong Kong, P. R. China;
    3. Institute of Applied Mechanics, Jinan University, Guangzhou 510632, P. R. China
  • Received:2002-02-04 Revised:2003-04-22 Online:2003-09-18 Published:2003-09-18
  • Supported by:

    the National Natural Science Foundation of China (10272069);the Shanghai Key Subject Program

摘要: Elastic layers with varying dilative eigenstrains through the thickness were concerned. A general procedure was proposed for the analysis of such layers under arbitrary loads. The study is based on the state-space method and an asymptotic expansion technique. When the external loads are uniform, the expansion terminates after some leading terms, and an explicit representation for the mechanical field in a layer is obtained. This representation relies only on the displacement components of the mid-plane, which are governed by a set of two-dimensional differential equations similar to those in the classical plate theory. Consequently, obtaining the solution to the two-dimensional equations immediately gives the three-dimensional responses of the layer. As an illustrative example, a clamped elliptical layer under a uniformly distributed transverse load is analyzed in detail.

Abstract: Elastic layers with varying dilative eigenstrains through the thickness were concerned. A general procedure was proposed for the analysis of such layers under arbitrary loads. The study is based on the state-space method and an asymptotic expansion technique. When the external loads are uniform, the expansion terminates after some leading terms, and an explicit representation for the mechanical field in a layer is obtained. This representation relies only on the displacement components of the mid-plane, which are governed by a set of two-dimensional differential equations similar to those in the classical plate theory. Consequently, obtaining the solution to the two-dimensional equations immediately gives the three-dimensional responses of the layer. As an illustrative example, a clamped elliptical layer under a uniformly distributed transverse load is analyzed in detail.

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