Applied Mathematics and Mechanics (English Edition) ›› 2015, Vol. 36 ›› Issue (1): 1-10.doi: https://doi.org/10.1007/s10483-015-1900-7

• 论文 •    下一篇

Scale effects on nonlocal buckling analysis of bilayer composite plates under non-uniform uniaxial loads

Xiang-wu PENG, Xing-ming GUO, Liang LIU, Bing-jie WU   

  1. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai University, Shanghai 200072, P. R. China
  • 收稿日期:2014-06-13 修回日期:2014-10-31 出版日期:2015-01-01 发布日期:2015-01-01
  • 通讯作者: Xing-ming GUO, xmguo@shu.edu.cn E-mail:xmguo@shu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Nos. 10632040 and 11472163), the National Key Basic Research Project of China (No. 2014CB04623), and the Shanghai Municipal Commission of Eduction (No. 13ZZ067)

Scale effects on nonlocal buckling analysis of bilayer composite plates under non-uniform uniaxial loads

Xiang-wu PENG, Xing-ming GUO, Liang LIU, Bing-jie WU   

  1. Shanghai Institute of Applied Mathematics and Mechanics, Shanghai Key Laboratory of Mechanics in Energy Engineering, Shanghai University, Shanghai 200072, P. R. China
  • Received:2014-06-13 Revised:2014-10-31 Online:2015-01-01 Published:2015-01-01
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos. 10632040 and 11472163), the National Key Basic Research Project of China (No. 2014CB04623), and the Shanghai Municipal Commission of Eduction (No. 13ZZ067)

摘要:

Scale effects are studied on the buckling behavior of bilayer composite plates under non-uniform uniaxial compression via the nonlocal theory. Each isotropic plate is composed of a material that is different from others, and the adhesive between the plates is modeled as the Winkler elastic medium. According to the symmetry, effects of the Winkler non-dimensional parameter, the thickness ratio, the ratio of Young's moduli, and the aspect ratio are also considered on the buckling problem of bilayer plates, where only the top plate is under the uniaxial compression. Numerical examples show that the Winkler elastic coefficient, the thickness ratio, and the ratio of Young's moduli play decisive roles in the buckling behavior. Nonlocal effect is significant when the high-order buckling mode occurs or the aspect ratio is small.

关键词: buckling, bilayer composite plates, Winkler elastic medium, nonlocal scale effect

Abstract:

Scale effects are studied on the buckling behavior of bilayer composite plates under non-uniform uniaxial compression via the nonlocal theory. Each isotropic plate is composed of a material that is different from others, and the adhesive between the plates is modeled as the Winkler elastic medium. According to the symmetry, effects of the Winkler non-dimensional parameter, the thickness ratio, the ratio of Young's moduli, and the aspect ratio are also considered on the buckling problem of bilayer plates, where only the top plate is under the uniaxial compression. Numerical examples show that the Winkler elastic coefficient, the thickness ratio, and the ratio of Young's moduli play decisive roles in the buckling behavior. Nonlocal effect is significant when the high-order buckling mode occurs or the aspect ratio is small.

Key words: Winkler elastic medium, buckling, nonlocal scale effect, bilayer composite plates

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