Applied Mathematics and Mechanics (English Edition) ›› 2020, Vol. 41 ›› Issue (7): 1055-1068.doi: https://doi.org/10.1007/s10483-020-2626-6

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A procedure of the method of reverberation ray matrix for the buckling analysis of a thin multi-span plate

Zhiwei LI, Guohua NIE   

  1. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China
  • 收稿日期:2019-12-26 修回日期:2020-03-29 发布日期:2020-07-03
  • 通讯作者: Guohua NIE E-mail:ghnie@tongji.edu.cn

A procedure of the method of reverberation ray matrix for the buckling analysis of a thin multi-span plate

Zhiwei LI, Guohua NIE   

  1. School of Aerospace Engineering and Applied Mechanics, Tongji University, Shanghai 200092, China
  • Received:2019-12-26 Revised:2020-03-29 Published:2020-07-03
  • Contact: Guohua NIE E-mail:ghnie@tongji.edu.cn

摘要: A procedure of the method of reverberation ray matrix (MRRM) is developed to perform the buckling analysis of thin multi-span rectangular plates having internal line supports or stiffeners. A computation algorithm for the reverberation ray matrix in the MRRM is derived to determine the buckling loading. Specifically, the analytical solutions are presented for the buckling of the structure having two opposite simply-supported or clamped-supported edges with spans, while the constraint condition of two remaining edges may be in any combination of free, simply-supported, and clamped boundary conditions. Furthermore, based on the analysis of matrices relating to the unknown coefficients in the solution form for the deflection in terms of buckling modal functions, some recursive equations (REs) for the MRRM are introduced to generate a reduced reverberation ray matrix with unchanged dimension when the number of spans increases, which promotes the computation efficiency. Several numerical examples are given, and the present results are compared with the known solutions to illustrate the validity and accurateness of the MRRM for the buckling analysis.

关键词: multi-span, thin rectangular plate, buckling, method of reverberation ray matrix (MRRM), recursive equation (RE) Chinese Library

Abstract: A procedure of the method of reverberation ray matrix (MRRM) is developed to perform the buckling analysis of thin multi-span rectangular plates having internal line supports or stiffeners. A computation algorithm for the reverberation ray matrix in the MRRM is derived to determine the buckling loading. Specifically, the analytical solutions are presented for the buckling of the structure having two opposite simply-supported or clamped-supported edges with spans, while the constraint condition of two remaining edges may be in any combination of free, simply-supported, and clamped boundary conditions. Furthermore, based on the analysis of matrices relating to the unknown coefficients in the solution form for the deflection in terms of buckling modal functions, some recursive equations (REs) for the MRRM are introduced to generate a reduced reverberation ray matrix with unchanged dimension when the number of spans increases, which promotes the computation efficiency. Several numerical examples are given, and the present results are compared with the known solutions to illustrate the validity and accurateness of the MRRM for the buckling analysis.

Key words: multi-span, thin rectangular plate, buckling, method of reverberation ray matrix (MRRM), recursive equation (RE) Chinese Library

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