Approximate formulas of shear buckling load of orthotropic plates restrained by lipped stiffeners

doi:10.19936/j.cnki.2096-8000.20260428.005

Abstract

Abstract: The analytical solution for in-plane shear-loaded orthotropic plates, where two opposite edges are simply supported and the other two are restrained by lipped stiffeners with warping stiffness, is obtained using the Rayleigh-Ritz method and a proper buckled shape function. By introducing generic non-dimensional parameters, i.e., orthotropic material parameters, warping constraint coefficient, and two types of buckling coefficients, the approximate formulas of the critical shear buckling load of orthotropic plates restrained by lipped stiffeners with warping stiffness are obtained by using the curve-fitting technique. The effectiveness and generality of the approximate formulas are validated with the analytical and transformed solutions, and ANSYS numerical analysis. The obtained approximate formulas can be applied to the local buckling analysis of composite beams with edge-stiffened flanges subjected to shear loads.

Key words: orthotropic plates, critical buckling load, Rayleigh-Ritz method, lipped stiffeners, uniform shear, composites

CLC Number:

TB332

DING Hui , LIU Qinghui , QIAO Pizhong. Approximate formulas of shear buckling load of orthotropic plates restrained by lipped stiffeners[J]. COMPOSITES SCIENCE AND ENGINEERING, 2026, 0(4): 36-43.

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