Stochastic nonlinear failure analysis of laminated composite plates under compressive transverse loading |
| |
Authors: | Achchhe Lal B.N. SinghDipan Patel |
| |
Affiliation: | a Department of Mechanical Engineering, S.V. National Institute of Technology, Surat 395 007, India b Department of Aerospace Engineering, Indian Institute of Technology, Kharagpur 721 302, India |
| |
Abstract: | This paper present the second ordered statistics of first-ply failure response of laminated composite plate with random material properties under random loading. The basic formulation is based on higher order shear deformation plate theory (HSDT) with the geometrically nonlinearity in the von-Karman. The direct iterative based C0 nonlinear finite element method combined with mean centered first order perturbation technique developed by the authors are extended and successfully applied nonlinearity for failure problem with a reasonable accuracy to predict the second order statistics (standard deviation) of first-ply failure response using Tsai-Wu and Hoffman failure criterion with macroscopic analysis. Typical numerical results for various combinations of boundary conditions, plate thickness ratios, aspect ratios, laminates scheme and layers, elastic modulus ratios have been presented to illustrate the application of developed procedure. Some new results are presented and examined which clearly demonstrated the importance of the randomness in the system parameters in the failure response of the structures subjected to transverse loadings. |
| |
Keywords: | Composite laminated plates Random material properties Random loadings: stochastic nonlinear finite element method |
本文献已被 ScienceDirect 等数据库收录! |
|