Three-dimensional corotational framework for elasto-plastic analysis of multilayered composite shells

AIAA Journal ◽  
2000 ◽  
Vol 38 ◽  
pp. 2320-2327 ◽  
Author(s):  
Arif Masud ◽  
Choon L. Tham
Keyword(s):  
Three Dimensional ◽  
Composite Shells ◽  
Multilayered Composite ◽  
Plastic Analysis

Assessment of Computational Models for Multilayered Composite Shells

1990 ◽  
Vol 43 (4) ◽  
pp. 67-97 ◽  
Author(s):  
Ahmed K. Noor ◽  
W. Scott Burton
Keyword(s):  
Shear Deformation ◽  
Strain Energy ◽  
Computational Models ◽  
Three Dimensional ◽  
Linear Displacement ◽  
Two Dimensional ◽  
Composite Shells ◽  
Response Characteristics ◽  
Multilayered Composite ◽  
Shear Deformation Theories

A review is made of the different approaches used for modeling multilayered composite shells. Discussion focuses on different approaches for developing two-dimensional shear deformation theories; classification of two-dimensional theories based on introducing plausible displacement, strain and/or stress assumptions in the thickness direction; first-order shear deformation theories based on linear displacement assumptions in the thickness coordinate; and efficient computational strategies for anisotropic composite shells. Extensive numerical results are presented showing the effects of variation in the lamination and geometric parameters of simply supported composite cylinders on the accuracy of the static and vibrational responses predicted by eight different modeling approaches (based on two-dimensional shear deformation theories). The standard of comparison is taken to be the exact three-dimensional elasticity solutions. The quantities compared include both the gross response characteristics (eg, vibration frequencies and strain energy components); and detailed, through-the-thickness distributions of displacements, stresses, and strain energy densities. Some of the future directions for research on the modeling of multilayered composite shells are outlined.

Three-Dimensional Analysis of Cracking in a Multilayered Composite

1995 ◽  
Vol 62 (2) ◽  
pp. 273-281 ◽  
Author(s):  
C. H. Kuo ◽  
L. M. Keer
Keyword(s):  
Integral Equations ◽  
Stiffness Matrix ◽  
Crack Opening ◽  
Crack Problem ◽  
Three Dimensional ◽  
Single Layer ◽  
Singular Integral Equations ◽  
Material System ◽  
Multilayered Composite ◽  
Penny Shaped Crack

The three-dimensional problem of a multilayered composite containing an arbitrarily oriented crack is considered in this paper. The crack problem is analyzed by the equivalent body force method, which reduces the problem to a set of singular integral equations. To compute the kernels of the integral equations, the stiffness matrix for the layered medium is formulated in the Hankel transformed domain. The transformed components of the Green’s functions and derivatives are determined by solving the stiffness matrix equations, and the kernels are evaluated by performing the inverse Hankel transform. The crack-opening displacements and the three modes of the stress intensity factor at the crack front are obtained by numerically solving the integral equations. Examples are given for a penny-shaped crack in a bimaterial and a three-material system, and for a semicircular crack in a single layer adhered to an elastic half-space.

scholarly journals Elasto-plastic analysis of three-dimensional structures using the isoparametric element

1972 ◽  
Vol 22 (2) ◽  
pp. 305-317 ◽  
Author(s):  
Ajaya K. Gupta ◽  
Bijan Mohraz ◽  
William C. Schnobrich
Keyword(s):  
Three Dimensional ◽  
Isoparametric Element ◽  
Plastic Analysis
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