|
|
||
|
|
|
|
This and the next image are from:
E.J. Barbero, A. Madeo, G. Zagari, R. Zinno and G. Zucco (University of Calabria, Italy),
“Imperfection sensitivity analysis of composite cylindrical shells using Koiter’s method”, International Journal for Computational Methods in Engineering Science and Mechanics, Vol.18, No.1, Special Issue: Buckling and Postbuckling Behaviour of Composite Laminated Shell Structures, pp 105-111, January 2017
http://dx.doi.org/10.1080/15502287.2016.1276359
ABSTRACT: The novel methodology for imperfection sensitivity analysis, presented in Barbero et al. [E.J. Barbero, A. Madeo, G. Zagari, R. Zinno, and G. Zucco, Imperfection Sensitivity Analysis of Laminated Foled Plate, Thin-Wall. Struct., vol. 90, pp. 128–139, 2015]. is here applied for the evaluation of limit load of composite cylindrical shells. Koiter’s perturbation method is used to calculate the imperfection paths emanating from mode interaction bifurcations, and the Monte Carlo method is used to test a large number of modes and all possible interactions among them. The computational cost is low because of the efficiency of Koiter’s method. The demands of Koiter’s method for accurate evaluations of higher order derivatives of the potential energy are met by a mixed, corotational element.
Page 326 / 444