Active structures with uncertainties Online publication date: Sun, 13-Jul-2003
by C.P. Pantelides, S.-R. Tzan
International Journal of Computer Applications in Technology (IJCAT), Vol. 13, No. 1/2, 2000
Abstract: The concept and implementation of active structures presents significant computational challenges. At the design stage, an active structure requires that the structural control and structural optimisation computations be carried out simultaneously. In this paper, an algorithm, which has been developed for the design of active structures, is presented. Uncertainties in structural properties, and in the dynamic excitation must be considered for a successful design of an active structure. Uncertainties in the damping and modulus of elasticity of conventional structural members are represented using an ellipsoidal convex model. The dynamic excitation considered is an earthquake, whose uncertain characteristics are treated using an energy bound convex model. The use of the convex model, to account for uncertainties in both structural resistance and excitation, makes it possible to perform the optimisation of the structure in a time-independent fashion, which results in significant computational savings. A simulated annealing algorithm is used to perform the optimisation, which improves the chances of obtaining a global minimum design.
Online publication date: Sun, 13-Jul-2003
If you are not a subscriber and you just want to read the full contents of this article, buy online access here.Complimentary Subscribers, Editors or Members of the Editorial Board of the International Journal of Computer Applications in Technology (IJCAT):
Login with your Inderscience username and password:
Want to subscribe?
A subscription gives you complete access to all articles in the current issue, as well as to all articles in the previous three years (where applicable). See our Orders page to subscribe.
If you still need assistance, please email firstname.lastname@example.org