Thesis supervisor: Majid Movahedi Rad
Location of studies (in Hungarian): Széchenyi István University Abbreviation of location of studies: SZE
Description of the research topic:
Structures of mechanical engineering for instance power plants, reactors, pressure vessels, etc. or civil engineering for instance trusses, frames, grids, bridge decks etc. are exposed to variable loading, particularly cyclic or repeated loading. In these situations the step-by-step elastic-plastic calculation is somewhat very costly in computing times. The most efficient way to handle the problem is to apply the shakedown and plastic limit methods. These methods are based on experimental facts obtained from realistic structures or laboratory specimen. They offers a direct method to perform the analysis of the problems.
One of the main requirement of elasic-plastic analyses and design processes is take into consideration the plastic residual deformations of the structures, however the plastic limit and shakedown methods give no information concerning the amount of the plastic displacements, and consequently residual strains cumulate in the structures. In this study the complementary strain energy of the residual forces is considered as an overall criterion of the plastic behaviour of the structures and the residual strains are constrained by applying a limit for the amount of this energy.
The applicability of nonlinear programming methods to this kind of problem proposed in the last decades. The principle of the method is widely exposed in the literature. The aim of this research work is to present a simple, practical and automatic procedure for the numerical elastic-plastic analysis and design of structures under both proportional and repeated loadings.
Deadline for application: 2019-04-30
2024. IV. 17. ODT ülés Az ODT következő ülésére 2024. június 14-én, pénteken 10.00 órakor kerül sor a Semmelweis Egyetem Szenátusi termében (Bp. Üllői út 26. I. emelet).
Login
