Elastic Shakedown and Adaptation of the Response in Laterally Impacted Steel Tubes

Autor:	Mostafa Zeinoddini, G. A. R. Parke
Rok vydání:	2010
Předmět:	Materials science Mechanics of Materials business.industry Mechanical Engineering Computational Mechanics Steel tube General Materials Science Structural engineering business Adaptation (computer science) Shakedown
Zdroj:	International Journal of Damage Mechanics. 20:400-422
ISSN:	1530-7921 1056-7895
DOI:	10.1177/1056789509359675
Popis:	This article reports some interesting observations on the response of laterally impacted steel tubes, which in some respects have been considered to undergo an elastic shakedown. In an experimental study on the behavior of axially compressed tubes under lateral impacts, it has been noticed that after full development of plastic deformations in the impacted bodies, the structural system ceases to exhibit additional plastic responses. The impacted tubes then exhibit an elastic behavior. It has also been observed that the amplitude of the elastic excitations in the specimens becomes more restricted as the load configuration moves close to a dynamic failure state. With load conditions quite close to the dynamic failure limit, almost no elastic excitation has been perceived from the impacted specimens. Additional numerical and analytical investigations have been carried out on impacted tubes, frames, and nonlinear single-degree of freedom systems and similar results have been obtained. Despite the noncyclic nature of the external loads in these impact cases, a phenomenon similar to elastic shakedown has been observed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eaec4f09dd23d6bba9ed8766706577d5 https://doi.org/10.1177/1056789509359675 Zobrazit plný text záznamu