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FACULTY OF CIVIL ENGINEERING JOURNAL 18, 2009.y., pp. 43-54


EXPERIMENTAL – THEORETICAL ANALYSIS OF PARAMETERS THAT INFLUENCE THE RESISTANCE OF COMPRESSED STAINLESS STEEL HOLLOW MEMBERS
 
UDC: 669.14.018.8:544.032.2
CC-BY-SA 4.0 license
Author : Miroslav T. Bešević, Aleksandar S. Landović
 
 Summary:
 Stainless steel has characteristic that plastic deformation produce greater resistance from resistance obtained during proces of cold forming. Different patterns of loading during the proces of cold rolling produce typical distribution of strength enhancements and distribution of residual stress, which depends on manufacturing process. Material characteristics and residual stress distribution were examined for two types of cold formed section, which are: cold rolled section and press braked section. In analysis of section made from stainless steel resistance is taken from 0.2% stress proof test. Resistance also depends on magnitude of induced plastic deformation and temperature used during manufacturing process. Also, this paper deals with initial geometrical imperfections which are of great importance in thin wall cross section. Stainless steel shows different characteristics compared with carbon steel, such as anisotropy, pronounced response on cold forming process and different thermic characteristics.
 
 Keywords:
 Stainless steel, geometric imperfection, mechanical properties, residual stress, hollow section