Numerical investigation of the elastic-plastic linear hardening stress-strain state of the frame element cross-section. Issue 3 (2nd July 2016)

• Record Type: Journal Article
• Authors: Grigusevičius, Andrius; Blaževičius, Gediminas
• Is Part Of: Engineering structures and technologies. Volume 8:Issue 3(2016)
• Page Start: 94
• Page End: 100
• Publication Date: 2016-07-02
• Subjects: linear hardening -- rectangular cross-section -- combined effect of bending moment and axial force -- stress-strain state -- MATLAB implementation; Structural engineering -- Periodicals; Structural engineering -- Research -- Periodicals; 624.105
• DOI: 10.3846/2029882X.2016.1217796
• Languages: English
• ISSNs: 2029-882X

Abstract

Abstract: The aim of this paper is to present a solution algorithm for determining the frame element crosssection carrying capacity, defined by combined effect of bending moment and axial force. The distributions of stresses and strains inside a cross-section made of linearly hardening material are analysed. General nonlinear stress-strain dependencies are composed. All relations are formed for rectangular cross-section for all possible cases of combinations of axial force and bending moment. To this end, five different stress-strain states are investigated and four limit axial force values are defined in the present research. The nonlinear problem is solved in MATLAB mathematical software environment. Stress-strain states in the cross-sections are investigated in detail and graphically analysed for two numerical experiments.