Calculus of Variations and Geometric Measure Theory

M. Froli - G. Royer Carfagni

A mechanical model for the elastic-plastic behavior of metallic bars

created by royercarfagni on 25 Apr 2016


Published Paper

Inserted: 25 apr 2016

Journal: International Journal of Solids and Structures
Volume: 37
Number: 29
Pages: 3901-3918
Year: 2000
Links: sciencedirect


A simple mechanical model, which consists of a particular assemblage of elementary units composed of elastic springs and frictional sliding blocks, appears suitable for describing the various aspects of the elastic-plastic behavior of steel bars in standard tensile tests: oscillations in the average stress-strain curve, the distinction between local and global responses, instability due to the transition from an upper to a lower yield point, the spread of plastic deformation, strain-hardening behavior, elastic unloading and the influence of loading-device stiffness.

Keywords: elastoplasticity, friction, plastic deformation, steel, strain hardening, stress analysis, tensile testing