FraMCoS 9 2016 Berkeley, California, USA

Simulation of Dynamic Fracture of Concrete with Damaged Viscoelasticity and Retarded Damage

Many aspects of the strain-rate effect observed for quasi-brittle materials like concrete are still under discussion. A triaxial material model is described covering the physical mecha- nisms presumably causing the strain-rate effect. Its basic effects on stress-strain behavior are shown…

First page of: Simulation of Dynamic Fracture of Concrete with Damaged Viscoelasticity and Retarded Damage
Year 2016
File Size 3.3 MB
Download PDF (3.3 MB)

Abstract

Many aspects of the strain-rate effect observed for quasi-brittle materials like concrete are still under discussion. A triaxial material model is described covering the physical mecha- nisms presumably causing the strain-rate effect. Its basic effects on stress-strain behavior are shown with a homogeneous one-element setup. Furthermore, it is applied for the simulation of a biaxial Split-Hopkinson-Bar setup and validated against corresponding experimental results. The analysis of simulation results shows a complex behavior highly variable in space and time.