J. Phys. IV France 110 (2003) 305
Numerical simulation of dynamic TPB fracture test in a modified Hopkinson barJ. Loya, J. Fernandez-Saez and C. Navarro
Department of Continuum Mechanics and Structural Analysis, Carlos III University of Madrid Avda. de la Universidad 30, 28911 Leganés, Madrid, Spain
Dynamic three point bending fracture tests performed in a modified Hopkinson Bar are used to obtain material fracture properties (such as the fracture-initiation toughness) at high strain rates. This work presents a three-dimensional numerical analysis of the aforementioned tests, performed by the Finite Element Method, implemented in the commercial code ABAQUS. The relationship between the Stress Intensity Factor and the Crack Mouth Opening Displacement was examined and compared with the bidinensional one, The results indicate that the use of 2D plane strain solutions can underestimate the fracture properties.
© EDP Sciences 2003