Experimental and numerical study of strain-rate effects on the IFF fracture angle using a new efficient implementation of Puck’s criterion

2017 ◽  
Vol 181 ◽  
pp. 325-335 ◽  
Author(s):  
Daniel M. Thomson ◽  
Hao Cui ◽  
Borja Erice ◽  
Justus Hoffmann ◽  
Jens Wiegand ◽  
...  
Keyword(s):  
Strain Rate ◽  
Numerical Study ◽  
Efficient Implementation ◽  
Strain Rate Effects ◽  
Fracture Angle ◽  
Rate Effects

Analytical and Numerical Study of Early-Time Response in Pulse-Loaded Visco-Elastic Composites

2011 ◽  
Vol 82 ◽  
pp. 214-219
Author(s):  
Karl Micallef ◽  
Arash Soleiman-Fallah ◽  
Paul T. Curtis ◽  
Daniel J. Pope ◽  
Luke A. Louca
Keyword(s):  
Wave Propagation ◽  
Differential Equations ◽  
Strain Rate ◽  
Numerical Solutions ◽  
Numerical Study ◽  
Early Time ◽  
Hyperbolic Partial Differential Equations ◽  
Weighted Residual Method ◽  
Strain Rate Effects ◽  
Rate Effects

Hyperbolic partial differential equations with one space variable are used to investigate the longitudinal wave propagation through an elastic composite medium. A high order Lagrangian finite element is used to model the wave propagation and the weak-form Galerkin weighted residual method is adopted for solving the governing differential equations, viz., the one-dimensional wave equation which is extended to include damping and strain-rate effects. The numerical solutions are compared to analytical solutions (where they exist) and excellent temporal and spatial correlation is achieved, within 90-95% accuracy. It is found that damping leads to a decrease in peak stresses and strains by up to 11% for 5% of critical damping, even during the direct loading phase. It is shown that the inclusion of strain-rate did not have an effect on strains but led to an increase in stresses by almost 95%. The inclusion of both damping and strain-rate effects together increased stress values by up to 70% compared to the non-viscous cases.

Strain Rate Effects on Mechanical Stability of Retained Austenite in TRIP Sheet Steels

2006 ◽  
Author(s):  
Ildong Choi ◽  
Dongmin Son ◽  
Sung-joon Kim ◽  
David K. Matlock ◽  
John G. Speer
Keyword(s):  
Strain Rate ◽  
Retained Austenite ◽  
Mechanical Stability ◽  
Strain Rate Effects ◽  
Sheet Steels ◽  
Rate Effects
Sign in / Sign up

Export Citation Format

Share Document