A numerical analysis of the rupture of powder materials under the power impact influence
Abstract
An analytical technique is employed to study the dynamical rupture of powder materials at normal and high temperatures due to power impacts. The thermoplastic model incorporates expressions for the inhomogeneity and anisotropy of the material properties and temperature dependence. The finite-element formulation utilizes strain-displacement expressions and variables for elastic, plastic, rheological, temperature, and 'phase' deformations. The formulation is applied to the study of dispersion processes of axisymmetrical particles for six load configurations. The results give the forms, sizes, and number of ultradispersional particles as well as the basic parameters of the kinetics of these processes. The present finite-element formulation is of interest to the study of the dynamical processes of the rupture of powder materials under power-impact influences.
- Publication:
-
Computers and Structures
- Pub Date:
- July 1992
- Bibcode:
- 1992CoStr..44..481V
- Keywords:
-
- Equilibrium Equations;
- Fracture Strength;
- High Temperature Tests;
- Impact Loads;
- Impact Tests;
- Metal Powder;
- Dynamic Loads;
- Finite Element Method;
- Powder Metallurgy;
- Room Temperature;
- Structural Mechanics