Numerical integration of a spall-damage viscoplastic constitutive model in a one-dimensional wave propagation code
A description is given of the incorporation of a model for spall damage in ductile metals into the WONDY one-dimensional Lagrangian wavecode. The constitutive equations modeling the thermomechanical behavior of the damaged viscoplastic material are given as a system of seven first order ordinary differential equations. In any zone-cycle, these equations are integrated by the variable order, variable step Adams-method code, STEP1. Sample calculations for a plane impact case illustrate the interaction of the accumulating damage with the stress wave. Included are brief parameter studies which indicate the dependence of the damage on the viscoplastic model. Back surface velocity histories are compared with experimental records.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- DOE Contract Number:
- AT(29-1)-789
- OSTI ID:
- 7157055
- Report Number(s):
- SAND-76-0061
- Country of Publication:
- United States
- Language:
- English
Similar Records
Numerical integration of the equations governing a normal mode linear piezoelectric transducer with an inductive-resistive load. [WONDY code]
Constitutive modeling of viscoplastic damage in solder material
Related Subjects
ALUMINIUM
IMPACT SHOCK
SOLIDS
EQUATIONS
LAGRANGIAN FUNCTION
METALS
ONE-DIMENSIONAL CALCULATIONS
PLASTICS
SHOCK WAVES
WAVE PROPAGATION
ELEMENTS
FUNCTIONS
PETROCHEMICALS
PETROLEUM PRODUCTS
360103* - Metals & Alloys- Mechanical Properties
360403 - Materials- Polymers & Plastics- Mechanical Properties- (-1987)