Stability and accuracy of differencing methods for viscoplastic models in wavecodes
Journal Article
·
· Journal of Computational Physics; (United States)
- Sandia National Labs., Albuquerque, NM (United States)
The numerical stability and truncation error of a family of differencing schemes for viscoplastic constitutive relations in wavecodes is investigated. A von Neumann stability analysis is performed for a one-dimensional model problem. This analysis identifies two differencing methods that have no restriction on the time step size beyond the usual Courant-Friedrichs-Lewy condition. One of these methods is first-order accurate, and the other is second-order accurate. Implementation of one of these methods in the three-dimensional wavecode CTH is discussed.
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6633203
- Journal Information:
- Journal of Computational Physics; (United States), Journal Name: Journal of Computational Physics; (United States) Vol. 104:1; ISSN JCTPAH; ISSN 0021-9991
- Country of Publication:
- United States
- Language:
- English
Similar Records
Stability and accuracy of differencing schemes for viscoplastic models in wavecodes
Von Neumann stability of the WONDY wavecode for thermodynamic equations of state
Hydrocode subcycling stability
Technical Report
·
Thu Feb 28 23:00:00 EST 1991
·
OSTI ID:5966023
Von Neumann stability of the WONDY wavecode for thermodynamic equations of state
Technical Report
·
Mon Oct 31 23:00:00 EST 1977
·
OSTI ID:5299156
Hydrocode subcycling stability
Journal Article
·
Wed Jul 01 00:00:00 EDT 1981
· Math. Comput.; (United States)
·
OSTI ID:5982890
Related Subjects
36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
661300 -- Other Aspects of Physical Science-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
COMPUTER CALCULATIONS
DIFFERENTIAL EQUATIONS
DUCTILITY
ELEMENTS
EQUATIONS
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
METALS
ONE-DIMENSIONAL CALCULATIONS
PLASTICITY
TENSILE PROPERTIES
TENSORS
VISCOSITY
360103* -- Metals & Alloys-- Mechanical Properties
661300 -- Other Aspects of Physical Science-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
COMPUTER CALCULATIONS
DIFFERENTIAL EQUATIONS
DUCTILITY
ELEMENTS
EQUATIONS
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
METALS
ONE-DIMENSIONAL CALCULATIONS
PLASTICITY
TENSILE PROPERTIES
TENSORS
VISCOSITY