Improved kinematic options in ALEGRA.

Technical Report · 01 December 2003

DOI:https://doi.org/10.2172/918209· OSTI ID:918209

Farnsworth, Grant V; Robinson, Allen Conrad

Algorithms for higher order accuracy modeling of kinematic behavior within the ALEGRA framework are presented. These techniques improve the behavior of the code when kinematic errors are found, ensure orthonormality of the rotation tensor at each time step, and increase the accuracy of the Lagrangian stretch and rotation tensor update algorithm. The implementation of these improvements in ALEGRA is described. A short discussion of issues related to improving the accuracy of the stress update procedures is also included.

• Research Organization: Sandia National Laboratories
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 918209
• Report Number(s): SAND2003-4510
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
97 MATHEMATICS AND COMPUTING
A CODES
ALGORITHMS
COMPUTERIZED SIMULATION
HIGH ENERGY PHYSICS
LAGRANGIAN FUNCTION
PARTICLE KINEMATICS
ROTATION