A Critical Evaluation of Computer Subroutines for Solving Stiff Differential Equations.
Technical rept. 1 Sep 77-15 Oct 78,
CINCINNATI UNIV OH DEPT OF ENGINEERING SCIENCE
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A number of commonly available computer subroutines for solving differential equation systems are tested and compared for their ability to solve stiff systems. A stiff system is defined as either a system with widely separated eigenvalues or time constants or a system with diverging exponential terms which have small or zero coefficients due to a particular choice of initial conditions. For example, it is believed that the governing differential equations of large complex mechanical system models such as, human-bodycrash-victim simulation models, finite segment structural models, and large vibrating system models are frequently stiff.
- Numerical Mathematics
- Computer Programming and Software