نتایج جستجو برای: stiff problems
تعداد نتایج: 603461 فیلتر نتایج به سال:
abstract global financial crisis has created too many problems in relations among governments. among these problems, the issue of global monetary management, more than every time in the past four decades, has been moved in the center of international economic attentions. a problem which is specially known with the monetary hostility between united states and public republic of china. where ar...
Friction problems involving "dry" or "static" friction can be difficult to solve numerically due to the existence of discontinuities in the differential equations appearing in the righthand side. Conventional methods only give first-order accuracy at best; some methods based on stiff solvers can obtain high order accuracy. The previous method of the author [16] is extended to deal with friction...
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This article presents two regularization techniques for systems of state-dependent neutral delay differential equations which have a discontinuity in the derivative of the solution at the initial point. Such problems have a rich dynamics and besides classical solutions can have weak solutions in the sense of Utkin. Both of the presented techniques permit the numerical solution of such problems ...
This paper examines differences in performances of a range of torsionally stiff and flexible single story buildings designed with the provisions of Iranian Standard 2800. Seismic nonlinear dynamic time history behavior of eight building models subjected to seven horizontal bi-directional design spectra compatible ground motions are investigated. These models cover a wide range of very torsional...
Design and Validation of a Numerical Problem Solving Environment for Ordinary Differential Equations
In the last decade, two distinct directions have emerged in the use of Ordinary Differential Equation (ODE) solver software (Enright ). These are Large Scale Scientific Computation on workstations or large mainframe computers and Problem Solving Environments (PSE’s) on personal computers. Most practicing engineers and scientists, as well as engineering and science students, use numerical softwa...
with the increasing population and the need for more food, as well as with the development of science and technology, human approach to unnatural and often chemical inputs to increase agricultural production has been a great expansion and problems such as increased cancers, chronic diseases has created environmental pollution. implementation of organic organic is a solution to these problems . ...
The numerical solution of boundary value problems for certain stiff ordinary differential equations is studied. The methods developed use singular perturbation theory to construct approximate numerical solutions which are valid asymptotically; hence, they have the desirable feature of becoming more accurate as the equations become stiffer. Several numerical examples are presented which demonstr...
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