Results 241 to 250 of about 9,010,138 (290)

Extreme stiffness systems due to negative stiffness elements

American Journal of Physics, 2003
When an elastic object is pressed, we expect it to resist by exerting a restoring force. A reversal of this force corresponds to negative stiffness. If we combine elements with positive and negative stiffness in a composite, it is possible to achieve stiffness greater than (or less than) that of any of the constituents.
Y. C. Wang, R. S. Lakes
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Systemic Arterial Stiffness in Glaucoma Patients

Journal of Glaucoma, 2008
To investigate systemic arterial stiffness in glaucoma patients.One hundred and forty glaucoma patients and 121 control subjects were enrolled in the study. Among these subjects, 51 glaucoma patients [normal-tension glaucoma (NTG), 31; primary open angle glaucoma or ocular hypertension (POAG/OH): 20] and 61 control subjects without glaucoma, who ...
Tatsuya, Chiba, Nami, Chiba, Kenji, Kashiwagi   +2 more
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Convection Systems with Stiff Source Terms

Mathematical Models and Methods in Applied Sciences, 2003
The aim of this paper is the numerical treatment of some convection systems with stiff relaxation source-terms. We will first define the notion of stiffness for such systems and will select some prototypical and physical problems. We will introduce a new numerical method in order to solve accurately this type of systems.
Lorin, E., Seignole, V.
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Solving STIFF systems by Taylor series

Applied Mathematics and Computation, 1989
A new insight into the numerical solution of stiff systems of ODE's is brought by application of long Taylor series (up to 30 terms). Most of stiff problems are of the type where there is a linear ODE hidden within the stiff system of ODE's. When the hidden linear ODE is of order one, there is an exponential component in the solution.
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A stiff-cut splitting technique for stiff semi-linear systems of differential equations

Numerical Algorithms, 2023
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Tao Sun 0015, Hai-Wei Sun
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Stiff Mechanical System

2013
In the previous Chap. 5 we have seen how the spatial discretization of a flexible multibody system leads to a differential-algebraic equation in time. The partitioning into two types of state variables, namely, those for the gross motion, on the one hand, and those for the elastic deformations, on the other, quite often involves widely different time ...
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An Initialization Program for Separably Stiff Systems

SIAM Journal on Scientific and Statistical Computing, 1983
Initialization of a separably stiff system of ordinary differential equations consists of readjusting certain initial values, while holding the others fixed, in such a way that the solution of the system does not have an initial transient. This paper discusses the features of a FORTRAN program which solves the initialization problem. The algorithm used
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Contact Stiffness and Damping Estimation for Robotic Systems

The International Journal of Robotics Research, 2003
In this paper, we review and compare four algorithms for the identification of contact stiffness and damping during robot constrained motion. The intended application is dynamics modeling and simulation of robotic assembly operations in space. Accurate simulation of these tasks requires contact dynamics models, which in turn use contact stiffness and ...
D. Erickson, M. Weber, Inna Sharf
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Efficient semi-implicit schemes for stiff systems

Journal of Computational Physics, 2006
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Qing Nie, Yong-Tao Zhang, Rui Zhao
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Performance of a Stiff Support System in Soft Clay

Journal of Geotechnical and Geoenvironmental Engineering, 2002
The performance of an excavation support system for a subway station renovation project in Chicago and its effects on an adjacent, shallow-foundation supported building are presented.
FINNO R. J, BRYSON L. S, CALVELLO, Michele   +2 more
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