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A numerical solution and evaluation of dynamic stiffness of pile groups and comparison to experimental results
(Elsevier, 2017)
A number of solutions and computer programs are already available to determine the dynamic stiffness of complete pile foundations, assuming linear elastic soil behavior and perfect bonding between the piles and the surrounding ...
Power Secant Method applied to natural frequency extraction of Timoshenko beam structures
(LATIN AMER J SOLIDS STRUCTURES, 2010)
This work deals with an improved plane frame formulation whose exact dynamic stiffness matrix (DSM) presents, uniquely, null determinant for the natural frequencies. In comparison with the classical DSM, the formulation ...
Influencia del amortiguamiento Inherente en la disipación de energía y en el desempeño de una estructura de acero
(Universidad de Cuenca, 2023-04-21)
One of the most critical parameters that define the behavior of a structure in the face of a
seismic movement is the inherent damping, which is the focus of this titling work, analyzing
the effect of its variation in the ...
Local Linearization-Runge-Kutta methods: a class of A-stable explicit integrators for dynamical systems
(Pergamon-Elsevier Science Ltd, 2013-02)
A new approach for the construction of high order A-stable explicit integrators for ordinary differential equations (ODEs) is theoretically studied. Basically, the integrators are obtained by splitting, at each time step, ...
Environmental effects on viscoelastic behavior of carbon fiber/PEKK thermoplastic composites
(Sage Publications Ltd, 2014-04-01)
In the last years, thermoplastic composites have been introduced as structural materials for high performance aerospace applications. However, these materials can present problems when exposed to moisture, temperature, and ...
Extracellular matrix signals as drivers of mitochondrial bioenergetics and metabolic plasticity of cancer cells during metastasis
(Frontiers Media SA, 2021)
The role of metabolism in tumor growth and chemoresistance has received considerable
attention, however, the contribution of mitochondrial bioenergetics in migration,
invasion, and metastasis is recently being understood. ...
Effect of soil structure interaction on the dynamic responses of base isolated bridges and comparison to experimental results
(Elsevier Ltd, 2018)
In this paper, the effect of soil structure interaction and base isolation on the dynamic characteristics of an instrumented bridge is examined using transfer functions and measured motions in the frequency domain. A three ...
Crack Detection and Dynamic Analysis of a Cracked Rotor with Soft Bearings Using Different Methods of Solution
(2019-01-01)
The ratio of bearing stiffness to the shaft stiffness has a significant impact on the lower frequencies, mode shapes and, consequently, the whirl orbits. Most works studying crack detection methods in rotating systems use ...
Environmental effects on viscoelastic behavior of carbon fiber/PEKK thermoplastic composites
(Sage Publications Ltd, 2014)
Dynamic Analysis of Modified Structural Systems
(1986-06)
A set of methods is developed to determine the changes in frequencies and mode shapes of a structure resulting from modifications of the structure. These modifications can involve an increase in the number of degrees of ...