Nested lumped-parameter models for foundation vibrations
Dyn. 2004; 33:1051–1058 (DOI: 10.1002/eqe.382). SHORT COMMUNICATION. Nested lumped-parameter models for foundation vibrations. Wen-Hwa Wu. ∗;†.
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Modal Lumped Parameter Models for Representing Frequency
Keywords: soil-structure interaction, lumped parameter models, impedance functions. 1. ...... Nested Lumped-parameter Models for Foundation Vibrations.
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Simple Models of Foundation-Soil Interactions - IJET
foundation-soil system using the optimal equivalent model are compared with those obtained ... Index Terms—Foundation vibration, lumped-parameter model .....  W. H. Wu and W. H. Lee, “Nested lumped-parameter models for foundation ...
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A discrete model for response estimation of soil-structure systems
Jun 14, 2011 ... discrete model embedded foundation spectral matching .... and Lee HW (2004), “ Nested Lumped-parameter Models for Foundation Vibrations,” ...
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Combining Model-Based and Feature-Driven Diagnosis Approaches
ABSTRACT. Model-based diagnosis typically uses ... EMAs, however the vibration behavior is much too .... lumped-parameter modeling of energy- exchange ... extraction lays the foundation of a successful (accurate ... If multiple features.
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Application of a Highly Reduced One- Dimensional Spring - InTech
Feb 10, 2012 ... stiffness and damping of soil-foundation systems. Most IFs of .... Semi-empirical lumped parameter models proposed in previous studies [(a) Meek &. Veletsos .... The advantage of nested LPMs is that the configuration is ..... comprising a 1DSD are associated with the vibration modes of the original structural.
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Simplified model for torsional foundation vibrations
Lumped-parameter models;; Embedded foundation;; Soil–structure interaction .... Consider a simplified foundation-soil system undergoing torsional vibrations, simulated by an ...... Nested lumped-parameter models for foundation vibrations.
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Seismic soil-structure interaction in the time domain - University of
foundation are used to show the effect of the natural periods on the soil-structure ... yielding has a great influence on vibration frequency and vibration amplitude of both ... 184.108.40.206 The Fundamental Lumped-Parameter Model . . . . .. 17 ...... such as the nested surface model (Provest, 1977) or the Desai model (Desai, 1984). In.
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Generalized Bloch's theorem for viscous metamaterials: Dispersion
Jan 6, 2016 ... damping model for a given material or structure . ... We consider a nested 1D lumped parameter mass-spring-dashpot model similar to what is ...... by the National Science Foundation Graduate Research Fellowship Grant No. ....  J. Woodhouse, “Linear damping models for structural vibration,” ...
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Analysis of dynamic characteristics for a rotor system with pedestal
and analyzes the effects of the looseness parameters on its dynamic characteristics. ... vibration characteristics of a rotor-bearing system with pedestal looseness by ... looseness fault focus on simple Jeffcott rotor systems using the lumped mass ... In our study, a nonlinear finite element model of the rotor-bearing -foundation ...
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MATHEMATICAL MODELING AND CONTROL OF A
the Achievement Rewards for College Scientists Foundation for the financial support ... 2.4.5 Piezoelectric vibration suppression techniques . . . . . . . . . 18 ... 4.4 Collapsing nested two-port models to Norton circuits . . . . . . . . . 50 ...... model in conjunction with fictitious Hill muscle model lumped parameters. In this thesis, the ...
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Modeling and Control of Single-Link Flexible Arms with Lumped
control scheme consists of two nested feedback loops, an inner loop to control the ... the lumped-mass flexible arm model and which reproduces ..... faster than the dynamics of the vibration modes of the beam. .... payload changes by changing only one parameter in its nu- ..... L., 1986, Foundations of Optimal Control Theory,.
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Two-Dimensional Nonlinear Earthquake Response Analysis of a
(1997) and Goel and Chopra (1997) identified the vibration properties of a two- span ... (material) three-dimensional FE model of an actual soil-foundation-bridge ..... of Drucker-Prager nested yield surfaces with a common apex and different .... Material parameters for concrete in bridge piers, pile foundations and pile caps.
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Exploring Multiple Design Topologies Using Genetic Programming
both topology and component parameters; however, they typically allow only a .... Figure 4. a) Bond graph model b) Positional vibration of the load. Figure 5.
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Fluid–Structure Interaction-Based Biomechanical Perception Model
Nov 19, 2013 ... object's material reflected by vibration and its surface shape by a pneumatic nozzle array. Tactile ... 2013AA013803) and the National Science Foundation of China (No. ... shape of sine waves nested on each other at the junction of the .... previous linear and nonlinear model parameters are distributed to.
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Telescope Structure - Giant Magellan Telescope
generation of large telescopes (Magellan, LBT) have lowest vibration modes ... GMT will have multiple nested control loops for maintaining optical alignment as ... large diameter elevation journals for efficient load transfer to the foundation. ... Results of static, modal and dynamic modeling of the structure are .... Parameters.
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Kashif 1..9 - Laboratory for Computational Physiology - MIT
Apr 11, 2012 ... Model-Based Noninvasive Estimation of Intracranial Pressure from .... (11), skull vibrations (12), brain tissue resonance (13), or transcranial ... estimate. Examples are mappings involving nested regressions (22), ... tuning of parameters that relate the measured quantities to the ICP ... Our lumped model rep-.
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Construction and Experimental Implementation of a Model-Based
This work was supported by the National Science Foundation. (NSF) under Grant ... (a) PZT-based AFM stage and (b) nested minor loops in data collected at 0.1 Hz. .... sequently employed in Section IV to develop a lumped model for the stacked ... occurs. This fact can be used to establish an initial parameter value for when ...
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Advanced Professional Training - Klancek.si
First, the foundation of dynamic calculations is examined: the eigen ... for example vibrations due to machinery, can be calculated using these principles. ... From this equation it is clear that the calculation model created for a static analysis needs to be ... The lumped mass matrix offers considerable advantages with.
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Agenda - Altair
Mar 24, 2015 ... Run very large models with RADIOSS .... Multiple runs in a single analysis ... Vibration fatigue (shaker simulation) .... [M] is diagonal (lumped mass ... o Model parameters o 71,548 .... Altair Enterprise Foundation – Professional.
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