Results 31 to 40 of about 24,167,704 (144)

Models and methods for dynamic response of 3D flexible and rigid pavements to moving loads: A review by representative examples

Journal of Road Engineering
This work reviews models and methods for determining the dynamic response of pavements to moving vehicle loads in the framework of continuum-based three dimensional models and linear theories.
Edmond V. Muho, Niki D. Beskou, Jiang Qian   +2 more
doaj   +1 more source

Robust controller designs for second-order dynamic system: A virtual passive approach [PDF]

, 1990
A robust controller design is presented for second-order dynamic systems. The controller is model-independent and itself is a virtual second-order dynamic system.
Phan, Minh, Juang, Jer-Nan, JER-NAN JUANG, MINH PHAN   +3 more
core   +1 more source

Cross‐Entropy of Power Spectral Density Function: A Modal Identification Framework

Earthquake Engineering &Structural Dynamics, Volume 55, Issue 12, Page 3012-3028, 10 October 2026.
ABSTRACT The power spectral density (PSD) function of measured structural response contains a significant amount of information, including the modal parameters (natural frequencies, damping ratios). Output‐only system identification or modal identification technique can be used for extracting such modal parameters from the measured response or its ...
Su‐Hong Kim, Jae‐Seung Hwang, Dae‐Kun Kwon, Ahsan Kareem   +3 more
wiley   +1 more source

The Response of an Elastic Disk With a Moving Mass System

, 1973
An investigation of the dynamic response of a circular elastic disk excited by a moving mass-spring-dashpot system is presented. Three distinct types of unstable response are observed. A stiffness instability region occurs immediately above each critical
W. D. Iwan, K. J. Stahl
core   +1 more source

How Much Physics Should a Neural Network Know? Thermodynamics‐Informed Neural Networks for Rock Constitutive Modeling With Epistemic Uncertainty

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 5, October 2026.
Abstract Machine learning offers a flexible route to constitutive modeling, with two emergent questions for geoscience applications: what level of thermodynamic constraint should be embedded in the network architecture, and how should predictive uncertainty be quantified when extrapolating from laboratory to field conditions? We address both challenges
Kangan Li, Tushar Mittal, Benjamin K. Holtzman, Seth Saltiel   +3 more
wiley   +1 more source

Analysis of an Undamped Mass-Spring System with Generalized Piecewise Constant Argument

, 2023
In this study, we consider an undamped mass-spring system that experiences piecewise constant forces and analyze the solutions of this system. We investigate the solutions of undamped mass-spring system by using the method of steps.
Özkan, Zekeriya, Çinçin, Duygu Aruğaslan, Akhmet, Marat, Zekeriya Ozkan, Marat Akhmet, Duygu Arugaslan, Cincin   +6 more
core   +1 more source

Semi‐analytical solution for the stability of deep vertical shaft considering time‐dependent rock‐structure interaction

Deep Underground Science and Engineering, Volume 5, Issue 3, Page 767-786, September 2026.
A novel cavity contraction solution and multilayer shaft wall model were developed to analyze deep shaft stability, considering rock viscosity, support structures, and water pressure, with successful validation through a Hulusu Coal Mine case study.
Bin Chen, Pinqiang Mo, Zhao Lu, Lianfei Kuang, Qiang Zhang, Abolfazl Eslami   +5 more
wiley   +1 more source

Eulerian-Lagrangian simulation of bubble coalescence in bubbly flow using the spring-dashpot model

, 2017
The Eulerian-Lagrangian simulation of bubbly flow has the advantage of tracking the motion of bubbles in continuous fluid, and hence the position and velocity of each bubble could be accurately acquired.
Xue, Jing, Ge, Wei, Chen, Feiguo, Yang, Ning   +3 more
core   +2 more sources

Dynamic Instability of Pile Foundations Under Real Earthquake Excitation

Earthquake Engineering and Resilience, Volume 5, Issue 3, Page 400-410, September 2026.
This paper investigates the dynamic instability of pile foundations subjected to real seismic excitation through numerical analysis. A novel numerical method is proposed for evaluating the dynamic instability of systems whose equation coefficients are available only as digital discrete data. Parametric studies is conducted to investigate the effects of
Jian Deng, Diego Galvez
wiley   +1 more source

Deformation Patterns and Rupture Mechanisms of the Longitudinal Valley Fault in Eastern Taiwan: Insights From Three‐Dimensional Discrete Element Modeling

Earth and Space Science, Volume 13, Issue 9, September 2026.
Abstract Active faults exhibit complex geometric features, with rupture processes controlled by the coupled effects of tectonic loading, fault geometry, and internal displacement heterogeneity. To elucidate the interrelationship between long‐term deformation, stress redistribution, and rupture evolution, we constructed a three‐dimensional numerical ...
X. F. Guo, Y. Aoki, J. H. Li
wiley   +1 more source