Results 61 to 70 of about 21,453 (250)

A novel haptic model and environment for maxillofacial surgical operation planning and manipulation [PDF]

, 2012
This paper presents a practical method and a new haptic model to support manipulations of bones and their segments during the planning of a surgical operation in a virtual environment using a haptic interface. To perform an effective dental surgery it is
Arnez, Victor, Corney, Jonathan, Govea-Valladares, E., Hernandez, Ernesto, Li, Youhua, Lim, T., Villela, V., Yan, Xiu   +7 more
core   +1 more source

The second spectrum of Timoshenko beam theory—Further assessment [PDF]

Journal of Sound and Vibration, 2006
A review of contributions and views on the second spectrum of Timoshenko beam theory (TBT) over the past two decades, together with some new results, are presented. It is shown that the Timoshenko frequency equation factorises not solely for hinged–hinged end conditions, as is often claimed, but also for guided–guided and guided–hinged; these new cases
openaire   +3 more sources

Effective Material Stiffness in Curved Actuators

Advanced Intelligent Systems, EarlyView.
A new actuator effective material stiffness measurement method is created. It produces a new metric called shape actuation modulus with the potential to help design actuators. This method shows that the smaller the curvature of hinge‐shaped actuators, the stiffer they are.
Charles de Kergariou, David Correa, Adam W. Perriman, Fabrizio Scarpa   +3 more
wiley   +1 more source

Analytical modeling of spindle-tool dynamics on machine tools using Timoshenko beam model and receptance coupling for the prediction of tool point FRF [PDF]

, 2006
Regenerative chatter is a well-known machining problem that results in unstable cutting process, poor surface quality and reduced material removal rate.
Budak, Erhan, Erturk, A., Ertürk, A., Ozguven, H. N., Özgüven, H. N.   +4 more
core   +3 more sources

Vibration Characteristics of Piezoelectric Microbeams Based on the Modified Couple Stress Theory

Shock and Vibration, 2014
The vibration behavior of piezoelectric microbeams is studied on the basis of the modified couple stress theory. The governing equations of motion and boundary conditions for the Euler-Bernoulli and Timoshenko beam models are derived using Hamilton’s ...
R. Ansari, M. A. Ashrafi, S. Hosseinzadeh   +2 more
doaj   +1 more source

Experimental Modal Analysis‐Driven Gaussian Process Regression Modeling of Rectangular Steel Beams With Various Hole Geometries

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Understanding the dynamic behavior of structural components is crucial for optimizing performance and ensuring structural integrity. This study presents a new method that combines a systematic experimental investigation of four distinct hole geometries (circular, square, compact rectangular, and long rectangular) with varying hole counts, all ...
Amir Hossein Rabiee, Majid Rajaei, Mohammad Hossein Mahdavi Nasab, Parsa Shafiei   +3 more
wiley   +1 more source

Bending and Free Vibration Analysis of Nonlocal Functionally Graded Nanocomposite Timoshenko Beam Model Rreinforced by SWBNNT Based on Modified Coupled Stress Theory [PDF]

Journal of Nanostructures, 2013
In this article, the bending and free vibration analysis of functionally graded (FG) nanocomposites Timoshenko beam model reinforced by single-walled boron nitride nanotube (SWBNNT) using micro-mechanical approach embedded in an elastic medium is studied.
M. Mohammadimehr, M. Mahmudian-Najafabadi   +1 more
doaj   +1 more source

Dynamic Analysis of a Fiber-Reinforced Composite Beam under a Moving Load by the Ritz Method

Mathematics, 2021
This paper presents the dynamic responses of a fiber-reinforced composite beam under a moving load. The Timoshenko beam theory was employed to analyze the kinematics of the composite beam.
Şeref D. Akbaş, Hakan Ersoy, Bekir Akgöz, Ömer Civalek   +3 more
doaj   +1 more source

A Force‐Based Beam‐Column Element With Selective Gradient‐Inelasticity for Softening Materials in 3‐Dimensional Nonlinear Analysis

Earthquake Engineering &Structural Dynamics, Volume 55, Issue 1, Page 26-45, January 2026.
ABSTRACT Fiber‐based beam‐column elements featuring an effective material constitutive law with softening can capture the degrading response of structural members under extreme loading. However, these elements exhibit strain localization and mesh divergence, which impedes their accuracy.
Diego Isidoro Heredia Rosa, Albano de Castro e Sousa, Dimitrios G. Lignos, Arka Maity, Amit Kanvinde   +4 more
wiley   +1 more source

Free and Forced Vibrations of an Axially-Loaded Timoshenko Multi-Span Beam Carrying a Number of Various Concentrated Elements

Shock and Vibration, 2012
In the existing reports regarding free and forced vibrations of the beams, most of them studied a uniform beam carrying various concentrated elements using Bernoulli-Euler Beam Theory (BET) but without axial force. The purpose of this paper is to utilize
Yusuf Yesilce
doaj   +1 more source