ON EXTENSIONAL VIBRATION MODES OF ELASTIC RODS OF FINITE LENGTH WHICH INCLUDE THE EFFECT OF LATERAL DEFORMATION

1998 ◽  
Vol 215 (3) ◽  
pp. 577-586 ◽  
Author(s):  
Shankar Krishnaswamy ◽  
R.C. Batra
Keyword(s):  
Finite Length ◽  
Elastic Rods ◽  
Vibration Modes ◽  
Lateral Deformation

Interchain coupling and localized vibration modes in conjugated polymers of finite length

1997 ◽  
Vol 56 (20) ◽  
pp. 13162-13166 ◽  
Author(s):  
Shi-jie Xie ◽  
Jian-Hua Wei ◽  
De-Sheng Liu ◽  
Liang-Mo Mei ◽  
D. L. Lin
Keyword(s):  
Conjugated Polymers ◽  
Finite Length ◽  
Vibration Modes ◽  
Interchain Coupling

Asymptotic Behavior of Eigenvalues for Finite, Inhomogeneous Elastic Rods

1972 ◽  
Vol 39 (2) ◽  
pp. 595-597 ◽  
Author(s):  
Adnan H. Nayfeh
Keyword(s):  
Asymptotic Behavior ◽  
Finite Length ◽  
Free Vibrations ◽  
Elastic Rods ◽  
Elastic Rod ◽  
Elastic Parameters ◽  
Asymptotic Expressions

Asymptotic expressions for the eigenvalues and the corresponding eigenfunctions for the free vibrations of an inhomogeneous elastic rod with a finite length are derived. The derivation is based on the assumption that the elastic parameters and their derivatives vary continuously along the rod. A method which consists of a perturbation about the solutions of the homogeneous cases is used.

Optical vibration modes in Hg1-xZnxTe solid solutions near q=0

1989 ◽  
Vol 50 (21) ◽  
pp. 3223-3232 ◽  
Author(s):  
G. Le Bastard ◽  
R. Granger ◽  
S. Rolland ◽  
Y. Marqueton ◽  
R. Triboulet
Keyword(s):  
Solid Solutions ◽  
Vibration Modes ◽  
Optical Vibration

A two degrees of freedom comb capacitive-type accelerometer with low cross-axis sensitivity

2019 ◽  
Vol 13 (3) ◽  
pp. 5334-5346
Author(s):  
M. N. Nguyen ◽  
L. Q. Nguyen ◽  
H. M. Chu ◽  
H. N. Vu
Keyword(s):  
Degrees Of Freedom ◽  
Proof Mass ◽  
Vibration Modes ◽  
Electrode Structure ◽  
Element Analysis ◽  
Mechanical Coupling ◽  
Fully Differential ◽  
Mode Effects ◽  
The Finite Element Analysis ◽  
Cross Axis

In this paper, we report on a SOI-based comb capacitive-type accelerometer that senses acceleration in two lateral directions. The structure of the accelerometer was designed using a proof mass connected by four folded-beam springs, which are compliant to inertial displacement causing by attached acceleration in the two lateral directions. At the same time, the folded-beam springs enabled to suppress cross-talk causing by mechanical coupling from parasitic vibration modes. The differential capacitor sense structure was employed to eliminate common mode effects. The design of gap between comb fingers was also analyzed to find an optimally sensing comb electrode structure. The design of the accelerometer was carried out using the finite element analysis. The fabrication of the device was based on SOI-micromachining. The characteristics of the accelerometer have been investigated by a fully differential capacitive bridge interface using a sub-fF switched-capacitor integrator circuit. The sensitivities of the accelerometer in the two lateral directions were determined to be 6 and 5.5 fF/g, respectively. The cross-axis sensitivities of the accelerometer were less than 5%, which shows that the accelerometer can be used for measuring precisely acceleration in the two lateral directions. The accelerometer operates linearly in the range of investigated acceleration from 0 to 4g. The proposed accelerometer is expected for low-g applications.

High-Precision Positioning of Galvano Scanners by Structural Design Using Node of Vibration Modes

2011 ◽  
Vol 131 (3) ◽  
pp. 275-282
Author(s):  
Kenta Seki ◽  
Hiroaki Matsuura ◽  
Makoto Iwasaki ◽  
Hiromu Hirai ◽  
Soichi Tohyama
Keyword(s):  
High Precision ◽  
Structural Design ◽  
Vibration Modes ◽  
Precision Positioning

Tire Vibration Modes and Effects on Vehicle Ride Quality

1993 ◽  
Vol 21 (1) ◽  
pp. 23-39 ◽  
Author(s):  
R. W. Scavuzzo ◽  
T. R. Richards ◽  
L. T. Charek
Keyword(s):  
Finite Element ◽  
Finite Element Modeling ◽  
Operating Conditions ◽  
Modal Testing ◽  
Ride Quality ◽  
Vibration Modes ◽  
Inflation Pressure ◽  
Passenger Cars ◽  
Element Modeling ◽  
Road Surfaces

Abstract Tire vibration modes are known to play a key role in vehicle ride, for applications ranging from passenger cars to earthmover equipment. Inputs to the tire such as discrete impacts (harshness), rough road surfaces, tire nonuniformities, and tread patterns can potentially excite tire vibration modes. Many parameters affect the frequency of tire vibration modes: tire size, tire construction, inflation pressure, and operating conditions such as speed, load, and temperature. This paper discusses the influence of these parameters on tire vibration modes and describes how these tire modes influence vehicle ride quality. Results from both finite element modeling and modal testing are discussed.

Sign in / Sign up

Export Citation Format

Share Document