✦ LIBER ✦

CANCELLATION OF MASS-LOADING EFFECTS OF TRANSDUCERS AND EVALUATION OF UNMEASURED FREQUENCY RESPONSE FUNCTIONS

✍ Scribed by J.M.M. SILVA; N.M.M. MAIA; A.M.R. RIBEIRO

Publisher: Elsevier Science
Year: 2000
Tongue: English
Weight: 348 KB
Volume: 236
Category: Article
ISSN: 0022-460X
DOI: 10.1006/jsvi.1999.2993

No coin nor oath required. For personal study only.

✦ Synopsis

The problem of the cancellation of mass-loading e!ects of transducers in experimental structural dynamic analysis is addressed. A generalized solution based upon dynamic coupling and uncoupling of substructures is presented. It is shown that it is possible to solve the problem, no matter where the extra loading masses are located, by means of a series of relatively straightforward calculations. It is also shown that one can obtain frequency response functions (FRFs) without having to undertake the corresponding measurements. Up to now, the problem of obtaining the dynamic properties of all the structure FRF curves has only been considered possible provided the complete FRF matrix has been measured. The purpose of this paper is to contribute to solving this problem. In fact, the technique developed for cancellation of mass-loading e!ects is shown to also allow for the evaluation of the complete FRF matrix. A simple numerical example is presented to illustrate the good theoretical performance of the method. The same example is extended to incorporate noise, simulating an experimental situation, and it is shown that the technique is highly sensitive to measurement inaccuracies and that further work is necessary in order to solve this di$culty. A possible solution to improve the results is presented and discussed.

2000 Academic Press

📜 SIMILAR VOLUMES

Evaluation of natural vibration frequenc

Evaluation of natural vibration frequency and buckling loading of bending bar by searching zeros of a target function

✍ Chen, R. S. 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 131 KB

In this paper, the problem for evaluating the eigenvalues in the buckling problem and the natural vibration problem of the bending bar is reduced to ®nding zeros of a function, which is called the target function To in this paper. The explicit forms of the target functions can be obtained for all po

Functionalization of magnetic nanopartic

Functionalization of magnetic nanoparticles with organic molecules: Loading level determination and evaluation of linker length effect on immobilization

✍ Balasubramanian Srinivasan; Xuefei Huang 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 356 KB

ON THE FREQUENCY RESPONSE FUNCTION OF A

ON THE FREQUENCY RESPONSE FUNCTION OF A DAMPED CANTILEVER SIMPLY SUPPORTED IN-SPAN AND CARRYING A TIP MASS

✍ M. GÜRGÖZE; H. EROL 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 137 KB

This paper deals with the determination of the frequency response function of a cantilevered Bernoulli}Euler beam which is viscously damped by a single damper. The beam is simply supported in-span and carries a tip mass. The frequency response function is obtained through a formula that was establis

The effect of pallet connection stiffnes

The effect of pallet connection stiffness, deck stiffness and static load level on the resonant response of pallet decks to vibration frequencies occurring in the distribution environment

✍ Timothy G. Weigel; Marshall S. White 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 394 KB 👁 2 views

This paper summarizes the results of a preliminary study of the relationship between pallet design and the resonant response of pallet decks to sinusoidal vibration. Sine sweep frequency vibration tests between 3 Hz and 50 Hz were conducted to determine the effect of pallet deckboard stiffness, join