ON DAMPING MECHANISMS IN BEAMS

被引：211

作者：

BANKS, HT

INMAN, DJ

机构：

[1] BROWN UNIV,CTR CONTROL SCI,DIV APPL MATH,PROVIDENCE,RI 02912

[2] SUNY BUFFALO,DEPT MECH & AEROSP ENGN,MECH SYST LAB,BUFFALO,NY 14260

来源：

JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME | 1991年 / 58卷 / 03期

关键词：

D O I：

10.1115/1.2897253

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A partial differential equation model of a cantilevered beam with a tip mass at its free end is used to study damping in a composite. Four separate damping mechanisms consisting of air damping, strain rate damping, spatial hysteresis, and time hysteresis are considered experimentally. Dynamic tests were performed to produce time histories. The time history data is then used along with an approximate model to form a sequence of least squares problems. The solution of the least squares problem yields the estimated damping coefficients. The resulting experimentally determined analytical model is compared with the time histories via numerical simulation of the dynamic response. The procedure suggested here is compared with a standard modal damping ratio model commonly used in experimental modal analysis.

引用

页码：716 / 723

页数：8

共 18 条

[1]

[Anonymous], 2004, DYNAMICS STRUCTURES

[2]

BANKS H., 1989, ESTIMATION TECHNIQUE

[3]

BANKS HT, 1986, MAT APL COMPUT, V5, P139

[4]

BANKS HT, 1988, CONTR-THEOR ADV TECH, V4, P73

[5] CUBIC SPLINE APPROXIMATION TECHNIQUES FOR PARAMETER-ESTIMATION IN DISTRIBUTED SYSTEMS [J].

BANKS, HT ;

CROWLEY, JM ;

KUNISCH, K .

IEEE TRANSACTIONS ON AUTOMATIC CONTROL, 1983, 28 (07) :773-786

[6]

BANKS HT, 1989, MAT APL COMPUT, V8, P101

[7]

BANKS HT, 1987, 26TH P IEEE C DEC CO, V2, P1392

[8]

BANKS HT, 1988, 27TH P IEEE C DEC CO, P1674

[9]

BANKS HT, 1989, ICASE8964 NASA LANGL

[10]

Blevins RD., 2001, FLOW INDUCED VIBRATI

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