Identification of the damping properties of orthotropic composite materials using a mixed numerical experimental method

被引:47
作者
DeVisscher, J
Sol, H
DeWilde, WP
Vantomme, J
机构
[1] FREE UNIV BRUSSELS, DEPT STRUCT ANAL, B-1050 BRUSSELS, BELGIUM
[2] KONINKLIJKE MIL SCH, DEPT CIVIL ENGN, B-1000 BRUSSELS, BELGIUM
关键词
material characterization; complex moduli; vibrations; modal parameters; material damping;
D O I
10.1023/A:1008859102544
中图分类号
TB33 [复合材料];
学科分类号
摘要
A mixed numerical experimental approach is the basis of a new method for the identification of the material damping properties of fibre reinforced polymers, which provides an answer to many problems encountered in experimental damping characterization. Experimental modal parameters, measured on a plate specimen, are compared with corresponding results from a numerical calculation, thus allowing to determine the stiffness and damping properties of the material. The relation between the modal parameters (structural parameters) and the material parameters, is obtained by using a numerical model of the specimen in combination with the modal strain energy method. In the first part of this paper, the complex moduli are introduced as measures for both material stiffness and damping and the relation between these complex moduli and the modal parameters of a thin plate specimen is derived. Next, the practical procedure of the mixed numerical experimental method is presented, followed by a procedure for estimating the reliability of the obtained results. Finally, two examples are discussed in which all the independent material damping properties are identified as functions of frequency.
引用
收藏
页码:13 / 33
页数:21
相关论文
共 11 条
[1]   DYNAMIC PROPERTIES OF UNIDIRECTIONAL FIBER REINFORCED COMPOSITES IN FLEXURE AND TORSION [J].
ADAMS, RD ;
BACON, DGC .
JOURNAL OF COMPOSITE MATERIALS, 1973, 7 (JAN) :53-67
[2]   EFFECT OF FIBER DIAMETER ON DYNAMIC PROPERTIES OF GLASS-FIBER-REINFORCED POLYESTER RESIN [J].
ADAMS, RD ;
SHORT, D .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1973, 6 (09) :1032-1039
[3]  
ADAMS RD, 1991, P INT C DUR POL BAS, P364
[5]  
Christensen R., 1971, J. Appl. Mech., V38, P720, DOI [10.1115/1.3408900, DOI 10.1115/1.3408900]
[6]  
DEVISSCHER J, 1993, MANUAL USE RESONAL 2
[7]  
DEVISSCHER J, 1995, THESIS VRIJE U BRUSS
[8]   FORCED-VIBRATION TECHNIQUE FOR MEASUREMENT OF MATERIAL DAMPING [J].
GIBSON, RF ;
PLUNKETT, R .
EXPERIMENTAL MECHANICS, 1977, 17 (08) :297-302
[9]  
SOL H, 1989, MANUAL USE RESONAL 1
[10]  
SOL H, 1986, THESIS VRIJE U BRUSS