LARGE DEFLECTION OF ELASTIC COMPOSITE CIRCULAR SPRINGS UNDER UNIAXIALCOMPRESSION

Citation
Pc. Tse et al., LARGE DEFLECTION OF ELASTIC COMPOSITE CIRCULAR SPRINGS UNDER UNIAXIALCOMPRESSION, International journal of non-linear mechanics, 29(5), 1994, pp. 781-798
Citations number
15
Categorie Soggetti
Mechanics
ISSN journal
00207462
Volume
29
Issue
5
Year of publication
1994
Pages
781 - 798
Database
ISI
SICI code
0020-7462(1994)29:5<781:LDOECC>2.0.ZU;2-2
Abstract
The equivalent flexural rigidity approach for large deflection analysi s has been applied to orthotropic midplane symmetric laminated circula r rings under uniaxial compression. The analytical approach incorporat es the exact expression of the moment-curvature relationship for the b ending of symmetric laminated beams. Non-linear spring behaviour is ob tained and verified by experimental testings. The circumferential stra in distributions around the rings are compared with that obtained by a small deflection strain energy approach and found to provide a more a ccurate prediction, especially at high loads where the deflection is l arge. Finite element calculations performed with some of the ring mode ls show good correlation with both analytical and experimental results and the distribution of circumferential strains at increased external load is illustrated.