Determining effective contact stiffness between striker and composite shell

An approach to determining the effective contact stiffness between a striker and composite shell is presented. The effective contact stiffness is obtained via impact tests in conjunction with an analytic impact function recently presented by the authors. The relationship between the effective contac...

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Bibliographic Details
Published in:Composite structures 1998-10, Vol.43 (2), p.137-145
Main Authors: Gong, S.W., Shim, V.P.W., Toh, S.L.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fracture mechanics (crack, fatigue, damage...)
Fracture mechanics, fatigue and cracks
Fundamental areas of phenomenology (including applications)
Measurement and testing methods
Measurement methods and techniques in continuum mechanics of solids
Physics
Solid mechanics
Structural and continuum mechanics
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Summary:An approach to determining the effective contact stiffness between a striker and composite shell is presented. The effective contact stiffness is obtained via impact tests in conjunction with an analytic impact function recently presented by the authors. The relationship between the effective contact stiffness and the contact coefficients defined by Hertzian contact laws is described. Impact tests are conducted on simply-supported glass/epoxy cylindrical and ogival shells. The effective contact stiffnesses for these shells impacted by a solid striker are obtained using the present method. In addition, effects of impact mass and impact velocity on the contact force are examined and discussed.
ISSN:0263-8223
1879-1085
DOI:10.1016/S0263-8223(98)00102-0