Modal response of a composite plate due to impact
- Univ. of Manitoba, Winnipeg (Canada)
- Univ. of Colorado, Boulder, CO (United States)
Dynamic response of a fiber reinforced composite plate to an impact load has been studied in this paper. The analysis technique is based on the representation of the elastodynamic field in the plate in terms of guided wave-modes supported by the plate For this purpose, the exact dispersion equation governing the modes has been solved by the Muller`s method, using as starting estimates the wavenumbers that solve the eigenvalue problem obtained by employing a Rayleigh-Ritz type procedure. This avoids the problem of a complicated (and sometimes unreliable) root search needed to solve the transcendental dispersion equations. It is shown that this procedure assures computation of a sufficient number of modes (propagating, nonpropagating, or evanescent) with desirable accuracy. The dynamic field in the plate is then expressed as a sum of the modes. Attention has been focused here on the flexural motion of the plate. Numerical results are presented to show the frequency dependence of the shear stress distribution in the plate.
- OSTI ID:
- 175418
- Report Number(s):
- CONF-950686-; TRN: 95:006111-0393
- Resource Relation:
- Conference: Joint applied mechanics and materials summer meeting, Los Angeles, CA (United States), 28-30 Jun 1995; Other Information: PBD: 1995; Related Information: Is Part Of AMD - MD `95: Summer conference; PB: 520 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
A 2.5D boundary element formulation for modeling damped waves in arbitrary cross-section waveguides and cavities
Finite elements modelling of scattering problems for flexural waves in thin plates: Application to elliptic invisibility cloaks, rotators and the mirage effect