A refined model for three-point bending of sandwich panels 2. Transverse stresses
| Autor: | V. V. Khitrov, I. G. Zhigun, V. A. Polyakov, R. P. Shlitsa |
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| Rok vydání: | 1998 |
| Předmět: |
Materials science
Polymers and Plastics Three point flexural test General Mathematics Sandwich panel Condensed Matter Physics Biomaterials Transverse plane Superposition principle Mechanics of Materials Solid mechanics Ceramics and Composites Slippage Composite material Sandwich-structured composite Stress concentration |
| Zdroj: | Mechanics of Composite Materials. 34:50-69 |
| ISSN: | 1573-8922 0191-5665 |
| DOI: | 10.1007/bf02256142 |
| Popis: | According to the relationships derived in [1], transverse normal and tangential stresses in a sandwich panel have been analyzed. Asymptotic formulas for the stress concentration area in the vicinity of point forces are derived. Analytical estimates of a normal stress at the central and end sections of the panel are deduced. The Saint-Venant effect of the degeneration of a panel of finite length into an infinite strip is studied. For the estimation of the concentration of the transverse tangential stress, the possibility of a superposition of the solution of the slippage problem of the face layers and the classical solution allowing for shear is substantiated. It is shown that the local Reissner-type effects are specified by reducing the concentration of the tangential stress in the face layers along the longitudinal coordinate and transition to the steady tangential stress state in the filler layer. The concentration coefficients of the tangential stress are derived as functions of the dimensional parameters of the panel section. |
| Databáze: | OpenAIRE |
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