Layered Beam Systems with Interlayer Slip

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Abstract
Layered systems of various materials are used to fabricate beams, plates and shells. The procedures commonly employed to analyze such systems are based on assumption of rigid interconnection between layers. In some widely used systems, however, this assumption is questionable. The basic phenomenon of interlayer slip is considered and a consistent theory for layered beams is developed. The results of experiments with layered wood beams connected with nails, with and without glued ends, are given. Excellent agreement with the general theory is shown. The importance of interlayer slip effect on the deflection of layered beams is demonstrated. The procedures developed can be used for any mechanically-connected beam system.

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