サンドイッチ片持はりの応力解析

概要

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Stress analyses were carried out on a simple sandwich cantilever beam using a photoelastic technique and a finite element method. They were analyzed by changing the ratio of Young's modulus of the face layer to the one of the core layer, and the ratio of depth of the core layer to the one of the face layer systematically. The materials used in the preparation of the model were Araldite B for the face layers, and epoxy-rubber for the core layer. Each model was loaded as a cantilever with a concentrated load at the end. The concentrated load was applied at the same cross section but at different two points, namely at the face layer and the core layer. Thereby, the applicability and the Limitations of ST.Venant's theory with particular reference to sandwich beams were discussed. Furthermore, the maximum stresses for the face layeres of the each model were obtained.
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