Compressive Strength of Clamped Plates Under Hydrostatic Pressure : Effect of Aspect Ratio of Plates

Abstract

In this paper, the compressive strength of clamped plates (aspect ratio α=1,2 and ∞ (infinitely long plates)) under combined loads of compression and hydrostatic pressure is theoretically investigated. At the same time, effect of aspect ratio of plates on the buckling and compressive strengths are also discussed from these results including those in previous studies. Results obtained in this study are summarized as follows: 1)From results on the buckling strengths for clamped plates (α=1,2,3,4 and ∞), it is found that the behaviour and occuring range of buckling phenomenon for each case are different but the change of buckling strength with hydrostatic pressure for each case is almost same except the case of α=1; 2)The compressive strength of clamped plates (α=1,2 and ∞) is calculated in the same way as the previous studies, and characteristics of the compressive strength and the collapse mode of the plates are clarified. 3)From above results including those for plates of α=3 and 4, it is found that the compressive strength for the plate of α=∞ in comparison with those for finitely long plates of α>__=1 is wholly lowest under same non-dimensional pressure qb^4/Et^4, and effects of aspect ratio of the plate on the change of the compressive strcngth with hydrostatic pressure for each case are generally similar to that in the case of simply supported plates.