Experimental Study of Nonprismatic Folded Plates

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Abstract
An experimental study was conducted on two aluminum nonprismatic folded plate structural models. The stresses, moments, and deflections predicted by a theory for the analysis of long nonprismatic folded plate structures, which is an extension of ordinary folded plate theory, are compared to the experimental results obtained from the model study. Model 1 is made of eight triangular plates with a span to maximum depth ratio of about three. Model 2 is made of eight trapezoidal plates with a span to maximum depth ratio of about four. The predictions by the theory are shown to be in good agreement with the experimental results for both models. It is also shown that elementary beam theory is inaccurate in predicting the behavior of interior plate elements in regions where large differences exist between the depths of adjacent plates.

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