ESTIMATION OF MAXIMUM BENDING MOMENT FOR THIN-WALLED CYLINDRICAL TUBE
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Abstract
This paper was aimed to write the mathematic model in order to determine the maximum bending moment of circular tube subjected to bending. The research was divided in two different approaches, experiments, and theoretical prediction. The experiment used mild steel of different diameter to thickness ratios ranges from 21.16 to 44.36 and each was triplicate to find average value of maximum bending moment. The theoretical prediction was to determine the maximum bending moment of tube by noticing a collapse behavior of tube at the maximum moment position of the moment-rotation response. This approach was assumed that sectional. The collapsed behavior of sectional tube was oval. The oval section has the major axis was 1.1R and minor axis was 0.95R (R was the outside radius of tube). Form the theoretical prediction results were compared with experiment and other available models. The results showed good agreement between the theoretical prediction and experimental results.
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Articles published in Journal of Industrial Technology Ubon Ratchathani Rajabhat University both hard copy and electronically are belonged to the Journal.
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