A theoretical analysis is presented for a fully clamped beam made from a rigid, perfectly plastic material, which is subjected to a uniformly distributed blast loading with a magnitude that decreases with time. The influence of the transverse shear force as well as the bending moment is retained in the yield condition. It is observed that when the dimensionless transverse shear parametervin the present paper is substituted by2v, the dimensionless results, except for the bending moment, are the same as those obtained by Nonaka for a simply supported beam subjected to the same external loading. However, the bending momentmc(#x3BE;), for a fully clamped beam, may be expressed in the present paper in the formmc(#x3BE;) = 1 + 2mc(#x3BE;), wherems(#x3BE;) (#x2212;l #x2264;ms#x2264; 0) is the corresponding bending moment for a simply supported beam.
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