Jump to key moments of The beam in the figure a has a cross section as shown. Assume the material of the beam exhibits elastic-perfectly plastic behaviour, has a yield stress of 𝜎𝑌 = 250𝑀𝑃𝑎 and that the internal moment is positive. a) Determine the shape factor for the cross section in the figure. b) Determine and sketch the residual stresses when the plastic moment is removed. Die balk in die figuur het ‘n dwarssnit soos getoon. Aanvaar die materiaal van die balk toon elasties-perfek plastiese gedrag, het ‘n swigspanning van 𝜎𝑌 = 250𝑀𝑃𝑎, en die interne moment is positief. a) Bepaal die vorm faktor vir die dwarssnit in die figuur. b) Bepaal en skets die residuele spannings wanneer die plastiese moment verwyder word.