A circular bar of 2 m length has a diameter 100 mm (E=200 Gpa, v=0.32, a = 11.7p/c°). The bar's left end is built into a rigid wall and a gap of 0.5 mm exists between right wall and right end of the bar prior to an increase in th temperature. The temperature of the bar is increased uniformly by 80 cº. Determine the average axial stress and change in the diameter of the bar 15

Is the maximum normal stress theory useful to predict the accurate failure of brittle material?

Where Expressions from the linear theory of elasticity are in use?

If the engineering strain in a tensile bar is 0.0025 and Poisson’s ratio is 0.33, find the original length and the original diameter if the length and diameter under load are 2.333 ft. and 1.005 in. respectively.

Q3: Two material were tested in tension, the first is aluminum alloy has stress-strain curve define by 300 MPa was fracture after 35% reduction in area. The other a copper alloy has stress-strain curve define by=100+120 MPa was fracture after 98% elongation. Which alloy have more toughness? Support your answer with the sketch.?

Consider the tensile stress-strain diagram below. If samples 1 and 2 are different materials, which sample is tougher? A.  Both samples are equally tough/ Albei monsters is ewe taai B.  Sample 2 C.  Sample 1