Engineering, 30.12.2020 01:50 mariahmimibrooks
1) In an experiment on a thick cylinder of 100mm external diameter and 50 mm internal diameter. The hoop and longitudinal strains as measured by strain gauges applied to the outer surface of the cylinder were 240+10-6 band 60+ 10-6 respectively for an internal pressure of 90 MN/m the external pressure being zero.
Determine the actual hoop and longitudinal stresses present in the cylinder if E = 208 GN/m2 and v = 0 29. Compare the hoop stress value so obtained with the theoretical value given by the Lame equations.
2) Assuming that the above strain readings were obtained for a thick cylinder of 100 mm external diameter but unknown internal diameter calculates the internal diameter.
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