10-26. The 60° strain rosette is attached to point A on the surface of the support. Due to the loading the strain gauges give a reading of P a = 300(10 −6 ), P b = −150(10 −6 ), and P c = −450(10 −6 ). Use Mohr's circle and determine ( a) the in-plane principal strains and ( b) the maximum in-plane shear strain and the associated average normal strain. Specify the orientation of each element that has these states of strain with respect to the x axis. | |
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