Exercise 2 The term Ej represents a strain tensor as given below w.r.t. x, y, z-axis. If another strain tensor Ens is formed by rotating the x, y, z-axis about z-axis, through 30°, find Ens and invariants of both the tensors. Show that they are equal. ΓΟ 2 2] ГО 0 Eij 20 L2 2 31 2 x 10-4

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