In the pin-connected structure shown in Fig. 12.4, the true stress–engineering strain cu...

In the pin-connected structure shown in Fig. 12.4, the true stress–engineering strain curves of the members are expressed by and Verify that, for all three bars to reach tensile instability simultaneously, they should be set initially at an angle described by

Calculate the value of this initial angle for n₁ = 0.2 n₂ = 0.3.