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- Resultant moment M is then given as M = M2 cosθ x + M3 sinθ, and projected plastic rotation Rp is given as Rp = R2 p2 cosθ x + R3 p3 sinθ.
- These relationships indicate that the moment and rotation values of a P-M2-M3 moment-rotation curve are obtained through basic geometric relationships between components projected along the M2 and M3 axes, as shown in Figure 1:
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