The Point of a Contra Flexure is the Point Where _____.

Explanation:

• The bending moment is 0 at the point of contra flexure.
• When bending is zero, and at the transition between positive and negative bending, the point of contra flexure (PoC) occurs (or between compression and tension). The point of contra flexure is the location in a flexing (or bending) beam where there is no bending moment.
• The bending moment is either at its maximum or minimum when the shear force at a location is zero. Shear force is defined as dM/dx, where M is the load-induced bending moment. M is the maximum if Shear is zero. When we compare the BM and SF diagrams.

Summary:

The Point of a Contra Flexure is the Point Where _____.1. B.M. changes sign 2. B.M. is a maximum 3. B.M. is a minimum 4. S.F. is zero

The point where B.M changes sign is the point of contraflexure. The bending moment at the point of contra flexure is 0.

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