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2019-11-22

Wrong Sign of Shear Force Diagram Due to No Uniform Member Orientation

I have modeled a simply supported beam with several members. Why are the signs of the shear force diagram partially incorrect?


Answer:

There is very likely no uniform member orientation; see Image 01.

As soon as the member orientation is uniform (right-click on the member → "Reverse Member Orientation"), the signs of the shear force diagram also match; see Image 02.


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