For the 3D truss problemthat we solved in the class. (i) Investigate the difference between direct stress, maximum bending stress, and maximum combined stress elements 1, 2, 9,11, 20, and 25. (ii) Investigate the effect of size of mesh on total deformation and stress (e.g. minimum bending stress and minimum combined stress) in the same elements. (iii) Investigate the effects of averaged/unaveraged integration point on total deformation and stress (direct, max/min bending stress, max/min combined stress) in the same elements.

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