Multiple Loading Problems
For a problem to be multi loading it means that the problem would have forces on in it in different directions. This would in turn cause different stresses on the part in different direction. These stresses could be both normal and shear stresses. First let's look at a problem that only has normal stresses on it. Refer to the problem below.
Notice in this problem the stress at points A and B are different. This is due to the fact that a stress due to bending is in tension on one side of the neutral axis while on the other side of the neutral axis it is in compression.
The same concepts apply to problems that consist of shear forces; refer to the problem below.
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