Effect of Stress Distribution on Yield Points

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Abstract
In practice, the yield point of mild and structural steel is obtained by a standard axial tension test. The stress-strain diagram for compression has been. found to agree closely with that for tension. After the yield point has been obtained by this standard tension test it is commonly assumed that when any fiber in a steel structure reaches such stress intensity, yielding will occur. Such is not the case; yielding does not occur until higher stress intensities are reached when the distribution of stress over the critical section is not uniform. The stress at which yielding occurs is dependent on type of stress distribution and the shape of the cross section under stress.

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