The Concept of Neutral Axis
An important concept related to the practical determination of strain distribution is the Neutral Axis. What is the real meaning and significance of this term, used so often and so extensively in structural mechanics, analysis, and design? In essence, the neutral axis is a line produced by the intersection of the undeformed cross-section plane and the deformed surface as shown in Fig. 3.23C. This produces a surface of zero strain oriented along the longitudinal axis of the beam-type member. ...
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