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Unformatted text preview: e that retains the property of calculating this max stress 1 we can define this "effective breadth" as the plate width "which, when used in calculating the moment of inertia of the section, will give the correct maximum stress max at the junction of web and flange, using simple beam theory". ref: Hughes pg 122 that is: we use a breadth b e (< b) than results in a higher stress in the flange max from equilbrium: (assuming plate flange of constant thickness t) b b b e max t = t x dz or . ... b e max = x dz b x dz and b e = max see figure 3.36 in text derived from Schade "The Effective Breadth Concept in Ship Structure Design": trans . SNAME 61 two points to note: the most important parameter determining effective breadth is Lo the distance between zero bending moments for short beams (Lo ~ b) subject to uniform load b e ~ Lo/3 2...
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This note was uploaded on 02/24/2012 for the course MECHANICAL 2.082 taught by Professor Davidburke during the Spring '03 term at MIT.
- Spring '03