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NEW 375 Lecture16

# NEW 375 Lecture16 - Consider a rectangular cross section...

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Unformatted text preview: Consider a rectangular cross section subjected to bending The bending stress distribution for this section would be: Stress Wedges for Other Shapes The resultants of the stress wedges are also related to the internal moment . Where C = resultant of the compressive stress wedge T= resultant of the tensile stress wedge THE RESULTANT FORCE OF A STRESS WEDGE EQUALS THE VOLUME OF THE STRESS WEDGE M = (C or T) d M = Cd = Td EXAMPLE PROBLEM WHAT IS THE RESULTANT COMPRESSIVE FORCE “C” ON THE CROSS SECTION? kips in k in C then in h and k in M For h M h M d M C d C M 15 .) 12 ( 2 ) 120 ( 3 : . 12 120 : 2 3 3 2 =- = =- = = = = ⋅ = ( 29 ( 29 ( 29 ( 29 ( 29 ( 29 in k k Cd M k ksi bc C ksi in in k I Mc in bh I- = = = = = = =- = = = = = 120 " 12 3 2 15 15 " 6 " 6 833 . 5 . 2 1 833 . 864 " 6 120 864 12 " 12 " 6 12 4 4 3 3 σ σ Example : T Section A T Section has the dimensions given in Figure below. Show that the neutral axis is 3 in below the top and that I NA = 166.7 in 4 ....
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NEW 375 Lecture16 - Consider a rectangular cross section...

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