Martin, Louis Adolphe, 1880- · New York, J.Wiley & Sons, Inc.: [etc. etc.] · leaf 53
rce and Bending Mo-ment.— The above discussions and diagrams of S.Fs.and B.Ms, show that whenever an abrupt change in the 32 MECHANICS OF MATERIALS loading occurs a discontinuity in the equations of S.Fs.and B.Ms, results. In any interval between such discontinuities a definiterelation exists… … From the relations shearing force = resistance to shear,and bending moment = resisting moment, it is evident that we may use Qx and Mx to indicatethe total effect of the internal stresses at the section xunits from the origin, and similarly Mx + dMx andQx + dQx represent the action of the internal…
Mechanics
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