WHAT IS SHEAR FORCE AND BENDING MOMENT | SIGN CONVENTION FOR SHEAR FORCE AND BENDING MOMENT | #SFD

Download our android app for job oriented courses https://clpsheldon.page.link/x3kb In this tutorial i have explained briefly the concept of shear force and bending moment Queries solved ; what is is shear force and bending moment sign convention for shear force and bending moment what is positive bending moment and negative bending moment what is positive shear force and negative shear force SHEAR FORCE AND BENDING MOMENT: When a beam is subjected to set of loads and reactions, as a result of which the internal forces and moments tend to setup within the beam This internal force is the shear force and the internal moments are the bending moments. For illustration, consider a beam with a given set of loading supported at two points A & B giving rise to reactions at the two supports. Let's cut the beam into two parts & let's assume that the resultant of loads (F) and reactions to the left of section xx is vertically upwards. For equilibrium of the section, the resultant of loads and reactions to the right of section xx has to be equal to ''F" but vertically downwards. This force is known as shear force. Hence SHEAR FORCE is defined as the algebraic sum of all the vertical forces either to the right or to the left of a section. SIGN CONVENTIONS FOR SHEAR FORCE: 1).The shear force will be positive if the resultant of forces to the left of the section is upwards, or to the right of the section is downwards.