one more thing , why at x = 6 , the shearing force is still 49kN as in the calculation ? why shouldn't it be = 0 ?David Lewis said:
Because the reaction RA is located at x = 2. As you move along the beam from left to right, the shear force has a sudden jump from V = -40 kN to V = 89 kN, as the reaction RA = 129 kN is added.foo9008 said:
Why should the shear be zero at x = 6?foo9008 said:
sudden jump means there are 2 values of RA at x =2 ? why ?SteamKing said:
Because they are each integrals. The shear force is the integral of the load curve w.r.t. length, and the bending moment is the integral of the shear curve, also w.r.t. length.foo9008 said:
No, there is only one value of RA, namely RA = 129 kN.foo9008 said:
Shearing force is the force that acts parallel to the cross-sectional area of a material, causing it to deform or break. It is also known as transverse force.
Shearing force can be calculated by taking the sum of all the forces acting perpendicular to the cross-sectional area at a specific point. It is represented by the symbol "V" and is measured in Newtons (N) or pounds (lbs).
Shearing force and bending moment are both forces that act on a material, but they have different effects. Shearing force causes a material to deform or break, while bending moment causes a material to bend or twist.
Knowing the shearing force and moment is crucial in understanding how a material will behave under different loads and stresses. This information is important in designing structures and machines that can withstand these forces without failing.
There are several methods for finding shearing force and moment, including graphical methods, analytical methods such as the shear and moment diagrams, and numerical methods such as the finite element method. The method used will depend on the complexity of the structure and the accuracy required.
