ENGR 2420U Lecture Notes - Shear Stress, Bending Moment, Modulus Guitars
Document Summary
Relation between shear force/moment and distribution load = 16/01/14 review of shear and bending moment diagrams. Mechanics of materials studies external loads to deformable bodies, and also intensity of internal forces. Deformation and stability depend on internal loadings and type of material. Describes intensity of internal force on a specific plane passing through a point. Normal stress (normal to a) and sh ear stress (tangent to a) First subscript specifies orientation of area, x & y are directions (seen below) Assumptions: uniform deformation & isotropic (same properties in all directions) P , the internal resultant force must be passing through the centroid so moment effect of force distribution will be zero. Stress that is less than what material can support. If " > pi/2 , then negative shear. Yield strength can be found by taking line parallel to elastic line and intersecting with graph. When ductile material is stretched into plastic region and then unloaded.
