Strength of material 2 Essay Example | Topics and Well Written Essays - 500 words

Strength of material 2 - Essay ExampleBeams Beams are often sort out according to their ideal support conditions as either simply supported beams or cantilever beams. Beams are subject to bending stresses when incumbrances are use and experience compressive, shear and tensile forces. A simply supported beam is fixed on two ends. When loading the maximum tensile stress occurs at the midpoint of the bottom edge of the beam and the maximum compressive stress occurs at the midpoint of the top edge. A cantilever beam is supported on unrivaled end only and must be built into the wall that supports it. Two forces act on cantilever beams firstly, a vertical upward force which supports the weight unit of the beam and any downward loads and secondly the fixing moment which prevents the unsupported beam from falling (Eric William Nelson et all, 1997). A beam may be smashed enough to resist bending moments set up by its load and yet may sag without collapsing. This is called deflection and is dictated by the elasticity and stance of the material used to build it.Columns and Struts Columns, also known as stanchions support compressional loads along their longitudinal axes. The effective of excessive loading on a column is that the column could cause it buckle or crush like a wall coming down. A short column is one whose meridian is small relative to its thickness is small relative to its thickness. Whether or not the column will remain stable under increasing axial load will depend on the strength of the material that constitutes the column. A long or slender column has a greater height relative to its thickness. A long column becomes unstable and buckles at a load much smaller than which would crush a short column of the same cross-section and material. This is called the deprecative load. Unlike beams, the loading capacity of a column depends less upon the strength of the material of which it is made than upon its stiffness and this decreases with a