A 1 meter long steel rod AB of 15-mm diameter is held snugly (without any initial stresses) between rigid walls by the arrangement shown in the figure. (STEEL ROD : E = 200 GPa , α= 12 x 10-6/°C , and yield strength σY = 250 MPa.) a) If the rod undergoes a temperature drop of 24°C, and the bolt at B is tightened causing the rod to elongate by 0.0566 mm, determine the bearing stress between the washer and the wall. b) Determine the amount of temperature drop that is allowed if the factor of safety against yielding is 4.

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Dependence on mechanical properties

The mechanical properties of materials are those structures that include the reaction to the load used. Metal switching features determine the scope of the usefulness of the content and establish the expected service life. Machine structures are also used to help distinguish and identify material objects. The most common mechanical properties considered are strength, ductility, stiffness, impact resistance, and resilience to fractures.