Strength of Materials

SALIENT POINTS

• If the properties of a substance are assumed to exist as continuous distribution of mass, then this idealized subtance is called a continuum.
• A rigid solid body may be defined as a body in which the relative positions of any two arbitrary points is invariant under any condition.
• A deformable solid body may be defined as a body which may change its linear or angular dimensions or deform under certain conditions.
• A body can be isolated from the actions of all the outside systems by representing such actions as a set of forces which are denoted as external forces. External forces comprise body and surface forces.
• Body forces are distributed once the entire volume of the body and are expressed as force per unit volume.
• Surface forces ...