Stress 上清充通大婆 DREANOIAI AO TONG UNIVEREITT Definition of stress Stress what's stress? Stress force per unit area.In general the force will not be uniformly distributed over any cross section of the body. lim △P =S △4-→0△A where A is the area on which the force acts. ② ② 9% (b1 a) Body inequibrium under action of external forces PP b)forces acting on parts Institute of Forming Technology Equipment 10Institute of Forming Technology & Equipment Stress Definition of stress 10 Stress what’s stress? Stress : force per unit area. In general the force will not be uniformly distributed over any cross section of the body. where A is the area on which the force acts. a) Body in equilibrium under action of external forces P1, P2, ..., P5 ; b) forces acting on parts 0 lim A P s   A   