The process which converts the kinetic energy of the vehicle into mechanical energy is known as Braking, which must be dissipated in the form of heat. The device using for decelerating or stopping the rotation of a wheel is called as disc brake. A brake disc (or rotor) usually made of linear shaped slots between plates and a disc brake ( or rotor) usually made of curved shaped slots between plates having materials used in both is Structural Steel, is connected to the wheel and/or the axle. Friction material in the form of brake pads (mounted on a device called a brake calliper) is forced mechanically, hydraulically, pneumatically or electromagnetically against both sides of the disc to stop the wheel. The present thesis topic is generally deals with the improved analysis on Structural Analysis on two different models one have linear slots and other have curved slots between the two plates of disc brakes, using of ventilated disc brake using CATIA v5 R20 and ANSYS15.0.7 we found that ventilated disc having curve slot have less development of strain and stress in comparision of ventilated disc having linear slot on same parameter. In this research Coupled Analysis (of both different shaped slots) is performed in order to find the strength of the disc brake. In structural analysis displacement, ultimate stress limit for the design is found as an important factor.