CHASSIS

Vehicle chassis is a back bone of all the vehicles. It is also called as “frame structure”. The main function of chassis to carry entire power train system such as radiator, engine, propeller shaft, suspension system, brake system, hydraulic system, rear axle with differential unit and body, also carry weight of payload and vehicle weight. In static and dynamic condition, to withstand bending, torsion and combined bending and torsion loads while cornering and fore and aft. The structure should be higher strength and stiffness.

TYPES OF CHASSIS

There are many types of chassis with respect to varying applications such as

1. Conventional Chassis: this type of chassis made by channel section and it is not a direct load carrying member. Instead of that load carrying through mounting bracket structure with cross members such as ladder chassis, cross frame chassis & trailer truck chassis etc.

2. Monocoque Chassis: This type of chassis also called frameless chassis, the body structure itself act as a chassis. The body support all the systems and individual components of the vehicle such as modern cars and light vehicles.

3. Backbone Chassis: This chassis is a high strength single tube structure connected with front and rear suspension attachment. The whole vehicle weight act on the structure, normally rectangular in cross section.

4. Tubular chassis: This type of chassis is a space frame in the form of structural steel pipe. The strength of the pipe is depends upon the quality of Weldments as per standard. Durability of a chassis is good as compare to other chassis. Generally used in race cars.

5. Sub Chassis: This is also called sub-frame structure. The power train system mounted on the sub-frame for easy construction and bolted on the main frame. The sub-frame structure is supported by the mainframe to avoid the effect of torsion stress and deformation. Sub-frame structure used in dump truck.

Prepared by : Dr.N.V.DHANDAPANI M.E.,Ph.D., – R&D Head @Manchester Engineers Centre