Review and Design of Elliptical Shape Composite Spring Mount for Agriculture Engines

Mechanical Engineering

An engine mount is a application component that connects the engine bracket to the machine frame of agriculture equipment .The engine is connected to the application body by several mounts, which are important for smooth operation of the application. An engine mount is used to isolate the body from engine-generated noise and vibration during working . Different types of engine mounts are used in agriculture machinery and vehicles. Elastomeric mount are low cost and the simplest type of mounts they suppress engine force/torque and vibrations through heat dissipation. A elastomeric mount can provide the required stiffness for the resonance control and shock absorption, but the rubber damping in low frequencies is not sufficient. Moreover, the isolating characteristic of the rubber mount is not good because the transmitted force increases in higher frequencies due to the constant damping (. Elliptical shape spring mount is a vibration and shock isolator designed specifically for back mounted engine applications and is suitable to protect the application user against shock and vibration in the back held agricultural application such as engine sprayers , trimmers and utters . Material selected for the form spring is SS304 ( 0.3to 0.8 mm) thick and Polymer material as backing in spring. Both materials are resistant to corrosion and operate efficiently under wide range of temperature. Basic design employs high tensile stainless steel SS 304 formed leaves on each side with the polymer sheet of 6 mm thickness . Unigraphix Nx-8.0 is used for 3-d modeling and Analysis of critical component and meshing using Ansys Work-bench 16.0. The experimental results are derived part of the vibration reduction by implementation of Composite half elliptical leaf spring engine isolation mount will be done using a test rig developed for this trial purpose

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