Introduction
There is a market need for a device that allows constrained relative motion between two or more parts in a rotational or linear sense without causing excessive wear. The bearing is intended to fulfill this need by providing a smooth surface and mechanism that allows a shaft or component to move independently without causing damage in the form of wear to its support. Bearings themselves can be classified in terms of the motions that they allow, the particular principle of operation that they implement and the direction of applied loads that they are capable of handling. The specific design of bearing that will be evaluated in this report is the plain bearing [1].
Plain bearings tend to be the most inexpensive type of bearing available. Key features of this type of bearing include that they are light weight, compact and have high load-carrying capacity when compared to other varieties [7].
From this a brief initial product design specification can be made:
The bearing must be:
- light weight
- compact
- easily manufactured
- able to have a high load carrying capacity
- easily machined to be smooth
Plain Bearing Design
The factor that influences the specific design of a plain bearing is the type of motion that the bearing must accommodate. The three types of motion that are applicable for use with the plain bearing are journal or friction bearing, thrust and linear. The journal bearing, which is effectively a radial or rotary bearing, is the most common application; this is where a shaft rotates inside the bearing. As the journal bearing is the most common application, it is the particular principle of operation that will be covered by this report [7].
Plain bearings acting as independen...
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For the other material ASTM A216 Gr WCB same pressure of 16 Mpa is applied and the stress developed is approximately as similar to the connecting rod made with material of cast iron. Figure no. 9 indicates the maximum and minimum stress developed in connecting rod at small & big end. The equivalent stress maximum and minimum values are 71.347 MPa and 4.4955e-5 MPa respectively.
For this scope of this assignment a study in the surface modification of a titanium alloy stem, used in a hip joint implant is going to be studied. A total hip joint implant consists of an articulating bearing basically the femoral head and cup and the stem. The stem is made from titanium alloy - Ti- 6Al- 4V where titanium is alloyed with aluminium and vanadium. When titanium is alloyed with these materials excellent properties are achieved such as high strength-to-weight ratio and exceptional corrosion resistance.2 However, this alloy gives poor tribological properties and tends to seize when it is subjected to sliding motion due to its low hardness of 36HRC.3 Several surface modification techniques are done on ti...
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The 'Standard' of the 'Standard'. Rinaldi, Ray. Mark. You Can Unpack Your Trunk Here. Denver Post. 03 Jun. 2012:
Since then the main advances in gearing technology is the material they are manufactured from as well as the theory of gearing. With the introduction of casting, gears became much stronger, smaller and more durable. With new materials came new manufacturing techniques and material treatments increasing the life and durability of gears and at the same time decreasing the maintenance needed.[3] With the growing demand on gears in mechanical machinery and equipment the design of gears also changed along with the applications. Quieter and compact gears were developed and introduced into many mechanical machines such as the automobile allowing greater speeds and more power. The weight and efficiency was ...
== 1. The flywheel was set as shown with the axle of the flywheel horizontal. A polystyrene tile was placed on the floor to avoid the impact of the mass on the floor. 2. The vernier caliper was used to measure the diameter d of the axle.
Q1. Using the Mabati Rolling Mills Case Study, explain the various sources of funds as discussed by the management of Mabati Rolling Mills. Give the advantage and disadvantage of each source.
,n.d. web. 21 May 2014 Petroleum engineering. Encyclopedia Britannica. N.P., n.d. Web.
delivering power instantly to the wheels. By providing high torque at low speeds, they give a feel