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A semi-elliptic multi-leaf spring is needed for the suspension of the rear axle of a truck. It consists of two extra full-length leaves and ten graduated length leaves including the master leaf. The centre - tocentre distance between the spring eyes is 1.2 m. The leaves are build of steel 55Si2Mo90 (Syt = 1500 n/mm2 and E = 207000 N/mm2) and the factor of safety is 2.5. The spring is to be designed for a maximum force of 30 KN. The leaves are pre-stressed so as to same stresses in all leaves. Evaluate :
(i) The cross-section of leaves, and
(ii) the deflection at the end of the spring.
Magnitude of a couple: So l.: For system, magnitude of couple is equal to algebraic sum of the moment about any point If the system reduces to couple, the resultant forc
Types Of Polymerisation When some of bifunctional molecules connect in a chain structure, the reaction is termed as addition polymerisation. However, these polymerizations do
An engine repair workshop in County Durham has identified a need for a winch which is to lift complete engine assemblies from floor level up to workbench level to allow remedia
Telescopic Hydraulic Fork: This type of suspension system is used to serve for front part of motorcycle. Figure (Front Suspension Fork) shows detailed view of front fork assembly.
kinds of machine tempering
A piston-cylinder assembly fitted with a paddle wheel contains air, initially at p1=30 lbf/in2, T1=540 °F, and V1=4 ft3. The air undergoes a process to a final state where p2=20 lb
Petrol: Work in a well-ventilated area. Keep flames or sparks away from the work area or where petrol is stored.
GENERAL REASONS FOR DEFECTS The importance of weld quality is increasingly felt as we go ahead with the fabrication of sophisticated products using higher strength mater
How is local shear mode characterized in bearing capacity? Local Shear Failure The local shear mode of failure is characterized by slip zones, small surface heave and a poor
The two-storey frame shown in Figure Q4 is such that the self-mass may be considered to be located at the beam levels and the beams may be presumed to be rigid. The self-mass (
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