Mechanical Engineering :: Machine Design
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The Wahl's stress factor (K) for springs is given by
(where \(C = Spring index = \frac { Mean dia. of spring (D) } { dia. of wire (d)}\) -
According to Rankine's theory, the failure occurs at a point in a member
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The dedendum is the radial distance from the
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In a steam engine, the valve rod is connected to an eccentric rod by means of
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In helical gears, the distance parallel to the axis, between similar faces of adjacent teeth, is called
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A.
when the maximum shear stress in a bi-axial stress system reaches the shear stress at elastic limit in a simple tension test |
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B.
when the maximum principal stress in a bi-axial stress system reaches the elastic limit of the material in a simple tension test |
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C.
when the strain energy per unit volume in a bi-axial stress system reaches the strain energy at the elastic limit per unit volume as determined from a simple tension test |
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D.
when the maximum principal strain in a bi-axial stress system reaches the strain at the elastic limit as determined from a simple tension test |