Mechanics of Materials: Stress, Strain, Pressure Vessels, and Torsion

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36 Terms

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the maximum stress that remains directly proportional to the strain

Proportional limit

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the minimum stress that causes breaking down of a material and thereby permanent/plastic deformation

Yield Strength

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the stress that is caused by the maximum load that can be applied to a material

Ultimate Strength

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the stress of a material at the moment it breaks

Rupture Strength

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the increase in strength of a ductile material within the plastic range

Strain hardening

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localized reduction of cross sectional area before breaking

Necking

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Axial stress


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Modulus of Elasticity

f

<p>f</p>
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Mechanical Deformation

f

<p>f</p>
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Longitudinal Stress

f

<p>f</p>
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For thin walled pressure vessel Area

f

<p>f</p>
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Tangential/Hoop/Girth/Circumferential Stress

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Spherical Pressure

f

<p>f</p>
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Bursting force

f

<p>f</p>
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Bursting force per meter

f

<p>f</p>
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Thermal Deformation

f

<p>f</p>
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For unyielding supports, thermal stress -

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Simple Shear Stress

f

<p>f</p>
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Shear Deformation

f

<p>f</p>
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Shear Strain

f

<p>f</p>
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Modulus of Rigidity / Shear Modulus

f

<p>f</p>
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Torsional Shear Stress

f

<p>f</p>
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Angle of Twist

f

<p>f</p>
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Shear Strain

f

<p>f</p>
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Modulus of Rigidity

f

<p>f</p>
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Polar Moment of Inertia

f

<p>f</p>
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For hollow circular shaft, polar moment of inertia and max torsional stress

f

<p>f</p>
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For solid circular shaft, polar moment of inertia and max torsional stress

f

<p>f</p>
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Spring Shear Stress

f

<p>f</p>
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Maximum Shear Stress, A.M. Wahl's Formula

f

<p>f</p>
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spring index

f

<p>f</p>
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Wahl factor

f

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Maximum flexural stress

f

<p>f</p>
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Curvature

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Maximum flexural stress in terms of rho

f

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Maximum flexural stress shortcut

f

<p>f</p>