shear strength
Shear strength in engineering is a term used to describe the strength of a material or component against the type of yield or structural failure where the material or component fails in shear.
In structural and mechanical engineering the shear strength of a component is important for designing the dimensions and materials to be used for the manufacture/construction of the component. For example, beams, plates, bolts etc. In a reinforced concrete beam, the main purpose of stirrups is to increase the shear strength.
For shear stress applies
where
is major principal stress
is minor principal stress
In general: ductile materials fail in shear (ex. aluminum), whereas brittle materials (ex. cast iron) fail in tension. See tensile strength.
To calculate:
Given failing force and area, example-bolt shear strength:
See also
Shear modulus
Shear stress
Shear strain
Shear strength (soil)
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