What is meant by shear strength?
In engineering, shear strength is the strength of a material or component against the type of yield or structural failure where the material or component fails in shear. A shear load is a force that tends to produce a sliding failure on a material along a plane that is parallel to the direction of the force.
For example, for a mild steel with an ultimate (or tensile) strength of 60000 psi, the ultimate strength in shear would be 0.82(60000)=49200 psi. This material will fail (or fracture) in shear if the shear stress exceeds 49200 psi.
- Shear strength is a term used in soil mechanics to describe the magnitude of the shear stress that a soil can sustain. The shear resistance of soil is a result of friction and interlocking of particles, and possibly cementation or bonding at particle contacts.
- Shear strain is the ratio of deformation to original dimensions. In engineering, shear strain is defined as the tangent of the angle, and is equal to the length of deformation at its maximum divided by the perpendicular length in the plane of force application, which sometimes makes it easier to calculate.
- Compressive strength or compression strength is the capacity of a material or structure to withstand loads tending to reduce size, as opposed to tensile strength, which withstands loads tending to elongate.
Typical tensile strengths
|Material||Yield strength (MPa)||Ultimate tensile strength (MPa)|
|Steel, structural ASTM A36 steel||250||400–550|
|Steel, 1090 mild||247||841|
|Chromium-vanadium steel AISI 6150||620||940|
- Steel is strong and less likely to warp, deform or bend under weight, force or heat. Nevertheless the strength of steel's tradeoff is that steel is much heavier /much denser than aluminum. Steel is typically 2.5 times denser than aluminum.
- Typical tensile strengths
Material Yield strength (MPa) Ultimate tensile strength (MPa) Steel, structural ASTM A36 steel 250 400–550 Steel, 1090 mild 247 841 Chromium-vanadium steel AISI 6150 620 940 Human skin 15 20
- The tensile strength of a metal is essentially its ability to withstand tensile loads without failure. Ductility, on the other hand, measures a material's ability to deform under tensile stresses. This is an important factor in metal forming processes since brittle metals are more likely to rupture.
Updated: 25th November 2019