Shear modulus
Ratio of shear stress to shear strain / From Wikipedia, the free encyclopedia
Dear Wikiwand AI, let's keep it short by simply answering these key questions:
Can you list the top facts and stats about Shear modulus?
Summarize this article for a 10 year old
SHOW ALL QUESTIONS
In materials science, shear modulus or modulus of rigidity, denoted by G, or sometimes S or μ, is a measure of the elastic shear stiffness of a material and is defined as the ratio of shear stress to the shear strain:[1]
Quick Facts Common symbols, SI unit ...
Shear modulus | |
---|---|
Common symbols | G, S, μ |
SI unit | Pa |
Derivations from other quantities | G = τ / γ = E / [2(1 + ν)] |
Close
where
- = shear stress
- is the force which acts
- is the area on which the force acts
- = shear strain. In engineering :=\Delta x/l=\tan \theta } , elsewhere :=\theta }
- is the transverse displacement
- is the initial length of the area.
The derived SI unit of shear modulus is the pascal (Pa), although it is usually expressed in gigapascals (GPa) or in thousand pounds per square inch (ksi). Its dimensional form is M1L−1T−2, replacing force by mass times acceleration.