Which of the following fluids exhibit a certain shear stress at zero ...
The shear stress vs. rate of strain behavior of different fluids is as shown in the figure.
Where
1 → Dilatants like quicksand, oobleck
2 → Newtonian fluids like water, air
3 → Pseudo plastics like blood, milk
4 → Bingham substances like mayonnaise, toothpaste
Bingham substances are those which undergo static deformation upto a limiting value (τ) of shear stress and behave as solids but beyond this limiting value they deform continuously and behave as fluids.
Thus if τ < τ0,="" even="" though="" there="" will="" be="" deformation="" but="" the="" rate="" of="" deformation="" will="" be="" />
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Which of the following fluids exhibit a certain shear stress at zero ...
Bingham Plastic Fluids
Bingham plastic fluids are a type of non-Newtonian fluid that exhibit a certain shear stress at zero shear strain rate followed by a straight line relationship between shear stress and shear strain rate. They have a yield stress, which is the minimum stress required to initiate flow, and once the yield stress is exceeded, they behave like a Newtonian fluid.
Examples of Bingham plastic fluids include toothpaste, ketchup, and mayonnaise. These fluids have a certain resistance to flow until a certain stress is applied, and then they flow easily.
In the context of civil engineering, Bingham plastic fluids can be used to model the behavior of certain types of soil. Soil with a high clay content may exhibit Bingham plastic behavior, as it has a certain resistance to deformation until a critical stress is reached, at which point it flows more easily.
In summary, Bingham plastic fluids exhibit a certain shear stress at zero shear strain rate followed by a straight line relationship between shear stress and shear strain rate. They have a yield stress and behave like a Newtonian fluid once the yield stress is exceeded. Examples of Bingham plastic fluids include toothpaste, ketchup, and mayonnaise, and they can be used to model the behavior of certain types of soil in civil engineering.
Which of the following fluids exhibit a certain shear stress at zero ...
How
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