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Why modulus of rigidity is not considered in shear test?
The modulus of rigidity, or shear modulus, is not typically considered in shear tests because these tests primarily focus on determining the material's shear strength and behavior under shear loading. Shear tests, such as the torsion test or direct shear test, measure how materials deform and fail under shear stresses, rather than quantifying their elastic properties. While the shear modulus can be derived from the initial linear portion of the stress-strain curve in some tests, the main objective is to evaluate the material's performance and failure characteristics under shear conditions.
Why the engineering stress-strain curve in shear is the same as the true stress-strain curve?
The engineering stress-strain curve in shear is the same as the true stress-strain curve because, in shear, the definitions of stress and strain do not change significantly with the material's deformation. True stress accounts for the instantaneous area under load, while engineering stress uses the original area; however, in shear, the relationship remains linear up to the yield point, and the area reduction effect is minimal for typical shear tests. Thus, both curves reflect the same material behavior in shear deformation, leading to equivalent representations.
What is the ratio of average shear stress to maximum shear stress for a circular section?
the average shear stress is 3/4 the maximum shear stress for a circular section
Is it correct to say shear tensile strength or tensile shear strength?
The correct term is "shear tensile strength." This term refers to the material's ability to withstand shear stresses before failure, particularly in situations where tensile forces are also acting. "Tensile shear strength" is less commonly used and may cause confusion, as it implies a different relationship between tensile and shear stresses.
Introduction of chip thickness ratio and shear plane angle during machining?
shear plane angle is Eric siangco + hulian lastontas = shear plane angle
What are some examples of Newtonian fluids and how do they behave under shear stress?
Newtonian fluids are fluids that have a constant viscosity, such as water and most oils. When subjected to shear stress, Newtonian fluids exhibit a linear relationship between the shear rate and shear stress, meaning they flow consistently and predictably.
What is Study of non newtonian fluids?
The study of non-Newtonian fluids involves understanding fluids that do not follow Newton's law of viscosity. These fluids exhibit unique behaviors such as shear-thinning (viscosity decreases with increased shear rate) or shear-thickening (viscosity increases with increased shear rate). Understanding these behaviors is important in various industries such as food processing, cosmetics, and medicine.
The relationship between shear rate and viscosity?
Shear rate and viscosity are related to each other. According to shear rate and viscosity we can classifying the materials especially paints. Fluids are divided into two types like 1.NEWNONION FLUIDS and 2.NON NWETONINON FLUIDS based on shear rate and viscosity. In fluids if there no change in viscosity with respective shear rate, such type fluids are known as nwetonion fluids. Viscosity changes with respective shear rate such type of fluids are known as non nwetonion fluids.
What is the difference between viscoelastic fluid and viscoelastic solid?
Viscoelastic solids return, for the most part, to their original shape when a substantial applied shear load is removed. Viscoelastic fluids do not. This distinction does not have a clear boundary as viscoelastic materials all have both fluid and solid properties.
Is honey shear thinning?
Yes, honey is considered a shear-thinning fluid, meaning it becomes less viscous and flows more easily when subjected to shear stress, such as stirring or pouring.
Why fluids do not sustain shear stress?
Fluids do not sustain shear stress because they undergo continuous deformation under applied shear forces. Unlike solids that have a defined shape and can resist shear stress, fluids flow and deform when subjected to shear, resulting in no sustained shear stress. This behavior is a fundamental property of fluids known as viscosity.
What are the differences between Newtonian and non-Newtonian fluids and how do these differences affect their flow behavior?
Newtonian fluids have a constant viscosity regardless of the applied stress, while non-Newtonian fluids have a viscosity that changes with the applied stress. This difference affects their flow behavior as Newtonian fluids flow consistently, following Newton's law of viscosity, while non-Newtonian fluids can exhibit complex flow patterns such as shear-thinning or shear-thickening behavior.
What are the differences between Newtonian and non-Newtonian fluids and how do these differences affect their flow properties?
Newtonian fluids have a constant viscosity regardless of the applied stress, while non-Newtonian fluids have a viscosity that changes with stress. This affects their flow properties as Newtonian fluids flow consistently, following Newton's law of viscosity, while non-Newtonian fluids can exhibit different flow behaviors such as shear-thinning or shear-thickening, depending on the stress applied.
Can you provide an example of shear thinning in a material?
An example of shear thinning in a material is when ketchup becomes easier to pour as you apply force to it, but thickens back up when the force is removed.
How do you characterized the difference in resistance to shear in fluids?
all fluids have no shear strergths the rate with that they deform will vary with the fluid.
What has the author Thomas F Derby written?
Thomas F. Derby has written: 'Loss factor and resonant frequency of viscoelastic shear-damped structural composites' -- subject(s): Composite materials, Damping (Mechanics), Viscoelastic materials
What are some examples of materials that exhibit shear thinning behavior?
Some examples of materials that exhibit shear thinning behavior include ketchup, toothpaste, and certain types of paint. These materials become less viscous and flow more easily when subjected to shear stress, such as when being squeezed or stirred.
