Difference between Stiffness (K) and Modulus of Elasticity (E)?
Dec 30, 2021 · Stiffness (F=Kx) is the extent to which an object resists deformation in response to an applied force. Elastic Modulus (E=Stress/Strain) is a quantity that measures an object or substance's …
Can someone help explain the difference between strength and stiffness?
Jan 9, 2024 · As far as I can understand, strength is a materials resistance to permanent fracture while stiffness would be resistance to temporary fracture. If possible could I also get a brief explanation of …
Why is the beam bending stiffness taken as $EI/L$?
Jun 12, 2021 · In moment distribution method, the bending stiffness of a beam is taken as EI/L E I / L. But in these kinds of stiffness tables, the flexural rigidity is usually divided by some power of L L: So …
What's the difference between ductility and stiffness?
Jan 9, 2024 · Materials are usually put into a basket of either being ductile or brittle. Brittle materials usually don't experience plastic deformation whilst ductile materials do. Some materials might then …
structural engineering - The many different units of stiffness ...
Oct 26, 2025 · And then there is axial stiffness, but I will leave that unless you guys ask for it? Thus, I have all these methods for computing the stiffness of the members, but the units of stiffness varies, …
mechanical engineering - What is the difference between torsional ...
Aug 27, 2024 · Furthermore, I am unable to determine the torsional stiffness/rigidity empirically using the torsion constant, as the cross-section of the part is a complex shape.
How does stiffness/rigidity affect the bending moment of a beam
Dec 18, 2018 · As mentioned by other answers, when dealing with a statically determinate structure, the stiffness of each element is irrelevant when calculating the bending moment, but a key variable when …
mechanical engineering - How to calculate stiffness to weight ratio of ...
May 22, 2023 · Stiffness to weight ratio I am not sure if stiffness to weight ratio is meaningful for this case, but since the both cases have the same weight, relative stiffness difference will be the same. …
What is the equivalent rotational/angular stiffness of a beam
Mar 24, 2023 · I'm familiar with the concept of expressing the stiffness of a beam as an equivalent spring stiffness like in the image below: I'm curious if there's a way of doing to rotational analog to this, …
How does width and thickness affect the stiffness of steel plate?
Would making it wider help to support the weight and increase its stiffness, or do I need to make it thicker? Also is there a way to calculate how the stiffness will change with the thickness (or width if …