Tagged Questions
0
votes
0answers
78 views
Whats the contact area for elastic contact between a cylinder and a plane surface?
I am trying to determine the contact area between a cylinder and a plane surface of two different materials so that the plane lies tangent to the cylinder. There is elastic contact between the two ...
2
votes
3answers
119 views
Glass pipe cutting
I want to know how to quickly create the straightest possible breaks in glass pipes
I apologise if this is only borderline suitable for a physics forum - I just hope experts with a lot of experience ...
3
votes
1answer
204 views
Why does glass break at the line where you score it?
Why does it take such a small incision for the glass to break at that spot? Why is the structural strength of the material influenced by such a small imperfection?
2
votes
1answer
72 views
Is shear elasticity the same as shear modulus?
I've encountered both the terms "shear elasticity" and "shear modulus". Are these the same?
1
vote
1answer
84 views
Why can we analyse force balance on a dislocation?
Dislocation (like screw or edge dislocation) is not a 'real' thing, while Newton's laws only apply to a real object (no matter macroscopic, like stars, or microscopic, like atoms).
In the derivation ...
4
votes
1answer
531 views
Physical meaning of elastic constants of a monoclinic crystal
For the elasticity of a material, Hook's law can be written in tensorial form as:
$$\sigma = \mathsf{C}\, \varepsilon$$
where $\sigma$ is the Cauchy stress tensor, $\varepsilon$ is the infinitesimal ...
5
votes
2answers
6k views
Hollow Tube Stronger than Solid bar of same Outside Diameter (O.D.)?
I was listening to some co-workers talking about problems meeting stiffness requirements. Someone said that even with a solid metal rod (instead of the existing tube) we could not meet stiffness ...
2
votes
0answers
702 views
What is the cause of strain hardening and strain softening?
Why is it, that - if displayed in a strain/stress-diagram - the curve will at first be linear, and then change into a "curved shape", where it will first decrease again, and only later increase again? ...
