# Questions tagged [stress-strain]

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### Compute stress tensor in finite element simulation

I have implemented a finite element simulation using a tetrahedral mesh that minimizes a linear elasticity potential energy. Among the main quantities I compute for the simulation is the deformation ...
137 views

### Making sense of the stress tensor for elastic deformations

I've seen this kind of formula a number of times, in the context of elastic deformations. $$-\nabla \sigma = f$$ whete $\sigma$ is "the stress tensor" and $f$ is force. I never understood it even ...
100 views

### Why does an axially loaded column break along a 45 degrees plane?

In this video, at 7:57, the speaker mentions that columns under compression roughly break along a plane that is at 45 degrees to the axis of loading. If this is true, can someone explain why this ...
2k views

The images below are from "Strength of materials" book by Timoshenko. As evident from the text, the author states that stress on the cross section pq can be resolved into normal stress and shear ...
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### A Good Book for Solid Material properties

I want to know a book which provides all solid material properties: Linear/Non-Linear Stress-Strain Data, Thermo-Elastic data (with specific heat function of temperature)... I will need them for ...
316 views

### Calculate the stress tensor on the surface of a tube

I am studying engineering and I was doing some preparation for the exam but stumbled accross the following problem: I would know how to solve task 2-4 but I am stuck at task 1. I do have multiple ...
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### Curvature of a beam when subjected to an axial force

How do you calculate the curvature of a beam due to any forces acting parallel to the beam? Intuitively, a beam in real life would bend perpendicular to the force to form an arc. How is this ...
814 views

### Strain on a steel wire explanation

I want to ask a question about strain in a steel wire that I read in a book titled Advanced Physics by John Miller. A passage of the book on Materials reads: Consider 2 steel wires being stretched by ...
378 views

### Shear stress of a suspended sphere in a viscoelastic fluid

What I am trying to solve right now is that I have a magnetic particle (nanoparticle to be exact) floating in liquid that is viscoelastic and apply sinusoidal magnetic field. The applied magnetic ...
58 views

### Why does a rotating flexible disk have wave shape?

I found a video on which they shatter CD with a high RPM tool. Before the CD shatters it has a wavy shape, so I guess an axial force shatters the CD instead of a radial force, probably some kind of ...
140 views

### Thermal expansion stress and strain [closed]

I'm having trouble with this question: https://i.imgur.com/rWK0RNI.png and this is the work i've done so far: https://i.imgur.com/wy0IeTQ.jpg Am I going along the right lines? It seems its a 3 ...
3k views

### Solid Mechanics — how to find pure shear stress state?

I have a question regarding Solid Mechanics and Mohr's circle. In my test today, we had a plane stress state represented in a Mohr circle which was not centered at the origin. The question asked to ...
2k views

### How to find increment in length of rope due to its own weight?

I used stress/strain = Young modulus and am getting mgl/AY. . where m=mass l=length A=cross-sectional area and Y= young modulus.The correct answer is mgl/2AY. Where is my mistake?
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### Why moving plunger in cylindrical tube can be considered as plain stress condition?

The plunger moves in the tube as you can see in the picture. This situation is plane strain, but i don't see it, i mean there are stresses in all directions so how is it possible to view this as plane ...
133 views

### Pressure of electrons in a metal

Suppose we apply a tensile/compressive stress of, say, 2 atm on a metal rod. If we consider a metal as consisting of electronic and lattice subsystems, could we say the the pressure of the conduction ...
171 views

### How to determine the increment term of normal and shear stress in infinitesimal cube ?

Consider a solid body, if it is in equilibrium then every infinitesimal part of the body is in equilibrium so i take an infinitesimal cube with side lengths, $dx$, $dy$ and $dz$ and try to write the ...
573 views

### What's the difference between critical load and yield stress?

So far, I have learned of three quantities that are related to the failure of a beam (axial and longitudinal loads). The first illustrates the stress under which balsa wood will undergo plastic ...