You have gone into this subject with much more concreteness and clarity than other videos on youtube so I will thank you for that, but one thing that I wish you had gone into as well is the actual bending of a material when force is applied on one side but not uniformly so. Your example of cutting out a coin kinda approached the topic a little bit but didnt adress it. What happens when I apply a certain point force along the length of a steel beam? How would I calculate the degree to which it would bend, the arc created by the bending etc any keywords that I should look out for as I research this topic?
That is a topic that is covered under "strength of materials" in mechanical engineering. A topic we'll be covering in the future in our mechanical engineering section.
and the more you compress a material there is a limit because essentially the further you compress a material eventually you will end up fusing atoms together to make new materials.
Your videos are great. I was just wondering what happens to the material if the pressure exceeds the force it can take. Theoretically if you keep increasing the bulk stress the volume keeps decreasing indefinitely, but surely there is a limit to how much the material can take? Thanks.
The pressure material can take is absolutely enormous. Only at extreme pressure, much beyond what we can create, the electrons can be pushed into the nuclei such that you end up with nuclear material only such as in a neutron star.
Would it still be valid to use the bulk modulus if different amount of force is applied for different faces? E.g. on the cube you drew in the video, say that on the top face, there was 2F amount of force applied, while on the left face, there was 3F amount of force. For the remaining faces, F amount of force is applied. Would it still be valid to use the bulk modulus to calculate the volume change, or does the amount of force applied to each face of the object HAVE to be the same? Thank you :-)
You can make the size of the cube sufficiently small so that there is no difference between the faces of the cube. That is how it is meant to be considered.
At 4.45 - can someone explain how the inverse works at that point. I am not sure how the "p -pressure" gets to the denominator. I know it's just algebra, but I don't know that rule? I understand how to solve a fraction divided by a fraction (by flipping one side and cross multiplying), but I don't understand the inverse of a term multiplied by a fraction. Can someone help? Thanks.
It's actually depending on the mechanical response of the material. A perfectly elastic material would release all its potential energy after compression, wouldn't it ? Heating is often seen in case of viscoelastic materials, where creep function isn't simply the Heaviside function.
Sometimes it just really helps to see somebody explain it as opposed to reading it on a page.
Thanks a bunch.
Yes, I wish we had the internet when I went to school...
well who knows? some are just born genius.... you are one of them,sir
7 years later and your teaching is still one of the best.
Thanks! And thank you for being one of our first viewers.
8 years later and his teaching is still one of the best.
Really useful video- actually answers questions no one else on the internet answers explicitly. Thnx a lot :)
Mr. Professor it is claimed that water is incompressible. Now I know that it is. Amazing.
In everyday life that is true, but at the bottom of the Mariana trench (about 11 km down) water is compressed to 95% its volume at the surface.
After 10years😱
It still help me in my semester exam
Glad you found our videos.
Thanks for giving everything simple and brief, I hope that you can show more the theory concept for particular problem
i am from india great classes
Welcome to the channel!
great class!!! million thanks from Costa Rica!!!
You have gone into this subject with much more concreteness and clarity than other videos on youtube so I will thank you for that, but one thing that I wish you had gone into as well is the actual bending of a material when force is applied on one side but not uniformly so. Your example of cutting out a coin kinda approached the topic a little bit but didnt adress it. What happens when I apply a certain point force along the length of a steel beam? How would I calculate the degree to which it would bend, the arc created by the bending etc any keywords that I should look out for as I research this topic?
That is a topic that is covered under "strength of materials" in mechanical engineering. A topic we'll be covering in the future in our mechanical engineering section.
Wow! I didnt even really expect to get an answer from you to be honest. Thank you and Im definitely looking forward to your future content
and the more you compress a material there is a limit because essentially the further you compress a material eventually you will end up fusing atoms together to make new materials.
I can’t remember, Fe 170Gpa bulk modulus, is that for 1% or 100% compressed .
The bulk modulus is equal to the ration of the stress/strain = (F/A) / ( - delta V / Vo)
@@MichelvanBiezen I used a online calculator it’s 100%
You wouldn’t happen to know what the S4 is in this, 1 m2 kg / s4 equation is .
Your videos are great. I was just wondering what happens to the material if the pressure exceeds the force it can take. Theoretically if you keep increasing the bulk stress the volume keeps decreasing indefinitely, but surely there is a limit to how much the material can take?
Thanks.
The pressure material can take is absolutely enormous. Only at extreme pressure, much beyond what we can create, the electrons can be pushed into the nuclei such that you end up with nuclear material only such as in a neutron star.
Michel van Biezen very interesting! Thank you!
Would it still be valid to use the bulk modulus if different amount of force is applied for different faces? E.g. on the cube you drew in the video, say that on the top face, there was 2F amount of force applied, while on the left face, there was 3F amount of force. For the remaining faces, F amount of force is applied. Would it still be valid to use the bulk modulus to calculate the volume change, or does the amount of force applied to each face of the object HAVE to be the same?
Thank you :-)
You can make the size of the cube sufficiently small so that there is no difference between the faces of the cube. That is how it is meant to be considered.
At 4.45 - can someone explain how the inverse works at that point. I am not sure how the "p -pressure" gets to the denominator. I know it's just algebra, but I don't know that rule? I understand how to solve a fraction divided by a fraction (by flipping one side and cross multiplying), but I don't understand the inverse of a term multiplied by a fraction. Can someone help? Thanks.
If B = - p Vo / delta V then 1/B = - delta V / p Vo Essentially to take the inverse of a fraction you simply flip the fraction upside down.
YOU ARE THE BEST
Thank you sir!! Do you have a video on stress-strain diagrams?
sir,during compression is there any heat is produced on that material
+Vinoth Axus That is a good observation. The answer is yes, assuming that part of the work done compressing the object is converted to heat.
It's actually depending on the mechanical response of the material. A perfectly elastic material would release all its potential energy after compression, wouldn't it ? Heating is often seen in case of viscoelastic materials, where creep function isn't simply the Heaviside function.
Is there any material with positive bulk strain? In order words, Is there any material when apply bulk stress, it actually expand?
+Kashif Javaid I am not familiar with any.
which strength of material book is best reference?
Sorry, I cannot endorse a book.
So bulk stress it mean a pressure given in any direction? Like all over the cube
That is correct.
thank you sir!
That's Great
Very nice to video
Thanks a lot
حلو
1:45 the more you squeeze the electrons close together. LOLz
hello