I have a question, why no constraint(load collector) is applied? Theoretically without constraint the value of global stiffness matrix will be zero and no solution will exist.
Hi Shashwat, in an inertia relief analysis, the response of the geometry is tested against internal resisting forces caused by inertia. So SPC constraints are not required. However, the solve does create 'Support' type of constraints at the backend. It is also possible to create support constraints manually, but the method to do that is not shown in this video. So essentially, due to these supports, the global stiffness matrix does not become zero. I hope this answers your question!
The setup process is same for every inertia relief analysis despite changes in geometry. Just follow the steps in this video to perform inertia relief on BAJA rollcage.
Yes, you will get the results in that case. However, as all nodes on the struture are moving with same magnitude, the displacement results might be negligible. Furthermore, I do not think the whole struture will be acted upon by a uniform g load in any real life scenario! There will always be a variation in loads applied at different locations on the structure.
@@Aeroswap thanks for reply.. But I didn't quite get your comment about uniform g.. In reality aren't we acted upon a uniform g load as long as we are at the same peripheral line on the earth
Right, we are acted upon by uniform g. But what I am trying to say is that without an unbalance of forces, there cannot be a deformation. Consider a beam element with the same magnitude and direction force applied at both ends. The beam will translate as a whole rather than deflecting. Similarly, constant g will translate the body and there will not be any deformation. I hope you get my point here!
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One of great RUclips channel on FEM I ever seen ❤
Nice! Good to see that you're back with another compelling tutorial!
Thanks Emmanuel :)
Such a great video!
Thanks :)
Great work keep going
Thank you!
Make more videos related to 1D analysis
Would love to learn about it
Thanks for the suggestion. I will work on this topic soon!
Hi brother I love your tutorials, great job! Could you make a tutorial about fatigue-life analysis with obtistruct?
Up
Hi Musa, thanks for the suggestion! I will work on fatigue analysis tutorial soon.
I have a question, why no constraint(load collector) is applied?
Theoretically without constraint the value of global stiffness matrix will be zero and no solution will exist.
Hi Shashwat, in an inertia relief analysis, the response of the geometry is tested against internal resisting forces caused by inertia. So SPC constraints are not required.
However, the solve does create 'Support' type of constraints at the backend. It is also possible to create support constraints manually, but the method to do that is not shown in this video.
So essentially, due to these supports, the global stiffness matrix does not become zero. I hope this answers your question!
@@Aeroswap Thank you
Please make inertia relif analysis on rollcage (baja)
The setup process is same for every inertia relief analysis despite changes in geometry. Just follow the steps in this video to perform inertia relief on BAJA rollcage.
Would you get results if you had applied g load to the whole structure instead of force at the center?
Yes, you will get the results in that case. However, as all nodes on the struture are moving with same magnitude, the displacement results might be negligible. Furthermore, I do not think the whole struture will be acted upon by a uniform g load in any real life scenario! There will always be a variation in loads applied at different locations on the structure.
@@Aeroswap thanks for reply.. But I didn't quite get your comment about uniform g.. In reality aren't we acted upon a uniform g load as long as we are at the same peripheral line on the earth
Right, we are acted upon by uniform g. But what I am trying to say is that without an unbalance of forces, there cannot be a deformation. Consider a beam element with the same magnitude and direction force applied at both ends. The beam will translate as a whole rather than deflecting. Similarly, constant g will translate the body and there will not be any deformation.
I hope you get my point here!
Hi bro.
can you tell me how do you validate your fe results ? like can you show some hand calculations
Can we do dynamic analysis with including inertia relief analysis
Which screen recorder did you using now bro?