Implict vs Explicit Analysis | What is the difference between Implicit & Explicit Analysis | GRS
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- Опубликовано: 22 авг 2024
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Demonstration of Implicit & Explicit Analysis in Finite Element Analysis. LS-Dyna & ANSYS can be used for either Implicit or Explicit Analysis.
IMPLICIT ANALYSIS: No effect of mass (inertia) or of damping,
Static analysis is done using an implicit solver,
solution of each step requires iterative solutions to establish equilibrium within a certain tolerance, Time steps are generally larger than explicit time steps, Requires a numerical solver to invert the stiffness matrix once or even several times over the course of a load/time step, which is expensive for large models.
EXPLICIT ANALYSIS: Mass/inertia and damping are included,
Dynamic analysis can be done via the explicit solver,
No iteration is required as the nodal accelerations are solved directly, No inherent limit on the size of the time step, Time step must be less than the Courrant time step, Dose not require matrix inversion, Handles contact and material nonlinearities with relative ease, Once accelerations are known at time n, velocities are calculated at time n+1/2, and displacements at time n+1, from displacements comes strain, from strain comes stress & the cycle is repeated.
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Yes the video was good . Nice presentation. and good effort in scripting.
adasldvasjda
Brilliant comment sir,😀
Why are you speaking at 5kbps?
I always watch your videos at 1.5 speed
hahaha still need to raise the speed to 1.75
2x is better
@@bilalzaman498 so true haha
same here
Here 3 times
One thing I do not like about Indian education system is that we don't solve a problem as we explain these examples. What am I supposed to do with the theory when the theory is so abstract?
this marks the end of watching the your full playlist of 33 videos T.T thank you and I have learned alot!
while mentioning the difference between implicit Vs Explicit at 2:10 .... in implicit it is said that no mass or inertia effects are included but in Linear Static G-Load analysis or Inertia Relief analysis , it is mandatory to mention material density ( solver Will Internally compute total mass ),,,,but g-load or inertia relief analysis ,,or normal modes analysis are solved with implicit method (Jus a system of equations)... jus a question ,,,
Iam working on modeling of extrusion process .. which type of analysis should I use and what contact conditions should I edit ?