Wave propagation with and without the infinite elements in the Abaqus
In this example we intend to simulate the wave propagation using and without using the infinite elements in the Abaqus software and survey the effect of infinite elements on the obtained results
Actually, we intend to compare the results gained from using the Model having infinite element with that without infinite elements
In this example, a pulsing loading in form of Cosine Is applied to the Model the diagram of which can be observed here
First ,we solve this question without using infinite elements
If we do not use infinite elements , when the propagated wave reaches the bottom of the model, then returns to the model and does not go out of the model
Actually , the wave reflection phenomenon is clearly observed
In fact when the wave reaches the end, it is reflected and returns to the model and does not leave the model
In other words , the wave reflects from above downwards and vice versa again and again , and bounces back into the model. You actually observe a repetitive to-and-fro movement
In next step ,we solve this question with using infinite elements
If we use the infinite elements , the propagated wave reaches the bottom of the model and exits out of it and doesn’t get back to the model again. Here , there is no wave reflection available
In fact, the infinite elements can eliminate wave reflection phenomenon
Actually when the wave reaches the bottom of the model , the infinite elements absorb the energy and wouldn’t let it return to the model again
In this diagram ,you can observe the energy having been absorbed by infinite elements
As it can be observed , about 41 Joules of energy were absorbed by infinite elements
As you observe when we use infinite elements , the energy is absorbed well , but when finite elements are not used , no energy will be absorbed , which can be clearly observed here
In fact , if you use infinite elements in the model , the energy will be absorbed quite well and will not reflect back to the model
Duration :33 minutes
The language of the video : English
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