Thank you, Sir, as always. I have 2 questions: 1. You mentioned that the particle diameter is the same for all - wouldn't it be better to make the particle diameter correspond to the size of the RVE while maintaining the same ratio. For example, if the diameter of the particle is 0.05mm for an RVE of sides 0.1, using the same particle size of 0.05mm for an RVE of size 0.2mm seems like an imbalance and lopsided comparison. 2. How can one compare the results obtained in any RVE simulation with experimental results?
Hello Johnson, thanks for the question. Here are what I think: 1. With this sort of RVE size assessment, you want to keep the diameter the same and simply increase the size of the cubic RVE. This is because with RVE investigations, the size of the RVE is something you have to choose. Ideally you want it to be as small as possible for you to get good predictions based on that. The diameter of the particles in this instance is fixed since this is a characteristics of the AlSiC. It is something you can measure from a microscopy study and so a fixed parameter. You simply have to change the overall size of the RVE so that you can quantify, as I did here, the true effect of increasing RVE on other fixed properties of the composite such as Young's Modulus, strength, fracture, post-yield response and so on. 2. For comparing RVE results with experiments, it is better to extract the homogenized properties of say stress and strain from the RVE and then compare directly with experimental data. The essence of homogenization is to obtain say stress-strain plot at the RVE-scale which should equivalently compare with the stress-strain plot at macroscale or structural level of the test material. The approach I use in these RVE modelling is a computational homogenization approach but other approaches can be say asymptotic homogenization which rely on analytical formulations. I hope the above makes sense to you.
Hi. I want to plot crack length of delamination in mode I with vcct method,,I use crack in history output but I don't found it in result why? The crack in history output use just for xfem and integral contour or for all cracks
Thank you Dr. Michael Okereke. Now, i am studying about heat transfer in polymeric composite. so, I want to know how to create code about making RVE code. But, I can't find it. could you tell me code??
Hello, I do not really understand the question. I suppose you want to learn how to write a Python code to create RVEs. If that is the case, then I am unable to help with this. I have a code that can create particulate systems, just look in the description section of my videos.
Thank you very much!!! I wish the author and all the viewers happiness, peace and good health !!!!!!!!
Thanks for your continued support Valera. I appreciate this.
Thank you, Sir, as always. I have 2 questions:
1. You mentioned that the particle diameter is the same for all - wouldn't it be better to make the particle diameter correspond to the size of the RVE while maintaining the same ratio. For example, if the diameter of the particle is 0.05mm for an RVE of sides 0.1, using the same particle size of 0.05mm for an RVE of size 0.2mm seems like an imbalance and lopsided comparison.
2. How can one compare the results obtained in any RVE simulation with experimental results?
Hello Johnson, thanks for the question. Here are what I think:
1. With this sort of RVE size assessment, you want to keep the diameter the same and simply increase the size of the cubic RVE. This is because with RVE investigations, the size of the RVE is something you have to choose. Ideally you want it to be as small as possible for you to get good predictions based on that. The diameter of the particles in this instance is fixed since this is a characteristics of the AlSiC. It is something you can measure from a microscopy study and so a fixed parameter. You simply have to change the overall size of the RVE so that you can quantify, as I did here, the true effect of increasing RVE on other fixed properties of the composite such as Young's Modulus, strength, fracture, post-yield response and so on.
2. For comparing RVE results with experiments, it is better to extract the homogenized properties of say stress and strain from the RVE and then compare directly with experimental data. The essence of homogenization is to obtain say stress-strain plot at the RVE-scale which should equivalently compare with the stress-strain plot at macroscale or structural level of the test material. The approach I use in these RVE modelling is a computational homogenization approach but other approaches can be say asymptotic homogenization which rely on analytical formulations.
I hope the above makes sense to you.
Hi. I want to plot crack length of delamination in mode I with vcct method,,I use crack in history output but I don't found it in result why? The crack in history output use just for xfem and integral contour or for all cracks
Hello, thanks for you query. I am not good with vcct and xfem yet so unable to help you with this query. Good luck with the research.
@@MichaelOkereke thank you
Thank you Dr. Michael Okereke.
Now, i am studying about heat transfer in polymeric composite.
so, I want to know how to create code about making RVE code.
But, I can't find it.
could you tell me code??
Hello, I do not really understand the question. I suppose you want to learn how to write a Python code to create RVEs. If that is the case, then I am unable to help with this. I have a code that can create particulate systems, just look in the description section of my videos.