Good day to everyone,
I have constructed scaffolding. For this purpose, I attempted to perform a compression simulation based on experimental compression data, as we are required to input certain properties into a simulation physics.
My question is how can I determine the simulated young modulus and compare it to the experimentally obtained young modulus, even though I am providing the experimental data as input?
Also, I wish to determine the anisotropy properties of the designed scaffold as well.
Thank you in advance.
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Regards
Rajkumar
IIT Kanpur, India
To asses the elastic modulus of a material by experiment, I think the best way is to perform a vibration experiment. The measured frequency of the specimen leads to the elastic modulus.
The buckling calculations are difficult and it can be necessary to take into account the geometry imperfections and the stress-strain curve of the material (elastic-plastic buckling).
best regards
Thank you Bruno Barthelet for your suggestion.
Experimental elastic modulus I have. My concern is that young modulus and initial yield point are required inputs for a simulation model. How can we then compare the simulated result with the experimental one?
Thank you.
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Regards
Rajkumar
IIT Kanpur, India
To determine the simulated Young's modulus and compare it to the experimentally obtained Young's modulus, follow these steps:
Percentage Error = (|Experimental Young's Modulus - Simulated Young's Modulus| / Experimental Young's Modulus) * 100
A low percentage error indicates good agreement between the simulation and experimental data for Young's modulus.
As for determining the anisotropy properties of the designed scaffold, you may need to perform simulations in different loading directions or orientations. Anisotropy refers to the directional dependence of material properties. For example, some materials may have different stiffness or strength properties when loaded in different directions. To analyze anisotropy, you can:
Anisotropic Index = (Maximum Young's Modulus - Minimum Young's Modulus) / Average Young's Modulus
A higher anisotropic index indicates a more significant anisotropic behavior.
By comparing the experimental and simulated Young's modulus values and analyzing the anisotropy properties, you can gain insights into the accuracy and behavior of the scaffold design. Keep in mind that experimental data validation is crucial for ensuring the reliability of any simulation-based analysis.
Thank you Dr. Kristaq Hazizi for your insightful suggestions. You have cleared my doubt regarding the same. But still I have one confusion from point no. 2 (from upper most paragraph). While extracting the simulated young modulus from stress strain curve during the simulation, would it be same as the experimental one have ?
It is because, we are giving the experimental initial yield point as the input into the model, so curve will start to turned from that point only and will gave the same linear elastic region that the experimental one have. So I think young modulus will come same, then how can we compare them ?
Regarding the anisotropy, I fully understand it.
Thank you once again for giving your valuable time.
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Regards
Rajkumar
IIT Kanpur, India
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