How I DETERMINED the BULK MODULUS of a BCC Lattice Structure

This video shows an elegant FEA method for finding Bulk Modulus of Lattice Structures based on a BCC architecture of an ABS polymer material. Here, the theory behind numerical model setup was explained, the model set and ran, and bulk modulus determined. To prove it works, I determined analytically the bulk modulus and this was found to agree with the numerically determined bulk modulus. This approach will be useful for analysis of bulk modulus of heterogeneous media like lattice and syntactic foam structures.
#bulkmodulus #fea #feamethod #3drve #determinebulkmodulus #poissonratio #homogeneousmaterial #heterogeneousmaterial#abaqustutorial #rvemodelling #rve #abaqusmodelsetup #representativevolumeelement #latticestructures #syntacticfoams
Time stamps
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00:00 - Intro
00:47 - Video request comment led to this video
01:14 - Theory of designing numerical experiment to find bulk modulus
02:26 - Dimensions of BCC lattice structure RVE used in the study
03:03 - Reference video to design given BCC lattice structure
04:14 - Creation of surfaces and geometric sets fo rapplying BC and loads
06:43 - Applying adequate boundary conditions
08:10 - Analysis of simulation results to determine K
09:18 - Extracting differential pressure and axial strain terms from simulations
10:00 - Numerical analysis to determine bulk modulus
10:26 - Reflecting on the numerically determined K
10:43 - Extracting the Compressive Young's Modulus
12:23 - Reflecting on what lattices do to the bulk modulus
13:37 - Outro
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1. GenParticles3Dv1: A software for generating random inclusions within a 3D RVE. The inclusions can include: voids, particles, microcapsules, particulates, etc.
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3. PBCGenlite: A lite version of software for applying periodic boundary condition
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4. MontCarlGen2D: A software for creating random inclusions in 2D RVEs
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✔️*Link to Michael Okereke's Finite Element Applications textbook
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Okereke, M. and Keates, S., 2018. Finite element applications. Cham: Springer International Publishing AG. amzn.to/3Bv54Di
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[@yasserhamed6930]

Nice explanation. Can you make video about minimal surfaces. Thanks alot

[@MichaelOkereke]

By minimal surfaces, I believe you are referring to TPMS lattices which can include gyroids. If so, then yes, I have a plan to create such videos in future.

[@NAVDEEPMALIK-ve3sr]

Nice Simuation. Hi sir, could you make video on elastic young's modulus under tensile loading for cellular honeycomb or reentrant structures

[@MichaelOkereke]

Hello Navdeep, thanks for the comment. I have just filled a video on creating cellular honeycome lattice structures. I will publish that soon and hopefully that will help you do the requested here. I will explore re-entrant structures too in a future video.

[@anonymous-bm2kp]

I know Dassault Systemes did publish a micro mechanics plugin to develop RVE's. Can you please review it?

[@MichaelOkereke]

Yes, I know about the micromechanics plugin. I will try and review it in future, once I have tested it out. What would you want to learn from it?