Example 10.2 How to use Abaqus surface-based CZM elements to simulate delamination of DCB beam
Example 10.2 follows Example 10.1, to demonstrate how to use surface-based CZM elements to simulate the delamination of a double cantilever beam consisting of two laminas bonded by a very thin layer of adhesive. The adhesive layer of the previous example is removed and redefined as an interaction between the coincident surfaces of the two layers of the laminated beam. Element-based cohesive modeling is replaced by a surface-based cohesive model. Learn how to use the Display Group Toolbar. Additional details in the textbook "Finite Element Analysis of Composite Materials Using Abaqus" Multilingual CC available.
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Table of Contents:
00:00 - Introduction
00:12 - Description
00:47 - Rename the model
01:01 - Save as
01:12 - Edit the assembly
01:22 - Remove surfaces adhesive
01:34 - Interaction
01:46 - Delete adhesive layer
01:56 - Regenerate Assembly
02:01 - Mesh
02:15 - Partition
02:26 - Partition now
02:47 - Re-mesh
02:54 - Assembly
02:56 - Replace Selected
03:07 - Select the top layer
03:17 - Edit surface "top"
03:33 - "Bond" set
03:56 - Replace all
04:07 - Interaction
04:29 - Cohesive properties
04:39 - Cohesive Stiffness
05:14 - Beam Width
05:24 - Damage initiation
05:52 - Damage evolution
06:06 - Fracture Energy
06:23 - Stabilization
06:38 - Create the Interaction
07:19 - Job
07:40 - Results
07:47 - Animate
08:05 - Plot
09:15 - End card
Пікірлер: 18
Thank you very much professor Barbero.
@EverBarbero
4 жыл бұрын
You are very welcome
Hello Professor, I have force vs displacement results from a pull test. The pull tests were performed on 2 similar materials bonded by an adhesive. How do I convert it to a Stress vs Displacement plot to get the traction-separation constants?
Dear Prof. Barbero, I am looking to discuss FEM models for simulating coating delamination in scratching scenario. Do you have any work in that regard? Numerical models?
@EverBarbero
3 жыл бұрын
Sorry, I don't.
Dear professor, For failure criteria TMSC is ok or one should go for Damage mechanics and CZM also, is all criteria are necessary to check. Also is failure criterion depends on manufacturing process like is it suitable to use TMSC for VRTM(Vaccum resin transfer molding) processed composites. Thank you Professor
@EverBarbero
4 жыл бұрын
TMS is OK for preliminary design. Once you have finalized your decision about the material, LSS,thickness, everything, then you do "detailed analysis" and then you may or may not need more powerful damage criteria. That is how my books are organized. "Introduction to Composite Materials Design" is for preliminary design. You should study chapter 7. Then, "Finite Element Analysis of Composite Materials Using Abaqus" is for detailed analysis. There may be an indirect relation between manufacturing process and FC, but that is too sophisticated at the preliminary design stage. If it is laminated, then use TMS. Read my two papers at the SAMPE Conference, 2018 and 2019. You can download them from my list of publications on my website, or ask me to send them to you.
@VivekDhimole
4 жыл бұрын
@@EverBarberoDear Professor, Thank you, are these papers correct. 1. E. J. Barbero. Universal knockdown factors for strength of carbon/epoxy laminates. In CAMX 2018, 2. E. J. Barbero. Universal carpet plots for stiffness and strength design. In CAMX 2017.
Hi . How to determine the parameters like the penalty stifnesses and Fracture energy? Also if someone could tell me can it be determined from the experimental DcB curve F vs Disp curve.
@EverBarbero
2 жыл бұрын
Yes, it can be done from the opening vs load plot. Wait until the 2nd Edition of the book appears soon, it will be there, explained in full detail.
@ahmedkhaled-du3be
Жыл бұрын
@@EverBarbero hello Proff. Ever did the 2nd Edition of the book has been finished
Hi how to define 'element based surface' for user defined elements?
@EverBarbero
2 жыл бұрын
I don’t know what a “element based surface” is, That is not what I used, which is a “surface based element “, not the same thing.
hello professor ,how can i calculate the fracture energy parametre for damage evolution?
@EverBarbero
3 жыл бұрын
OK?
@miroamir1203
3 жыл бұрын
thanck you very much professor Barbero , for example if we have material properties of un adhesive from the manufacturer sheet how Can I find the fracture energy ?
Hi how to define 'element based surface' for user defined elements?
@EverBarbero
2 жыл бұрын
See previous answer