#ABAQUS
Post-doc and grad student positions available- Colorado School of Mines- fracture & renewable energy focus
Hello fellow mechanicians,
I have immediate and upcoming openings for graduate students and post-docs who have interest and experience in solid mechanics. I am especially in need of someone with Abaqus/FEA experience.
Executing Abaqus from Scilab
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I have managed to adjust a material property to get the best fit to the experimental response using fminsearch in MATLAB, but I lost access to free MATLAB so I have to use something else. I like Scilab, it works for everything I did with MATLAB except this.
Scilab throughs and 'invalid handle' error when executing:
dos('abaqus cae -nogui response.py','-echo');
at the line inside response.py:
Job.submit(consistencyChecking=OFF)
Element based surface for User Element
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How does one define Element based surface for a User defined Element?
Using Abaqus CZM, How can I get crack length for each increment?
When using CZM for crack propagation, for each CZM element, once the separation delta > delta_c, the adhesive is completely damaged, cannot transmit stress. delta_c is the separation on the right side of the bilinear or trapezoidal models. How can I get the length of the crack for each increment of applied displacement or load? I can see that the totally damage element disappear from the Visualization but I need a better way that gives me crack length, not just a picture that shows the crack longer for each increment.
Input file for the Single crystal plasticity subroutine Nonlinear Finite Elements for Continua and Structures by Ted Belytschko
Can anyone provide me with the input file for the example shown in the book Nonlinear Finite Elements for Continua and Structures by Ted Belytschko et al? The poly-slip, rate-dependent, single crystal plasticity VUMAT subroutine that is available publicly is attached in the following link. I have been trying to reproduce the results in Fig. 13.11 to Fig. 13.13. in the book, but am not successful in doing so. Can anyone please provide me with a working example input file for the problem?
Can someone post an example of UMAT and VUMAT for the same elasto-plastic problem?
I want to understand how the stress update algorithm is modified for the different definitions of stress rate in ABAQUS/Standard and ABAQUS/Explicit formulations. I know the relationships, I just want to see how it's coded in a subroutine.
Also, the Hughes-Winget algorithm is used to update the stress defined by the Green-Naghdi stress rate by using the Jaumann rate. How to implement that in VUMAT? Can someone please post an example to clarify these aspects?
PhD Studentship in Mechanics of Materials at University College London
A PhD studentship is available in the Department of Mechanical Engineering at University College London, on the topic of "Detection and Identification of Damage in Composite Fibre/Metal Laminate Structures Using Guided Ultrasonic Waves". It is fully funded (fees + stipend) for UK citizens and EU citizens with UK residency (fees only for international students).
The academic group at UCL has an internationally leading profile and an exceptional publication record, and this project will provide numerous opportunities for high-profile publications and conference presentations. The project involves considerable interaction with other members of the research group, which has a very open, co-operative and friendly culture. The UCL laboratories are very well resourced with equipment, computers, consumables and all that is needed to perform research at the highest standard. The aim is to provide the best conditions for world-leading research.
Accepting applications to fully funded MS or PhD starting in 2021
We are looking for candidates to join the Utah Waves and Architected Materials Group (w.mech.utah.edu). We have fully funded openings for undergrads, MS and PhD. Both full-time and part-time researchers are needed.
How do I count Keyword Blocks in the Abaqus input file?
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The Abaqus documentation, available here:
https://abaqus-docs.mit.edu/2017/English/SIMACAEMODRefMap/simamod-c-inp…
states the following:
Certain keywords must be used in conjunction with other keywords; forexample, the *ELASTIC and *DENSITY keywords must be used in conjunction with the *MATERIAL keyword. These related keywords must be grouped in a block in the input file; unrelated keywords cannot be specified within this block.