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Crystal plasticity

Input file for the CPFE VUMAT in Nonlinear finite elements for continua and structure

Submitted by rctron on
Crystal plasticity
nonlinear finite element analysis
ABAQUS
Ted Belytschko
book

I am learning crystal plasticity and its implementation as VUMAT subroutine from the book Nonlinear finite elements for continua and structure. I am aiming to gain more insight about the implementation by studying the poly-slip, rate-dependent, single crystal plasticity subroutine provided in the solution manual.

However, I couldn't reproduce the example in the book successfully, as I believe I have made errors in defining the material properties in the Abaqus input file. So, can someone please provide the input file for the associated VUMAT subroutine?

How to include temperature effects on the shear rates in Dr. Huang's crystal plasticity code

Submitted by rctron on
research
Crystal plasticity
CPFEM UMAT Dr Huang
ABAQUS UMAT

I am using Dr. Huang's crystal plasticity code for an adiabatic process where temperature increase due to deformation need to be calculated. Dr. Huang's CP UMAT code does not consider the temperature effect of shear rate or hardening. Is there a way to include temperature effects in the current UMAT code?

http://www.columbia.edu/~jk2079/Kysar_Research_Laboratory/Single_Crysta…

Research Assistantship Positions Available in Multiscale Materials Modeling at the University of Alabama in Huntsville

Submitted by Jason Mayeur on
job
Crystal plasticity
multiscale modeling

Positions are available in Dr. Jason Mayeur's research group in the Department of Mechanical and Aerospace Engineering at the University of Alabama in Huntsville. Preferred candidates will have earned an MSc degree in Mechanical Engineering or a closely related field, and have a solid background in theoretical and computational mechanics. Ideal candidates will also have prior experience in finite element modeling and computer programming.

Applicants should directly contact Dr. Mayeur:
jason.mayeur at uah.edu    

Dislocation density informed eigenstrain based reduced order homogenization modeling: verification and application on a titaniumalloy structure subjected to cyclic loading

Submitted by xiangzhang on
research
multiscale modeling
reduced order model
Titanium
dislocation density
Crystal plasticity

https://doi.org/10.1088/1361-651X/ab602e

Link to author's personal copy

Abstract:

Two open PhD positions in multi-physics process and performance modeling of alloys at the University of Tennessee

Submitted by Timothy Truster on
job
Crystal plasticity
thermomechanical
creep

We have two open PhD position starting in the Fall semester 2020 at the Computational Laboratory for the Mechanics of Interfaces at the University of Tennessee - Knoxville (http://clmi.utk.edu). First research topic centers upon the modeling of texture evolution during processing (e.g. cogging and rolling) of titanium alloys using crystal plasticity and Fast Fourier Transform methods to couple the mesoscale and specimen scale.

Postdoc position available at Columbia University in the City of New York

Submitted by WaiChing Sun on
job
polycrystal
energetic materials
Crystal plasticity
hot spot

We have one or more postdoc positions available, to be filled immediately, in my research group. We are looking for postdocs in the broad area of computational mechanics.  Candidates should have expertise in modeling dynamic responses of path-dependent materials. Our project is specifically focused on the development and validation of multiscale models for energetic/porous/polycrystalline materials across length scales. More details will be provided to interested candidates. 

Critical porosity in the fatigue of additively manufactured IN718 via crystal plasticity modeling

Submitted by rajan_prithivi on
research
Critical Porostiy
Fatigue
Crystal plasticity
additive manufacturing

https://doi.org/10.1016/j.matdes.2018.04.022

Highlights

1. Critical porosity is estimated in additively manufactured IN718 via crystal plasticity.

2. Porosity is characterized using high resolution tomography.

3. Non-local damage indicator parameters identify the location of fatigue crack initiation.

4. The critical pore size is 20 μm in IN718 with average grain size of 48 μm.

Representative volume element (RVE) based crystal plasticity study of void growth on phase boundary in titanium alloys

Submitted by Amir Siddiq on
Crystal plasticity
phase boundary
void growth
Titanium alloys
Dual phase alloys

Hi All,

We have published an interesting short article on void growth in dual phase titanium alloys. More detailed results are currently under review and will be reported in near future.

https://www.sciencedirect.com/science/article/pii/S0927025619300801

 

Thanks,

Amir

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