Input variables used in Abaqus UMAT: STRAN, STRESS and DSTRAN
I wonder the mathematical expressions for the variables: STRAN, STRESS, and DSTRAN which are used in UMAT.
Blog posts
Funded PhD Position, Automation of Forming of Wing Skins, Montreal, Canada
A fully funded PhD Position in mechanical engineering is available at Polytechnique Montreal in Canada to automate the peen forming of aircraft wing skins.
Peen forming automation through in-process 3D shape measurement
A theoretical study on the piezoresistive response of carbon nanotubes embedded in polymer nanocomposites in an elastic region
Herein, we report a theoretical study of polymeric nanocomposites to provide physical insight into complex material systems in elastic regions. A self-consistent scheme is adopted to predict piezoresistive characteristics, and the effects of the interface and of tunneling on the effective piezoresistive and electrical properties of the nanocomposites are simulated. The overall piezoresistive sensitivity is predicted to be reduced when the lower interfacial resistivity of multi-walled carbon nanotubes (MWCNTs) and the higher effective stiffness of nanocomposites are considered.
Measuring the relative density of open cell metal foams
Hello,
I would like to know how to measure the density of open cell porous iron foam. I am studying the mechanical behavior of pure iron foams for which I need to compare the relative densities of different foam samples. Could the density of the foams be simply calculated by the mass over the bulk volume (volume of the struts + volume of the pores) of the foam? Can I use Archimedes principle to calculate the foam density given that I have open cells? What is the best method to calculate the foam density?
Best Regards,
Reza
Bioinspired Composite Microfibers for Skin Adhesion and Signal Amplification of Wearable Sensors
Published in Advanced Materials: http://onlinelibrary.wiley.com/doi/10.1002/adma.201701353/abstract
Recent Advances in Skin Penetration Enhancers for Transdermal Gene and Drug Delivery
Published in Current Gene Therapty: https://www.ncbi.nlm.nih.gov/pubmed/28494734
Designing Nanostructures for Phonon Transport via Bayesian Optimization
Published in Physical Review X: https://journals.aps.org/prx/abstract/10.1103/PhysRevX.7.021024
PhD position available on 4D printing of intelligent marine structures at NTNU Trondheim
Please check out the official announcement at:
https://www.jobbnorge.no/en/available-jobs/job/138013/phd-position-in-4…
PhD positions in the area of materials modelling and characterization: Western University, Canada
PhD positions are available:
I am looking for talented, self-motivated, and enthusiastic students with MSc degree in mechanical or materials engineering. Students with a background in any of the following areas are recommended to apply:
- Solid mechanics and finite element modelling of materials
- Crystal plasticity modelling of polycrystals
- Materials characterization
The selected candidates are expected to start no later than January 2018.