finite element analysis

I hope some of you will find our recent paper in the Journal of the Mechanics and Physics of Solids interesting. The Abaqus user element (UEL) subroutine developed to implement strain gradient plasticity theories with energetic and dissipative higher order stresses (Gudmundson 2004, Fleck and Willis 2009) can be downloaded from www.empaneda.com/codes

The role of plastic strain gradients in the crack growth resistance of metals

Emilio Martínez-Pañeda, Vikram S. Deshpande, Christian F. Niordson, Norman A. Fleck

I hope some of you find this work interesting, the code with the cohesive zone model for fatigue can be downloaded as a user element (UEL) subroutine for Abaqus from empaneda.com/codes

A cohesive zone framework for environmentally assisted fatigue

Susana del Busto, Covadonga Betegón, Emilio Martínez Pañeda

Engineering Fracture Mechanics (2017)

http://www.sciencedirect.com/science/article/pii/S001379441730098X

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

Dear All,

I'm trying to get strains in some specific points (along a path) from the xy-Cartesian coordinate system to a local x'y'-Cartesian coordinate system rotated through an angle (theta) which means transform the strains (Ex,Ey) to (Ex',Ey') as described in the attached figure, something I usually do manually with Mohr's circle and I wonder if I can do it directly with Abaqus ?

Thank you in advance !

Regards.

Mohammed.

Applications are invited for 2 PhD position at the University of Limerick, Ireland.

Both are funded through the EU Marie Curie Early Stage Researcher Programme.

SALARY: €37,903 p.a. (plus family allowance of €4,589 p.a. where appropriate in accordance with Marie Skłodowska-Curie programme rules).

Topic: Improving the crashworthiness of composite transportation structures

To apply: Apply online at http://www.ul.ie/hrvacancies/

Closing Date: Friday, 11th November 2016, 12 noon, Irish Standard Time.

Strain gradient plasticity modeling of hydrogen diffusion to the crack tip

E. Martínez-Pañeda, S. del Busto, C.F. Niordson, C. Betegón

International Journal of Hydrogen Energy

http://www.sciencedirect.com/science/article/pii/S0360319915315913

Shape memory alloys (SMAs) are intermetallic alloys displaying recoverable strains that can be an order of magnitude greater than in traditional alloys due to their capacity to undergo a thermal and/or stress-induced martensitic phase transformation. Since their discovery, the SMA industry has been dominated by products for biomedical applications with geometrically small feature sizes, especially endovascular stents.