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Question about Anisotropic Plasticity models (Hill48)

Submitted by Aleksander Marek on

Dear all,

Recently, I've started working on developing effective algorithm for extracting constitutive parameters from full-field measurements for anisotropy plasticity. Our first reference model was chosen as Hill48 due to relatively simple form, popularity etc. Since we are new to that topic we had discussion with my supervisor about nature of anisotropic plasticity and here are some crucial points.

Modern and open finite element code

Submitted by likask on

Hello, 

MoFEM is open and free finite element code. See short video showing how easy you can install code form scratch https://youtu.be/6opfKER7JHA. MoFEM web page is avaliable here http://mofem.eng.gla.ac.uk. If you are intersted in contribute to MoFEM code or simply use it let us know. Feel free to aks any question.

ICF14 – Minisymposium on Mixed Mode Fracture in Engineering Materials

Submitted by Majid Ayat on

I am writing to respectfully inform you that Professor Filippo Berto and I are organizing a mini-symposium called “Mixed Mode Fracture in Engineering Materials” as part of the “14th International Conference on Fracture - ICF14” to be held in Rhodes, Greece, June 18-23, 2017.  More information about the mini-symposium can be found in the flyer attached.

Nine papers about fatigue modelling of short fiber composite

Submitted by Atul Jain on

Recently, we have published a series of nine papers about modelling fatigue and damage in short fiber composites.  Together, they provide a complete description of modelling of such materials including wavy fiber composites; starting from appropriate homogenization method to component level fatigue simulation. Discussion and feedback on the papers is welcome.

★Full PhD scholarship at Curtin University, Australia (Structural Engineering)

Submitted by cwstj_cn1 on

The candidate will work with Prof. Hong Hao and Dr. Wensu Chen in the area of structural Engineering on an Australia Research Council (ARC) project regarding development of sandwich composite structure against blast and impact loading.

 

Graphene is softer to bend when stretched and bent and harder to stretch when bent and moderately stretched

Submitted by Antonino Favata on

 

In the attached paper, we have shown that concomitant bending and stretching, whatever their value, concur to make bending stiffness decrease; moreover, concomitant bending and stretching make the stretching stiffness (or the Young modulus) increase until the applied forces reach a threshold value, then they make it decrease. Said differently, graphene is softer to bend when stretched and bent and harder to stretch when bent and moderately stretched.

Writing UHYPER for photo-thermal sensitive hydrogels described in the thermodynamic framework?

Submitted by Arash Krg on

 Hello

I`d like to write a UHYPER for photo-thermal sensitive hydrogels described in the thermodynamic framework. But the photo-chemical term in the energy equation is 7order greater than the others. The other terms are related to stretch and mixing energy they exist also in the temperature sensitive hydrogels energy equations and their UHYPER is valid.  I have checked all the coefficients, their orders are all correct.

Is it something wrong with modeling, or I have made a mistake?