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Strain Gradient Plasticity

Submitted by Mubeen on
research
Finite Element Method
strain gradient plasticity

Hi all,

I have a strange question that has puzzled me since last almost one year.

There are many SG-plasticity models in the technical literature, sometimes categorized as lower-order or higher-order models.

The problem is :

the constitutive models include the gradient of plastic parameters (e.g. plastic slip).

Abaqus or COMSOL

Submitted by weiwei on
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Hello 

 I am a freshman to iMechanica, I have a question and hope to get some help. I am currently having a project analyzing hydraulic fracture propagation path. And I would like to build up a finite element model use either Abaqus or COMSOL. I  am wondering which software would be more appropriate for this reservoir geomechanic research project. Thanks!

 

Weiwei

Solid/Fluid Mechacnics

Submitted by yaronben on
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Plasticity

Hi,

In my research i am trying to develop a new model for plastic deformation, and i suspect there is a strong similarity between

plasticity and turbulent flow !.

My question is: if there is workd done trying to apply Reynolds decomposition (Reynolds Stress) to the governing equations and solved plasticity problem in Solids?

thanks,

Yaron B.S.

Solid/Fluid Mechacnics

Submitted by yaronben on
research
size scale dependent plasticity

Hi,

In my research i am trying to develop a new model for plastic deformation, and i suspect there is a strong similarity between

plasticity and turbulent flow !.

My question is: if there is workd done trying to apply Reynolds decomposition (Reynolds Stress) to the governing equations and solved plasticity problem in Solids?

thanks,

Yaron B.S.

Nonlinear geometric effects in mechanical bistable morphing structures

Submitted by zichen on
research
elasticity
mechanical instability
Geometric nonlinearity
bistability
thin structure
edge effect

Bistable structures, exemplified
by the Venus flytrap and slap bracelets, can switch between different
functional shapes upon actuation, and have important applications in
mechanical/electro-mechanical devices ranging from bio-inspired robots to
deployable aeroplane wings. Despite numerous efforts in modeling such large
deformation of shell structures, the roles of mechanical and nonlinear geometric
effects on bistability remains elusive. Closely related, emerging challenges
include modeling the spontaneous curving and buckling of thin objects such as

Building and Environment Best Paper Awards - winners announced

Submitted by Laure Ballu on
research
Computational Fluid Dynamics
simulation of cross-ventilation
infection risk assessment
penetration factor

The 2012 Best Paper Awards from Building and Environment go to:

• R. Ramponi, B. Blocken,

“CFD simulation of cross-ventilation for a generic isolated building: Impact of computational parameters”

• S. Yin, G.N. Sze-To, Christopher Y.H. Chao,

“Retrospective analysis of multi-drug resistant tuberculosis outbreak during a flight using computational fluid dynamics and infection risk assessment”

• Chun Chen, Bin Zhao, Wanting Zhou, Xinyi Jiang, Zhongchao Tan,

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