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Mechanics interpretation on the bending stiffness and wrinkled pattern of graphene.

Submitted by Bin Liu on

In this paper we attempt to answer two questions on graphene from a mechanic’s viewpoint: why does this one-atom-thick monolayer have finite bending stiffness to ensure its stability? and what is its wrinkle mechanism? As for the first question, it is found that the repulsive residual internal moment in the bond angle can lead to a nonzero bending stiffness, which makes the graphene flat. Together with long-range attraction among atoms, such as van der Waals forces, a graphene prefers to have a self-buckling wrinkled configuration with many waves.

Acta Mechanica Sinica, Vol 29 issue 5 online now

Submitted by CSTAM_Journal on

Dear everyone!    

The first issue in 2014 (Volume 30, Issue 1) of Acta Mechanica Sinica (AMS) is now online.   

Welcome to this SCI-indexed journal http://ams.cstam.org.cn for rapid publication of your exciting results.

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Share an Excellent Review Paper Published on Advances in Mechanics

Submitted by CSTAM_Journal on

Dear Everyone,

I am so glad coming imechanica to meet everyone of you! I am an editor from Chinese Society of Theoretical and Applied Mechanics, our society mainly publish five mechanical journals(three Chinese and two English). I would like to share recently published English articles for whom might be interested in.

Journal Tittle: Advances in Mechanics

Article Tittle: Complex systems and emergence: How theory meets reality

Author: Jianbo Gao(Wright State University)

Concrete tension damage

Submitted by KHALED GHAEDI on

Hi everyone


Does anyone know about tension stiffening of concrete. Actually I have a problem with getting these values. i have an example of it and I wanna show you to clarify. So, the given information is as follows:


E= 31027 mpa

V= 0.15

Density= 2663 kg/m3

Compressive initial stress= 13 mpa

Compressive ultimate stress= 24.1 mpa

Tensile failure stress= 2.9 mpa


Therefore, for mentioned above "tensile behavior" in terms of dis. is as following: ( concrete damage plasticity )

Create new ( multiple ) parts from existing (single )part in Abaqus

Submitted by sidk1984 on

Hello Everyone,

i am kind of newbie to Abaqus, in learning phase. My question is regarding creating new parts from existing part in abaqus, kind of splitting activity similar to slice feature in ANSYS Designmodeler. As far as my regular activity in Ansys workbench, i require to slice body in designmodeler, to create new volumes, to refine mesh, or to define contacts with different status.have limited access to modeling software, so basically work with simulation software pre processor.

Concrete Damaged PLasticity - Effect of Kc

Submitted by aravindangokul on

I'm trying to develop yield surface of a material for a particular value of hydrostatic stress(since CDP model uses drucker-prager hypothesis).. In user manual, it is given that, for Kc value of 1, i should get a circle, and for Kc value of 0.667, i should get a shape of inverted triangle in deviatoric plane.. But I have tested for 3 values of Kc, 0.667, 0.9 and 1, for all, i'm getting the same inverted triangle in the deviatoric plane. 



*Concrete Damaged Plasticity 

22., 0.33, 1.16, 0.667, 0.