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Remeshing in Abaqus/ Explicit

Submitted by tahsinopoz on
software

Hi Dear IMechanica User

I have faced up a problem during micro-scale cutting using abrasives. I am trying to model this process using Abaqus/explicit and with remeshing module. but currently there doesnt exist any remeshing technique in abaqus/explicit. Could you please suggest the way for doing this simulation by using remeshing technique in Abaqus/explicit. Abaqus/standard is not helpfull to model cutting simulation. this is because i am using Abaqus/explicit by the way.

 

I am awaiting your valuable suggestions and helpfull informations.

Jinqiang Li

Submitted by Jinqiang Li on

    My name is Jinqiang Li. Now I am a study student in Hokkaido University. Next April(2010) I will be a first year Ph.D student (Graduate School of Engineering, Division of Human Mechanical Systems and Design, Research Group of Micromechanical Systems). I got my Master degree in General Mechanics and Mechanics Foundations from Harbin Institute of Technology. I know that most of you are very learned man in mechanics, I hope I can enrich my faculty and knowledge from your wisdom and insights.

Shell vs. brick elements in buckling analysis

Submitted by Anonymous (not verified) on
industry

Dear All:

I have a structural problem which deals with "Buckling" analysis of a boom with a rectangular cross-sectional area

and 0.25 in. thickness.

Can I use brick element (8 nodes) instead of shell element to simulate buckling of this type of structure? 

Thank you for your insight.

David.

International Journal of Applied Mechanics (IJAM) Vol.2 No.1

Submitted by zishun liu on
research
applied mechanics

Forthcoming papers of International Journal of Applied Mechanics (IJAM) Vol.2 No.1:  

1．“An Alternative Explanation of The Effect of Humidity In Gecko Adhesion: Stiffness Reduction Enhances Adhesion on A Rough Surface”, Bin Chen (McMaster University, Canada) and Huajian Gao (Brown University, USA). 

software for strain field measurement in coupon tension tests

Submitted by schuffe on
research
strain field measurement open source

HI,

i am looking into strain field measurement for coupon tension tests for the purpose of correlation to fea results . a collegue told me that there is an open source project

which calculates strain field from camera images. does anybody know something about it?

Cheers,

schuffe

Question on non-linear iteration in cases of force-controlled loading and displacement-controlled loading

Submitted by Liu Jinxing on
research

In all textbooks, when iteration methods are introduced, the iterative formula is always H(x)x+f=0, where f is the external force applied on the system. All methods are stated when f is fixed.

Question on the definitions of secant stiffness and tangent stiffness in iterative methods for non-linear problems

Submitted by Liu Jinxing on
research
computational mechanics

Recently, I find that definitions of secant stiffness and tangent stiffness in many books seem pretty confused.Therefore, here I am giving the definitions I think correct, then give my questions on them.

Consider the equation

H(x)x+f=0

(1) Definition of tangent stiffness. As for the above equation, what is the tangent stiffness for some particular value x0?

Let's give the definition according basic knowledge of advanced mathematics. Let's consider the curve H(x)x~x. For this curve, y=H(x)x, so the tangent at x0 is

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