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how to apply cyclic loading in ABAQUS (for determing the DEFORMATION MODULUS from PLATE LOADING TEST down a DRILL HOLE

Submitted by srinivasdv on

hi to all,

this is srinivas from IITROORKEE presently doing M.Tech in CIVIL Engg .

my project is

determing the deformation modulus using plate loading test down a drill hole.

 

Journal paper

Submitted by phemanth on
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Hi every one,

    Iam searching for the paper 

    "  charalambides P.G. ,J. Lund, A.G. Evans and R.M. McMeeking(1989),  A test Specimen for determing fracture resistance of     bimaterial interfaces . Journal of Applied mechanics, volume :56, pages 77-82. "

     Iam unable to find this paper. I need this paper for my thesis work. Is there any one find this copy please attach the copy.

Modeling DCB Specimen using Ansys to determine Energy Release Rate

Submitted by Renjith C S on

 

Hi

         Iam working on ansys modelling of DCB specimen to determine the energy release rate. Ihave modeled a CT specimen and determined its SIF. Is it right way to model the DCB by changing the dimensions of CT specimen and making it a DCB specimen?..

How can i find out energy release rate of the specimen?

Iam pretty new to Ansys

THANKS ALL

Problem is using static/riks option

Submitted by sushil on

I have some problem in defining the material properties using UMAT. I want to simulate the cubic stress-strain traction-sepration law. Solution doesn't converge after max load is applied (i.e zero slope of stress-strain plot). I am using riks solver. I have written my stress -strain relationship as below in UMAT file. Please tell me how to converge the solution even after zero slope of stress-strain relationship. Can i make my load factor(lambda) negative in riks option.

 

""STUDY GROUP""

Submitted by Mahdi Kazemzadeh on

This is a great news for all students here in iMechanica! The formation of a study group which will focus on the basic concepts and the facts of daily research, the simple tools that any of us will need at a certain stage. Please see blow the formation of this idea and add your comment, it would be good to know other points of view as we can improve the initial idea step by step.

Berger on Video Solutions for Teaching Mechanics

Submitted by Carl T. Herakovich on

Professor Ed Berger, Univeristy of Virginia Mechanical Engineering, is featured in the Chronicle of Higher Education for his use of web technologies and, in particular, "video solutions" for teaching undergraduate mechanics courses.

New Book on Polymers and Viscoelasticity

Submitted by cbrinson on
I wish to inform the imechanica community about my recent book,  Polymer Engineering Science and Viscoelasticity, Springer, 2008. THe book starts at the beginning and contains both the physics of polymers and the mathematics of viscoelasticity. It is also unique in the history of mechanics in being the (first ever?) father-daughter book. Those interested in polymer mechanics may find this a useful resource! It may be found in your library or further information can be found here

New Graduate Textbook on Micromechanics and Nanomechanics

Submitted by shaofanli on

World Scientific Pub. Co. will soon (2008 Winter) publish a new graduate textbook on Micromechanics and Nanomechanics.  The book is based on a lecture notes that have been used in Berkeley for seven years. Reading of book requires minimum knowledge of continuum mechanics and mathematics, and the book is intended for the first year graduate students as well as those practitioners who have no time to read the literature for self-study.

Is the limit of stress intensity factors "1" when the crack length is close to "0"?

Submitted by Zhanqi Cheng on

I have read some papers about fracture mechanics of functionally graded materials. I find there are different results for the stress intensity factors when the crack length is close to "0" . In some papers the values of stress intensity factors are "1" when the crack length is close to "0" , but in other papers the values of stress intensity factors are not "1". I obtain the stress intensity factors is "1" when the length of crack is close to "0". I hope to get the explaination about the results.Thanks a lot.

XFEM

Submitted by Uno Mutlu on
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Hello,

As far as I understand from the previous blogs: we can now embed XFEM in ABAQUS. Is this approach restricted to linear elastic behavior? Can we simulate fracture propagation in an elasto-plastic material ("XFEM coupled with ABAQUS" type analysis) or is this approach only limited to fracture propagation in elastic materials.

 Thanks,

 Uno.