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Soud Choudhury's picture

Abaqus is not reporting any CEEQ in coupled temp-displacement step

Hi all,

I am modeling a simple coupled temp-displecment analysis with the following step information:

** MATERIALS

** 

*Material, name=Material-1

*Conductivity

 1e-06,

*Creep, law=HYPERB

44000., 0.005,   4.2, 45000., 8.314

*Elastic

60000., 0.34

*Expansion, zero=25.

 1.4e-05,

*Plastic

20.,  0.

60., 0.1

** 

** PHYSICAL CONSTANTS

** 

*Physical Constants, absolute zero=-273., universal gas=8.314

** STEP: Step-1

** 

Postdoc Position - University of Pittsburgh

POSTDOCTORAL ASSOCIATE POSITION University of Pittsburgh The Shankar Research Group (www.shankarlab.pitt.edu) at the University of Pittsburgh anticipates an opening for a postdoctoral associate starting tentatively in September 2014. The position’s primary area of research will focus on mechanical instabilities and actuation in structures fabricated from photoresponsive, azobenzene-functionalized liquid crystal polymers and polyimides. A background in experimental mechanics and mechanical characterization is required.

Joost Vlassak's picture

Tenure-track Faculty Position in Materials Science and Engineering

HARVARD SCHOOL OF ENGINEERING AND APPLIED SCIENCES

Tenure-track Faculty Position in Materials Science and Engineering

How to use abaqus input files from abaqus example problems guide

I am new to abaqus and am going through this tutorial on "Damage and failure of a laminated composite plate".  I find lot of input files at the bottom of this example. I tried "importing" them by going to file->import but I find that there is no geometry or mesh associated with it. Does one create the geometry oneself? How do we use the sample ".inp" and ".f" files to learn about abaqus sample problems.

Deformations

What design considerations should i take to lessen my deformation in the assembly.

And what changes can i implement to reduse the deformations like (Should i use some holes etc.)

Thanks in advance.

Mario Juha's picture

Symmetric global partition polynomials for reproducing kernel elements

The reproducing kernel element method is a numerical technique that combines finite element and meshless methods to construct shape functions of arbitrary order and continuity, yet retains the Kronecker-δ property. Central to constructing these shape functions is the construction of global partition polynomials on an element. This paper shows that asymmetric interpolations may arise due to such things as changes in the local to global node numbering and that may adversely affect the interpolation capability of the method.

Wenbin Yu's picture

cdmHUB: Publish and Run Composites Simulation Tools In the Cloud

We recently launched the Composites Design and Manufacturing HUB (cdmHUB.org), a community-driven, collaborative platform that has the unique capability to let users to freely publish and run simulation codes in the cloud in addition to all the social network functionalities (blogging, questions/answers, groups, etc.).

Medtronic Job Opportunity - Sr Numerical Modeling Engineer

The posting was temporarily offline yesterday. It’s been re-posted since.  The new link is attached below as the old one does not work anymore.  Also attached is the description of the position. Thanks again for your interest and help!!

Requisition ID:  94254

martin.levesque's picture

Post-doctoral position at McGill/Polytechnique Montreal on crystal plasticity

I have a 2-year post-doctoral position available at McGill/Polytechnique to work on the effect of shot peening on the residual stresses at the grain levels. The methodology will consist of meshing representative volume elements of polycristals and submitt them to shot peening (explicit dynamic simulations). I require a candidate who has exprience in FE modeling of Representative Volume Elements of polycristals and crystal plasticity. 

Davide Bigoni's picture

Elastica arm scale

Can configurational forces be exploited to design a new type of scale?

See the explanation and an example of use at http://www.ing.unitn.it/~bigoni/elasticscale.html

If you're having trouble playing videos on YouTube, click here to watch it.

 

wvmars's picture

Engineering Analyst position with focus on FEA, elastomers, and fatigue life prediction

Endurica, LLC is a growing software and consulting services company headquartered in Findlay, Ohio, USA. The
company develops and sells solutions that enable customers to manage durability of elastomeric products. Our
physics-based solutions include computer-aided engineering software that numerically simulates the fatigue life
of elastomeric products, a materials characterization service, and project-oriented consulting services. Our
software is distributed globally in partnership with Dassault Systemes.

giacusatis's picture

PhD position available in computational mechanics of concrete and reinforced concrete

"The SEGIM center at Northwestern University  (http://segim.northwestern.edu/) has an immediate opening for a PhD student in the area of Computational Mechanics of Concrete and Reinforced Concrete and related to a newly awarded NSF project ( see http://www.nsf.gov/awardsearch/showAward?AWD_ID=1435923&HistoricalAwards... ).

giacusatis's picture

PhD position available in computational mechanics of concrete and reinforced concrete

"The SEGIM center at Northwestern University  (http://segim.northwestern.edu/) has an immediate opening for a PhD student in the area of Computational Mechanics of Concrete and Reinforced Concrete and related to a newly awarded NSF project ( see http://www.nsf.gov/awardsearch/showAward?AWD_ID=1435923&HistoricalAwards... ).

von-mises stresses in solid model with and without pores

Hello Everyone,

My name is Muhammad Imran and I am a PhD student in TU, Dortmund. I am performing tensile test simulation in Abaqus for aluminium silicon alloy. I am calculating stresses for three different models, one model is solid (zero porosity) and second model has a cavity inside and third model has some pores inside.

ill condition tangent stiffness matrix

hello Dear friends

I study large displacement analysis of euler-bernoulli beam. the beam is under pure bending moment.

wtangent stiffness matrix is dependent to tanget of rotation. so when rotation of nodes approches 90 this matrix become ill condition. I use of matlab for coding. I was wondering if some one give me a solution.

best wishes.

Fabrice Pierron's picture

5 years post-doctoral fellowship available, University of Southampton

I am looking for a post-doctoral research fellow with a high academic profile to join me on the PhotDyn project. The topic concerns the development of novel high strain rate testing procedures based on ultra-high speed deformation imaging and inverse identification. I am mainly looking for someone with expertise in constitutive modelling of materials. The detailed job description can be consulted here.

Research Assistant Position with a possibility for obtaining a PhD @ Loughborough University, UK

Research Assistant in Material Modelling ( 2 years)

Project goal: Develop physics-based numerical tools capable of characterising material behaviours in nickel and titanium alloys, linking micro and macro length scales. The models developed will be relevant for a broad temperature range, high deformations (up to failure) and high strain rates.

The Research Assistant will work as part of a multidisciplinary team consisting of partners from the UK (Univ. of Oxford) and India (IIT Delhi, IIT Guwahati, IISc Bangalore), as well as with the industrial partners. 

atefe.geramian's picture

WindowsSdkDir not found

Dear all,

I was using Intel Visual Fortan Compliler 11.1 with Visual Studio 2008 pro and Abaqus 6.12 to write and use subroutines in Abaqus. I had linked it properly and it was working fine before. However, today when I tried to use it, the Intel Visual Fortran compiler command window comes with an additional message that "WindowsSdkDir not found", and my subroutines are not working anymore. and when I run it, I get following erorr

jenda_z's picture

The call was closed

stress at a point other than integration points in VUMAT/UMAT

Hi all,

The question is how can the stress at a point other than integration points be evaluated in VUMAT/UMAT. Interpolation may be a general method. However, to me, it seems not so easy to be implemented, for I have no idea of the way to retrieve the necessary information of all integration points (their indexes, positions etc.) belongint to a identical FE. Any help would be appreciated.

Fred Sansoz's picture

Two Ph.D. Positions in Computational Nanomechanics at the University of Vermont

Positions for two doctoral students in mechanical engineering are available immediately in the Sansoz Research Group at the University of Vermont located in Burlington, Vermont (USA).

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