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Strain Rate Calculation in CEL

Submitted by sujan on

Hi!

I am trying to calculate the strain rate in Coupled Eulerian Analysis Using ABAQUS. I want to Calculate it through Plastic strain as strain rate in vuhard is not working properly. I want to fix the strain in state variable for a time period but with analysis, it is updated automatically. Is there any options to keep strain fixed for a time period?

 Any idea will be highly appreciated.

Thanks in advance.

Sujan

EXTENDED ABSTRACT SUBMISSION: Nanobrücken II: A Nanomechanical Testing Workshop, March 22-23, 2012, INM Saarbrücken, Germany

Submitted by Oden Warren on

Dear Colleague:



You are cordially invited to attend Nanobrücken II:  A Nanomechanical Testing Workshop, jointly presented by INM - Leibniz Institute for New Materials and Hysitron, Inc., with co-sponsorship from the JEOL company. This is the second workshop in the Nanobrücken series. The workshop's scope has been broadened, and the abstract submission deadline is now February 19, 2012.



Stress Softening in UMAT

Submitted by NazBaba on
Hi all,

I am implementing the constitutive behaviour of CuAlNi shape memory alloy during uniaxial loading using UMAT. My question is that:

Stress decreases during phase transformation in our model but I can't do this in UMAT. When stress is needed to decrease, abaqus job stops and there is no change in the command window. I wonder that is there anything which I can do when stress starts to decrease in UMAT? It can be in input file or subroutine file.

Thank you.
Nazım Babacan

LINKING FORTRAN AND C++ WITH ABAQUS

Submitted by Kianoosh.Marandi on

 

Dear all

I realized so many users have problems in
linking Fortran and C++ to  ABAQUS to run user-subroutine codes such as
VUMAT and UMAT. I managed to collect all information (some taken from imechnica) which
is necessary to establish a  proper link. These are my recommended steps :

1-Install ABAQUS

2-Install Microsoft Visual STUDIO (trial
version is good enough!) and install Intel Visual Fortran Compiler if it is not included in the Visual Studio package.

 

 

shell and solid modelling

Submitted by iman_hsni on

hi 

i modeled a beam to column connection.

when i modeled this connection with solid,the analyses completed wethout error but it doesnt give the ur. when modeled with shell,show this message:too many attempt...

sometimes with larger mesh or decreas of load, the analyses are completed.but when i retry,thr analys is aborted and this message  is shown. 

there are these questions in my mind:

-if i model the connection whit solid,can i take the rotation(ur)?how?

- how can i run this shell model without error?

Free Surface Domain Nucleation in a Ferroelectric under an Electrically Charged Tip

Submitted by Kaushik Dayal on

This is the preprint of an article that will appear in the Journal of Applied Physics, 111:014106, 2012. (doi:10.1063/1.3674320).

Free Surface Domain Nucleation in a Ferroelectric under an Electrically Charged Tip

by Lun Yang and Kaushik Dayal, Carnegie Mellon University

 

Abstract

abaqus - connector or constraints

Submitted by matejh on

Hi,

 I am relatively new in abaqus environment and i have a question about relatively easy topic. But i would like to ask kindly for your assistance.

I a working on a model - regarding bending of tubes. I would like to connect or constraint 4 elements (rigid or deformable it doesnt matter - placed in one plane, equaly spaced in one plane, around the tube's lonitudial axis),

to a single Ref. point positioned in the center axis of the tube. I want to do that in oredr to achieve behaviour of this 4 elements composition, as one. Therefore. by adding load to

西安交通大学 国际应用力学中心(ICAM)全球诚聘tenure-track PI及博士后

Submitted by Zhigang Suo on

(本招聘广告有效期至2012年12月31日)PDF of this file

为了更好地聚集海外优秀人才、培养国际一流的青年学者、及借此加快建设世界高水平大学的进程,西安交通大学建立了一个新型的、采用美国先进的用人和科研体制管理的研究中心---“国际应用力学中心” International Center for Applied Mechanics (ICAM)。该中心的目标是聚集和培养一流人才,产出一流学术成果,打造国际一流的力学学科。ICAM以独立的tenure-track PI为本,将重点研究国际力学前沿问题及国家重大需求中的关键力学问题,承担国家级的重点和重大项目,并开展高层次国际合作与交流。

Ph.D. Positions in Computational Solid Mechanics

Submitted by A.Tabarraei on

Fully funded Ph.D. positions are available in the Department
of Mechanical Engineering & Engineering Science at the University of North
Carolina at Charlotte. The research focus will be on developing and using multiscale methods for modeling nanocomposites and nanomaterials. Candidates should have a BS or MS degree in
mechanical engineering, material science, civil engineering or other related
areas. Computational experience at the continuum or molecular level is
preferred but is not necessary.  Interested
candidates please send a CV to atabarra [at] uncc.edu (atabarra[at]uncc[dot]edu)