User login

You are here

mechanician

Carbon-epoxy composite plates with edge crack modeling by FRANC 2D/L

Hi, All

 Can someone help me for modeling composite plate contaning edge crack by FRANC 2D?

thank you

Hamed 

Abaqus Standard /General contact with penetration

Dear Colleague, 

 

I am running Abaqus Examle Problems Manual 1.1.18 - The self contact on rubber gasket.  

 

I tried to convert the self contact and surface contact definition to a general contact definition. However, the rigid surface just penatrate the model like this shown below.

 

Left image is the result for the inp from manual. The right one is the result for compuation with general contact.

 

Does somebody here want to discuss or maybe explain this for me ?

 

Thank you in advance. 

 

Abaqus "system error code 884"

Choose a channel featured in the header of iMechanica: 

Hello again

 

Im running a simulation on Abaqus and i got the next text message:

 

Abaqus Error: The executable C:\SIMULIA\Abaqus\6.11-PR3\exec\standard.exe 

aborted with system error code 884. 

Please check the .dat, .msg, and .sta files for error messages if the files 

exist.  If there are no error messages and you cannot resolve the problem, 

please run the command "abaqus job=support information=support" to report and 

save your system information

 

Pradeep Sharma's picture

Call for Nominations for the Eshelby Mechanics Award for Young Faculty

It is my pleasure to solicit nominations for the "Eshelby Mechanics Award for Young Faculty". This award, launched last year, is given annually to rapidly emerging junior faculty who exemplify the creative use and development of mechanics. The intent of the award is to promote the field of mechanics, especially among young researchers. While interdisciplinary work that bridges mechanics with physics, chemistry, biology and other disciplines is encouraged, the ideal awardee will demonstrate clear inspiration from mechanics in his/her research.

hello , in NGUYEN V 's 'An Object-Oriented approach to the Extended Finite Element Method with Applications to Fracture Mechanic

hello , in paper :An object-Oriented approach to the xfem with Appications to fracture mechanics, in page172, the matlab code :mshmlab.m.

when i run the code mshmlab.m , this problem occured:

 ???Maxmium recursion limit of 500 reached, when i set(0,'recursionlimit',N).N=5000. the matlab crashed,

how to address this issue? 

ERC Advanced Grant 2013 to Professor Davide Bigoni

Join us to congratulate Professor Davide
Bigoni, who has just been awarded with the ERC Advanced Grant
Proposal 340561 - Instabilities and nonlocal multiscale modelling of
materials, years 2014-2018, 2.4 M.

Congratulations Davide!

 

 

More on Davide's research:

www.ing.unitn.it/~bigoni/

http://ssmg.unitn.it/

Abaqus

Change of basis for deviatoric second order tensors

Dear mechanicians
 
I remember reading somewhere that someone had a proof of the following:
Given a deviatoric/traceless second order tensor it is possible to find a basis for which all the normal/direct components equal zero.
For 2d this is easy: a basis rotated 45deg wrt. the eigenbasis.
The proof concerned 3d and it may have been Gurtin that had it in one of his books (sometihng tells me "The Linear Theory of Elasticity" (1972) as I don't have access to this one), but I'm not certain.
 
Can anyone help me in this matter?

Thermomechanical coupled simulation

Hi all,

 

I am trying to input a termperature field as initial conditions in
abaqus, to use the temperature distribution from a previous temperature
simulation in an mechanical simulation. But when I check the Temperature
values in the mechanical simulation i get great differences between the
nodal values (NT) and the element values (TEMP).

Does anybody know the reason of this problem?

 

Can it be related to the element typ? So the TEMP values are the avereged values from NT?

 

Kind regards!

Thermomechanical coupled simulation

Hi all,

 

I am trying to input a termperature field as initial conditions in
abaqus, to use the temperature distribution from a previous temperature
simulation in an mechanical simulation. But when I check the Temperature
values in the mechanical simulation i get great differences between the
nodal values (NT) and the element values (TEMP).

Does anybody know the reason of this problem?

 

Can it be related to the element typ? So the TEMP values are the avereged values from NT?

 

Kind regards!

Thermomechanical Simulation

Hi all,

 

I am trying to input a termperature field as initial conditions in abaqus, to use the temperature distribution from a previous temperature simulation in an mechanical simulation. But when I check the Temperature values in the mechanical simulation i get great differences between the nodal values (NT) and the element values (TEMP).

Does anybody know the reason of this problem?

 

Can it be related to the element typ? So the TEMP values are the avereged values from NT?

 

Kind regards!

Stephen Juhasz died on 19 June 2013 at the age of 99.

Stephen Juhasz died on 19 June 2013 at the age of 99. The following brief description of Juhasz's career was provided by Norm Abramson.

Juhasz received his Dip. Ing. From Budapest Technical University in 1936; Teknologie Licensiate (doctorate) from the Royal Institute of Technology, Stockholm, Sweden in 1951; and an Honorary Doctorate of engineering from Budapest Technical University in 1989.

Hanqing Jiang's picture

Professor Yonggang Huang receives 2013 ASME Daniel C. Drucker Medal

Congradulations to Professor Yonggang Huang to receive 2013 ASME Daniel C. Drucker Medal for his "fundamental and applied contributions to mechanics of materials and structures across multiple scales." The Daniel C. Drucker medal was established in 1997 and is conferred in recognition of distinguished contributions to the field of applied mechanics and mechanical engineering through research, teaching and service to the community over a substantial period of time. 

Here is a list of DANIEL C. DRUCKER MEDALISTS

Frederick A. Leckie died at age of 84

We are deeply sorry to report that Fred Leckie died on Friday, 14 June 2013, at the age of 84.  A brief description of Fred's career is contained in the 2000 ASME Materials Division Newsletter, when Fred received the Nadai Medal.

Mike Ciavarella's picture

sad news for mechanician. Departure of HD Bui, member of french academy of science

Unfortunately, HD Bui, 76, passed away yesterday evening. An elegant, dedicated, very discreet but bright mind, HD Bui made a long career at Ecole Polytechnique and EDF, making important contributions in fracture mechanics and inverse engineering.  Lately, he returned to work on his interesting contributions on the Cheops pyramid and the spiralling internal structure.

He was considered the most prominent vietnamese scientist in France, of 400 000 living there.

retrodynamic's picture

Novel Rotary-Turbo-InFlow Tech - Gearturbine Project - Featured Development - Atypical Type

-Atypical - Gearturbine = Retrodynamic Dextrogiro VS Levogiro Effect - Ying Yang Thrust Way Type - Non Waste Looses. State of the Art, Innovative concept Top System, Higher Efficient Percent.

 

-Its Similar simple system, of the Heron`s Aeolipile Steam Turbine Device, from Alexandria; 10-70 AD.

 

-8/XY Thermodynamic Cycle way Steps.

 

-New Form-Function Motor Engine Device Type. 

 

-Retrodynamic = Rotor/RPM VS InFlow Way = Collision interaction type.

 

retrodynamic's picture

Novel Rotary-Turbo-InFlow Tech - Gearturbine Project - Featured Development

Choose a channel featured in the header of iMechanica: 

 

Atypical Gearturbine - Retrodynamic Dextrogiro vs Levogiro Effect - Ying Yang Thrust Way - Non waste Looses. State of the art innovative concept top system higher efficient percent.

Its similar system, of the Aeolipile device, 10-70 AD.

8-XY ThermodynamicCycle way steps.

New Form-Function Motor Engine Device Type.

Rotor RPM vs InFlow way / Collision interaction type.

Non parasitic looses for; cooling, lubrication, combustion, systems.

Need help about VDLOAD (Umat file) for abaqus

Hello all

I have a problem with my VDLOAD file for abaqus.

My vdload.for file is:

Dibakar Datta's picture

Professor Rod Clifton to Receive Sigma Xi Monie A. Ferst Award

Rod Clifton , Rush C. Hawkins University Professor Emeritus and Professor (Research) at the School of Engineering at Brown University, has been selected as the winner of the 2013 Sigma Xi Monie A. Ferst Award .

MSC.MARC (HYPELA2)

Choose a channel featured in the header of iMechanica: 

Dear Marc specialist users Colleague:

I am developing an user material subroutine (HYPELA2) in Msc Marc (Marc Mentat2012.1.0, Windows platform, 64bit).
I am trying to make a write inside in Hypela2.f routine, but it doesn't work.
I have used the file number unit 6, for example,  write(6,*) ' Hello' , but
no any results in the standard output file. Otherwise, the Hypela2 works properly.
Does anyone have any suggestions how can I write out any data from Hypela2.f?
Thanks.

Leslie

Pages

Subscribe to RSS - mechanician

Recent comments

More comments

Syndicate

Subscribe to Syndicate