Blog posts

Sequence loads

Submitted by uni_students2009 on Sat, 07/10/2010 - 08:51

Hi everybody

I want to ask you regarding the general pattern of diagram da/dn Vs. DeltaK(stress intensity factor) for Variable amplitude loading? Could we share our knowleadge in this case?

Regards,

thermo-mechanical coupling analysis of brake disc

Submitted by Tayo on Sat, 07/10/2010 - 05:27

research

Pls i am new to Ansys just learning how to use it for my research project on composite brake disc. pls can someone help with the following;

1. procedure for thermo-mechanical analysis

2. setting boundary conditions

3. meshing application

i will be very glad if i can get this informations it will really go along way in assisting me for my reseach work. debisi1 [at] yahoo.com (debisi1[at]yahoo[dot]com)

thank youvery much

Lie Derivative, Deformation Rate, Velocity Gradient

Submitted by John Craighead on Fri, 07/09/2010 - 20:08

I'm trying to understand elastic deformation using the Lie derivative. I've read a good summary on Wiki but want other sources to review. Can anyone offer any sources &/or explanations. I need something fairly basic. Thanks, John.

Matrix

Submitted by Anonymous (not verified) on Fri, 07/09/2010 - 20:03

education

matrix

If I have the matrix A=[1 2 3;4 5 6;7 8 9] and the matrix B={1;2;3}

of course A*B is C={14;32;50}.

My question how can I get the matrix A if I have B and C ?

thank in advance

Simulating Hole punching operation using MSC Marc

Submitted by kruzster on Fri, 07/09/2010 - 16:31

Does anyone who has previously worked on MSC Marc worked with the concept of element activation and deactivation...?

I need to do a simulation wherein a hole is required to be punched in an alloy steel bar.

The issue is that I am not sure as to how to go about this.

If there is anyone who can guide me through this ..I would appreciate it..!!

Regards,

Krunal.

Question on Abaqus Mohr-Coulomb hardening definition

Submitted by chenglejin on Fri, 07/09/2010 - 07:50

software

Abaqus Mohr-Coulomb hardening

Hi Expert,

I'm a newer of Abaqus. I was trying to compute a simple compression problem using Mohr-Coulomb model. I found the slope of stress-strain curve from the results is double of that defined in the input file. I don't know what's cause it or my understand of the slope is wrong.

Only one 8 node C3D8 element is involved. To simplify the question, let the friction angle be 0, it reduces to a Tresca model actually. The material is defined as:

Rayleigh damping: how to match the model frequences to the frequences of the measurements?

Submitted by Mike W. Long on Thu, 07/08/2010 - 18:09

damping mechanical elastic body measurements modal analysis

I hope that the mecanicians can help me to solve my problem.

Is there any possibility to match the frequences of the physical model to the mesurement data?

Continuity of traction vector

Submitted by Nachiket Gokhale on Thu, 07/08/2010 - 17:25

I am looking for a source which has a good explanation of the pill box argument to prove continuity of the traction vector. If you know of such a source (url, book etc) please let me know.

Thanks,

-Nachiket

Curriculum Vitae

Submitted by Tao Jiang on Thu, 07/08/2010 - 16:10

Curriculum Vitae

Tao Jiang

Postdoctoral position in mechanical and material engineering

Submitted by gayoub on Thu, 07/08/2010 - 11:17

My name is Georges Ayoub; I am looking for a postdoctoral research position in mechanical and material engineering in the field of the polymer science, polymer behaviour and fatigue.

I am presently preparing my last year of PHD at Lille1 university (north France) and ill defence my thesis in September 2010. I am very motivated to start a Postdoctoral position, at the end of my thesis, in a Anglo-Saxon country.

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