Blog posts

SN curve(s) of an anisotropic material

Submitted by Atul Jain on Mon, 07/12/2010 - 08:11

opinion

HI,

looking for a postdoctoral position in computational mechanics and relevant material processing

Submitted by hale on Mon, 07/12/2010 - 02:34

job

computational mechanics

Plasticity

Material

metal forming

Zanaboni Theorem Is Invalid：Re-review

Submitted by Jian-zhong Zhao on Sun, 07/11/2010 - 02:25

Saint-Venant’s Principle in elasticity has its over 100 year’s history. Boussinesq and Love announced general statements of Saint-Venant’s Principe. The early authors made important contribution to the principle. Zanaboni “proved” a theorem ，trying to concern Saint-Venant’s Principle, but in the present paper we will prove that Zanaboni’s theorem is false.

Sequence loads

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

research

fracture mechanics

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: