Blog posts

If common block can be used in UMAT for parallel computing

Submitted by Wang Guofeng on Thu, 10/23/2008 - 08:15

Hello everyone

I wrote some codes with umat recently . They can work well with single CPU. However, the results become very bad for several CPUs.

I define a matrix with COMMON BLOCK and it seems that COMMON BLOCK can not be used for parallel computing. Are there any ways to resolve this problem?

I am not familiar with fortran.Someone told me that the matrix should be defined by MODULE. I don't know about this.

Please give some helps to me

regards,

Wang

Recommendation of Textbooks

Submitted by Zhiyan Wei on Wed, 10/22/2008 - 21:48

Partial Differential Equations in Mechanics: The Biharmonic Equation, Poisson's Equation

A. P. S. Selvadurai

Springer, 2000

ISBN 3540672842, 9783540672845

698 p

There is a free copy of part of this book online. One can serch it.

Analaytical Model

Submitted by psubbu2000 on Wed, 10/22/2008 - 16:03

Hi all,

If an analytical model predicts accurately all stresses, including transverse normal stress across thickness, using constitutive law for the analysis of laminated composite structures, what is the use of this model and where can I apply this model in composite structures and fracture mechanics?. Further this model is amenable to linear/nonlinear finite elements with less degrees of freedom per node (C0 and C1 finite elements are possible).

Bye

Subramanian

How to get information of boundary conditions when writing UEL in ABAQUS

Submitted by An Danh Nguyen on Wed, 10/22/2008 - 15:35

Hi all,

I need to get information of boundary conditions for prescribed nodes when writing UEL in ABAQUS. Could anyone tell me how to do that?

Thank you very much in advance.

Cheers

Danh.

Mechanics of Materials by F.P. Beer, E.R. Russell Johnston Jr. and J.T. DeWolf

Submitted by Pawel Zimoch on Wed, 10/22/2008 - 14:51

Mechanics of Materials is the book I used for my undergraduate course in strength of materials and it helped me understand the basics, and hence my selection.

The outline is as follows:

Ch. 1: Introduction - concepts of stress

Ch. 2: Stress and strain - axial loading

Ch. 3: Torsion

Ch. 4: Pure bending

Ch. 5: Analysis and design of beams for bending

Ch. 6: Shearing stresses in beams and thin-walled members

Ch. 7: Transformations of stress and strain

Solids Textbooks

Submitted by John M. Kolinski on Wed, 10/22/2008 - 14:29

The texts from Timoshenko and Landau and Lifschitz are classics. I think learning the physical approach of L&L is particularly valuable. The following sections are available in L&L:

1. Fundamental Equations

2. Equilibrium of Rods and Plates

3. Elastic Waves

4. Thermal Conduction and Viscosity in Solids

Look for insightful physical explanations, and expect to read with a pen and paper at your side, to understand exactly the brilliance behind each statement made.

Convergence problem about progressive failure analysis of anisotropic composite laminates

Submitted by pfliu@zju.edu.cn on Wed, 10/22/2008 - 14:15

research

test

Submitted by johnhopone on Wed, 10/22/2008 - 13:59

research

test

hi, anyone can help me on application of Boundary condition in 3D Fem

Submitted by sameer2008 on Wed, 10/22/2008 - 11:17

hi i am solving 3D heat diffusion equation could you tell me the process of boundary condition application in the main problem. i want to use mixed boundary condition that is robin boundary condition. how the boundary condition will effect the system stiffness and the mass matrix? or plz tell me some good books' name from where i can get some idea.

plz plz plz

Faculty Positions in Aeronautics and Astronautics at Purdue University

Submitted by Wayne Chen on Wed, 10/22/2008 - 03:42

job

Two faculty positions at Assistant/Associate Professor lavels are open in the School of Aeronautics and Astronautics at Purdue University, West Lafayette, IN (https://engineering.purdue.edu/AAE). The positions are open to all specialties complementary to current AAE research areas.

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