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impact damage due to laminar construction??

Hi everyone,


According to a book chapter written by NL Hancox, 'Laminar construction of composites which is required if the reinforcing fibres are to be used efficiently and anisotropy reduced, can be a reason why composite laminates are vulnerable to impact damage.'

Now I have three questions;

1-What is meant here by the specified 'laminar construction to reduce anisotropy'?Does it mean to use different orientation for fibres in each ply to have an isotropic material at the laminate level?

Coupled thermo-structural analysis of CFRP using ANSYS

Hi everyone,

 does anyone know publications dealing with the coupled thermo-structural analysis (direct method) of CFRP using ANSYS?

Two postdocs at U. Pittsburgh

Two post-doctoral positions are available in the lab of Sachin Velankar in the Dept. of Chemical Engineering at the University of Pittsburgh to conduct experimental research on the biomechanics of surface texturing in cephalopods (octopus or cuttlefish), and to devise reversibly-morphing surfaces.  These animals are famous for their camouflage abilities.  Like many other animals, cephalopods can change their color, but in addition, they can also change the texture of their skin by expressing protuberances or wrinkles.

Gouse's picture

Unit cell modeling using Abaqus submodeling


I was going though papers related to micromechanical modeling of composites using unit cell approach. Usually in this procedure, a unit cell is isolated from the material and to ensure the compatabilty of the unit cell boundary, periodic boundary conditions are applied.

To ensure the compatabilty of the boundary and to apply loads, can we use submodeling techniques available in ABAQUS.

Thank you



mesh dependence of continuum damage mechanics approach

Hello Everyone,

I am a beginner in FEA of composites under impact in commercial explicit code Pam Crash.I want to know why the behaviour of composite plies with CDM approach show mesh dependency?Or a more general question for me is that what makes the FE simulation of a material with strain softening behavior mesh dependence(If this conclusion is right)? Does it make any difference with regard to mesh dependency if one uses implicit codes??




Reliability and engineering mechanics

The word "failure" can mean different things to different people.  Over the past couple of years, my interactions with various groups from industry has shown me that for some people failure means catastropic fracture/buckling while for others it can mean highly localized plastic yielding.  Even for relatively simple sandwich composite structures, there is no clearly agreed upon definition of the word.

jansen's picture

ECCOMAS Thematic Conference on the Mechanical Response of Composites - Abstract Deadline 17 December

The conference provides an efficient platform for experts on composites analysis. We are very pleased that the 2011 Public Forum of the EU Project MAAXIMUS (More Affordable Aircraft through eXtended, Integrated and Mature nUmerical Sizing, will be part of our ECCOMAS Thematic Conference. 

John R. Willis's picture

Lecture Notes on Composites

In addition to the notes on stability that I've already posted, I have a set on Composites, which also originated from a lecture course that I gave in Ecole Polytechnique, around 2002. In the hope that they may be of interest at least to someone, here they are! Please do remember that they are just notes and may not be error-free.

jansen's picture

3rd ECCOMAS Thematic Conference on the Mechanical Response of Composites 2011 - Abstract Deadline Approaching

The Institute of Structural Analysis (ISD) of Leibniz Universität Hannover organizes the ECCOMAS Thematic Conference on the Mechanical Response of Composites, from 21st - 23rd September 2011, in cooperation with the Graduate School on Multiscale Methods for Interface Coupling (MUSIC) of Leibniz Universität Hannover, the German Aerospace Center (DLR), and REpower Systems AG. 

Opening for Research Fellow Position in Composite Structures

Nov.5, 2010


Openingfor Research Fellow Position in Composite Structures

The Research Center for Aircraft Parts Technology in Gyeongsang National University (Jinju, South Korea) has opened a postdoctoral research fellow position for the research on composite structures.


6th International Conference on Fracture of Polymers, Composites and Adhesives - Final call for papers

Final call for papers - deadline 5 November 2010

There are only a few days left to submit your papers, if you haven't already done so. All you have to do is go to

We are inviting authors to submit 300 words abstract for oral and poster presentation at the conference. New developments and innovative applications are especially welcome in the following subject areas:

Twebb83's picture

Call for Papers on Abaqus FEA for 2011 SIMULIA Customer Conference

The 2011 SIMULIA Customer Conference (SCC) will be held May 16-19, 2011 in beautiful Barcelona, Spain. A city filled with world famous museums, historical sites, shopping, entertainment, and culinary delights.

We are pleased to invite you to join your colleagues and share your Abaqus FEA experience by submitting an abstract by November 8, 2010.

Abstracts are also being accepted for papers detailing the use of Isight for simulation process automation and design optimization.

jansen's picture

PhD candidate position in structural dynamics

The Institute of Structural Analysis at Leibniz Universität Hannover invites applications for a


PhD candidate position

(Salary scale TV-L E13)  


The position will be available from 1 November 2010 and should lead to a PhD thesis.


Research Project

International Conference on Mechanical, Automotive and Aerospace Engineering, ICMAAE11

The Faculty of Engineering, International Islamic University Malaysia is organizing this International Conference to bring together researchers and engineering professionals from all over the globe to meet and deliberate in the beautiful green city of Kuala Lumpur.

6th International Conference on Fracture, Composites and Adhesives 11-15 September 2011

This will be the 6th International Conference in the series organised by the European Structural Integrity Society - Technical Committee 4 on Fracture Mechanics related to Polymers, Polymeric Composites and Adhesives. We are again inviting papers in the areas reflecting the current and future interests of TC4 as listed below.

Both experimental and analytical work is sought in order to give a balanced view of the subject areas:


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