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What we measure on shock waves and how we interpret the results

 

 

 

                What we measure on shock waves and how we interpret

                                               the results.

 

Viscoelastic material: Prony series in Abaqus

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Jean-Michel Pereira's picture

A symposium in memory of Pr. Olivier Coussy

Dear All,
I would like to announce a symposium in memory of Pr. Olivier Coussy

Mechanics and Physics of Porous Solids : a tribute to Pr. Olivier Coussy

It will be held at Ecole des Ponts ParisTech, France from 18 to 20 April 2011.

All informations can be found in the ongoing website http://navier.enpc.fr/events/mpps2011

 


Jean-Michel Pereira
on behalf of the organizing committee

Pressure on a new surface in ABAQUS

as I can put pressure on a new surface that is formed when time progresses, such as when a material is separated from the bottom of a pond full of water, first came under pressure at the top of it, but if separated as a sheet or as a chip, new areas would receive the same pressure, as additions ABAQUS

Lucas Maximo Alves's picture

Thermodynamics and Fracture Mechanics

Hello! Smile

Let's discuss here some subjects related to Fractal Fracture Mechanics and Fracture Thermodynamics,

 

1. Introduction

M.Hassan Mansouri's picture

Looking for Papers

Dear all

I am looking for some papers about hygrothermal effect in composite plates.

some of these are here:

1-   Lee SY, Yen WJ.
Hygrothermal effects on the stability of a cylindrical composite shell panel. Computers and
Structures, 1989, 33, 551-559.

2-   Librescu L, Stein M. A,
geometrically nonlinear theory of transversely isotropic laminated composite plates and its
use in the post-buckling analysis. Thin-Walled Structures, 1991, 11, 177-201.

composite slab

I am going to study the diaphragm behaviour of the composite slab under the lateral loading.

To simulate the system using FEM package (such as ANSYS or ABAQUS). the obtained results from FEM package would then be verified by experimental results that must be done by myself.

 

mrb3h's picture

Post-doctoral positions at UCSB in mechanics

The Materials Department and the Department of Mechanical Engineering at UCSB invites applications for post-doctoral fellowships in computational mechanics, with an emphasis on (1) micromechanics of layered systems and (2) high temperature composites. The position involves significant collaboration with a wide variety of colleagues working on many aspects of structural materials, including those in industry and other academic institutions. Preference will be given to applicants with a strong track record of publication.

Contact analysis in abaqus

I’m very much obliged to you if you would be so kinds help me.  I am trying to design washing machine. Initially I want to try doing a static analysis. For this, I have modeled cylinder (shell) and, placing them on the solid ribs. After this i have applied boundary condition to the assembly, and also a load (centrifugal). For only Tie connection between cylinder and rib, I got simulation but less strain at rib region.

Helmut Boehm's picture

Positions for doctoral students at TU Wien

A new doctoral college, Energy Systems 2030, is about to start at Vienna University of Technology (TU Wien), Vienna, Austria.

A one-page flyer is available at http://www.ilsb.tuwien.ac.at/gener/DC_ENSYS_e.pdf and the doctoal college's web page can be found at http://ensys2030.tuwien.ac.at/EN/.

Within ENSYS 2030 there are 10 openings for doctoral students. Applications can be filed from August 5, 2010.

Helmut Boehm's picture

Positions for doctoral students at TU Wien

A new doctoral college, Energy Systems 2030, is about to start at Vienna University of Technology (TU Wien), Vienna, Austria.

A one-page flyer is available at http://www.ilsb.tuwien.ac.at/gener/DC_ENSYS_e.pdf and the doctoal college's web page can be found at http://ensys2030.tuwien.ac.at/EN/.

Within ENSYS 2030 there are 10 openings for doctoral students. Applications can be filed from August 5, 2010.

Contact Formulation, Abaqus

Hi,

I am modelling installation (Jacking) of concrete pile (rigid body) in soil (Eulerian soil) which involves large deformations.

 For jacked pile contact friction is considered as zero.

Inorder to cope up with large deformation which occur during pile penetration process kinematic contact fomulation is used, this formulation is based of master-slave principle implemented in ABAQUS.

When I run the analysis i am encountering with following error:

Foundation on soil - ABAQUS

Hi there,

 Recently I have modelled a 2D block of soil, at the first step of analysis the soil block subjected to a gravitational load (Gravity) and gravitational stresses generated in the soil block, at the second step, a little rectangular part of soil block removed and currently a concrete block with same size of removed soil embedded on the soil block. this concrete block to be subjected a surface loading.

Amir Naeiji's picture

Beam Equation

How can we derive dynamic beam equation from navier equation in elastodynamic? I tried with the displacement vector field:

u=-z*w(x,t)

v=0

w=w(x.t)

and put it in navier equation, but it does not work.

Abaqus error: code 5

Hi all,
I am trying to run a VUMAT subroutine for isotropic hardeining, whenever I input the command "abaqus j=inp_name user=subroutine_name " the analysis begins, the ODB file is generated but in few secs the analysis exits with an error, and the error is..

Abaqus Error: The executable C:\ABAQUS\6.7-1\exec\explicit.exe
aborted with system error code 5.

It also says...

Bent F. Sørensen's picture

Professor in Materials Mechanics and Composite Materials

Risø National Laboratory for Sustainable Energy at the Technical University of Denmark, Risø DTU invites applications for a position as Professor with emphasis on research in Materials Mechanics and Composite Materials.

Read more here:
http://www.dtu.dk/English/About_DTU/vacancies.aspx?guid=3de7fe79-4392-4f...

modal damping ratio for viscoelastic material

Hi, I am wondering if anyone can give me suggestion on the following problem.

 I would like to do Frequency response study on a viscoelastic material. The frequency response computation usually takes a modal damping ratio. However the viscoelatic material is defined by K (elastic bulk modulus), G0 (short-time shear modulus), Gi (long-time shear modulus) and Beta (decay constant).

Is there a way to find  the modal damping ratio from the time domain viscoelastic material parameters (K, G0, Gi and Beta)? E.g. in a FEM environment?

 Thanks.

 

Pros and Cons of element deletion in Abaqus

Hi all ... i have been doing element deletion extensively in my analysis but was wondering ... wat are the Pros and Cons of using this method. To my knowledge was wondering how the deleted mass and energy are conserved through out the analysis. Thank you all.

3-D and 2-D Crack Growth Simulation

Hi,

     Is it possible to use 2-D finite elements capable of accurately predicting all stresses (three dimensional stress state) for 3-D crack growth simulation?

 

Subramanian

SIF for 3D crack in ANSYS

Dear all

I am searching for procedure to calculate stress intensity factor of bonded repair of cracked plate, so any one has any idea how to calculate stress intensity factor in 3D crack model By ANSYS, please guide me. I need your help.

Looking for your help.

Please share your valuable documents at:-

himanshu@iitp.ac.in

hpiitp@gmail.com

Joining A Damage Mechanics Research Group

Hi every one
I' m a PhD student from Iran and I like joining a Damage Mechanics Research Group for my thesis. Does any body have a good opprtunity for me?
Regards

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