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saberelarem's picture

A new parallel sparse direct solver: numerical experiments in large-scale structural mechanics parallel computing


 The main purpose of this work is to present a new parallel direct solver: Dissection solver. It is based on LU
factorization of the sparse matrix of the linear system and allows to
detect automatically and handle properly the zero-energy modes, which
are important when dealing with DDM. A performance evaluation and
comparisons with other direct solvers (MUMPS, DSCPACK) are also given
for both sequential and parallel computations. Results of numerical
experiments with a two-level parallelization of large-scale structural
analysis problems are also presented: FETI is used for the global
problem parallelization and Dissection for the local


Literature on CZM and it's implementation through FEM

Can anyone suggest some basic literature on Cohesive Zone Modeling and it's implementation through FEM? Most of the literature, I find, is on traction-separation behaviour and some simulation using a FEM package. I 'm interested to learn it's mathematical formulation and implementation through FEM. Can anyone help me?

Praveen.


R. Hasanpour's picture

tunnel figure

tunnel figure
Chris He's picture

Looking for a full-time Ph.D researcher in Europe

Dear all,

I am from China, a Ph.D. candidate

My research field is solid mechanics and dynamics.

My expertise in solid mechanics and dynamics are as follow:

(1) computational solid mechanics (ANSYS、workbench).

(2) dynamics、vibrational and noise in complex mechanical systems (Adams、sysnoise).

(3) Fluid mechanical systems (CFX、Flotran).


help me in FSI

hello eveyone

I am a BE student,I am doing my final semester project on fsi of box beam

I am new in fluid structure interaction, I dont how much RAM it will require for fsi analysis of box beam.

any kind of tutorial on fsi are also be helpful. no helpful material is found on google

 

thanks


Jianliang Xiao's picture

SES 2011, Minisymposium on Mechanics of Adhesion

Adhesion has long been an important issue for mechanics and many other disciplines. Its influence spans macro-, micro-, nano- and molecular scales. When size goes down, adhesion plays a more and more significant role. Many important technologies attribute to adhesion, such as transfer printing for advanced microfabrication,  super adhesives inspired by gecko foot hairs, and self-assembly. Adhesion also has strong implications on the behavior of nanomaterials (such as nanotubes and graphenes) and biological system (such as cells). This minisymposium "Mechanics of Adhesion" is to provide a forum of discussion and communication, for researchers working on and interested in adhesion related subjects.


muhendismrt's picture

Positive definite stress-strain matrix in Ansys

Dear friends,

 I'm an MSc. student at Bogazici University, Turkiye and I'm working on a thesis project about the failure behaviour of fiber reinforced laminated composite plates under different loading types. The material which we use are AS4 fiber reinforced  prepregs and their mechanical properties are the following:

 


E11 =134,000 MPa


Chung-Yuen Hui's picture

Gordon conference on the Science of Adhesion

The GRC on Adhesion
Science will be held from July 24-29, 2011, at Bates College, Lewiston,
Maine, USA. TThe goal of this conference is to encourage communication
and discussion of ideas and new unpublished resutls at the very frontier
of adhesion science, by bringing together outstanding internation
scientists from academia, industry and government, while striving to
expand traditional adhesion science into new directions such as cell
adhesion, bio-inpsired adhesives and soft matter physics and
mechanics.   The GRC offer an exciting opportunity for young
investigators to get involved at the frontier of science.   Attendees
will not only be able to discuss the progress of unpublished research


Chris W Smith's picture

Chair in Low Carbon Aerospace Manufacturing

Chair in Low Carbon Manufacturing, University of Exeter.


The University of Exeter is seeking a full Professor in the field of Low Carbon Manufacturing.


The University is significantly expanding its capacity in Science and Engineering, with 275 million
GBP (approx 440M USD) capital spend on campus and 80M GBP (130M USD) on new academic staff.


Chris W Smith's picture

Chair in Engineering Materials

Chair in Engineering Materials, University of Exeter.


The University of Exeter is seeking a full Professor in the field of Engineering Materials.


The University is significantly expanding its capacity in Science and Engineering, with 275 million
GBP (approx 440M USD) capital spend on campus and 80M GBP (130M USD) on new academic staff.


Chris W Smith's picture

Chair in Structural Dynamics

Chair in Aerospace Structural Dynamics, University of Exeter

The University of Exeter is seeking a full Professor in the field of Aerospace Structural Dynamics.

The University is significantly expanding its capacity in Science and Engineering, with 275 million
GBP (approx 440M USD) capital spend on campus and 80M GBP (130M USD) on new academic staff.


jenda_z's picture

Localization of Inelastic Deformation 2011

Dear colleagues,

I would like to bring to your attention the advanced course on Modeling of localized inelastic deformation that will be taught by Milan Jirasek in Prague, Czech Republic on 12-16 September 2011. More detailed information on the course is posted at http://mech.fsv.cvut.cz/~milan/course2011.html. We are looking forward to seeing you in Prague!


Micro Modelling of Masonry Wall Panel in ABAQUS

Hi All,

 I am doing research of micro modelling of masonry panel using ABAQUS. I try to model the interface using cohesive element in ABAQUS. I want to compare the result with the experimental research available.

Is there anyone here have done that or doing it right now. I have some difficulties to define the interaction between cohesive element and bricks. It is really difficult since I use abaqus standard, to define the surface one by one. Until today I also can not make my cohesive element geometry thickness to be zero.

If some of you already experience with that and succesfully model masonry panel using cohesive element as the interface between brick, could please you share with me.

 looking forward for the answer


ICoBT 2011 - Call for paper - Deadline extended until 29 April 2011

Original research papers, for oral or poster presentation, are invited for the following areas:


Chris W Smith's picture

Chair in Cell Mechanics

Chair in Cell Mechanics, University of Exeter

The University of Exeter
is significantly expanding its capacity in Science and Engineering, with 275 million
GBP (approx 440M USD) capital spend on campus and 80M GBP (130M USD) on new academic staff.


negetive spring

Can some one suggest different ways of making spring of negetive spring constant??

 


Arash_Yavari's picture

Analysis of the Rate-Dependent Coupled Thermo-Mechanical Response of Shape Memory Alloy Bars and Wires in Tension

In this paper, the coupled thermo-mechanical response of shape memory alloy (SMA) bars and wires in tension is studied.It is shown that the accuracy of assuming adiabatic or isothermal conditions in the tensile response of SMA bars strongly depends on the size and the ambient condition in addition to the rate-dependency that has been known in the literature.


Samer Abdul-Qadir's picture

How to model composite using ABAQUS

Hello

I want help to model composite with ABAQUS so any one has assistance or tutorials about the subject I will be appriciate

thanks for all

E-Mailto : samer_aqbdp@yahoo.com


How to view random material properties in ABAQUS

In ABAQUS, I have 100*100 elements and the material properties of each element (say elasticity, angle of friction) varies. How can I view (plot) the mesh as per material properties value (say elasticity) (like colorbar)


Plotting stress-strain graph from simulation

Hi everyone, I am studying an example in Abaqus example problems manual (version 6.10) called "uniaxial rachetting under tension and compression". In the example there is a graph plotting axial stress-strain relationship for experiment data and simulation data. By studying the inp file I knows that the writer has ask for some outputs like RF1, RF2, RF3, S, ALPHA, ALPHAN, LE and so on in certain node and element set. However, I still can't figure out how writer use the output data from simulation to plot the axial stress-strain graph.


Tauno Otto's picture

Professorship in Mechatronics Instrumentation

Tallinn University of Technology
announces the competition for the following professorial position within
Activity 2 of the Doctoral Studies and Internationalisation Programme DoRa:


Tauno Otto's picture

Professorship in Robot Welding

Tallinn University of Technology
(TUT) announces the competition for the following professorial position supported by EU within
Activity 2 of the Doctoral Studies and Internationalisation Programme DoRa:

Professor of Robot Welding at the Faculty of Mechanical Engineering, TUT

Period: 01/09/2011-31/08/2014

Deadline for applications:  May
31th, 2011


Zhigang Suo's picture

Thermodynamics 0, 1, 2, 3

In teaching the elements of thermodynamics in the graduate course on soft active materials, I have followed this sequence:

  • Isolated system:  a system capable of no variation. Entropy, S.
  • Temperature: a system capable of one independent variation. Entropy is a function of energy, S(U).
  • Pressure:  a system capable of two independent variations. Entropy is a function of energy and volume, S(U,V).
  • Chemical potential: a system capable of three independent variations. Entropy is a function of energy, volume and the number of water molecules, S(U,V,N).

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