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jcliao's picture

Call for Papers: Multiscale Modeling and Simulation: from Molecules to Cells to Organisms

Dear Colleague,

We want to draw your attention to and encourage your participation in a special session on Multiscale Modeling and Simulation of the thirteenth Pacific Symposium on Biocomputing (PSB), to be held January 4-8, 2008, on the Big Island of Hawaii. PSB is an international, multidisciplinary conference with high impact on the theory and application of computational methods in problems of biological significance. 

Rui Huang's picture

Senior Software Engineer Position at LUSAS, London

From Dr. Qizhi Xiao :

We are looking for several new permanent staffs, including software developers with solid background on mechanics and good programming skills. the detailed information about the posts can be found from

http://www.lusas.com/joboffers.html

The following is the information for software developers:

-------------------------------------------------------------------------
LUSAS Senior Software Engineer (Ref SSE-W)

How to simulate corrosion layer using ABAQUS

Dear Forum Members:

Does anyone have a chance to simulate a corrosion layer using ABAQUS? If yes, could you please explain to me what type of constitutive model you use; i.e. UMAT?

Thank you and best regards,

Henry Tan's picture

Combined atomistic and continuum simulation

H. Tan, 2003
Chapter 12, Combined atomistic and continuum simulation for fracture and corrosion

Comprehensive Structural Integrity (http://www.sciencedirect.com/science/referenceworks/0080437494)
Volume 8: Interfacial and Nanoscale Failure

Henry Tan's picture

simulations in materials

Interetsed topics include:

  • Material Point Method, eXtended Finite Element Method, and other mesh-free methods;
  • Combined atomistic and continuum simulations;
  • Multiscale homogenization.

Links to other blogs:

zishun liu's picture

Computational Cancer Mechanics

Since Dec. 2006, Institute of High Performance Computing (IHPC) has set up a biophysics research team that comprises research scientists in the fields of biophysics, solid mechanics and fluid mechanics, and has kicked off the "Computational Cancer Mechanics" project.

B.Banerjee's picture

What are the basic difficulties of using the collocation techniques for solving PDE’s?

Hello, Can anybody inform me what are the basic difficulties of using point collocation (strong form) kind of method for solving pde's when compared with solving its weak statement? I have listed a few, known to me,

Markus J. Buehler's picture

Large-scale hierarchical molecular modeling of nanostructured biological materials

There have been several posts recently discussing new directions in computational mechanics. Here is a review article that appeared recently that may be of interest.

Large-scale hierarchical molecular modeling of nanostructured biological materials

Research directions in computational mechanics

Choose a channel featured in the header of iMechanica: 

Dear all,

I just joined this group last week. And, I'd like to share some of reading material that I found regarding research directions in computational mechanics. The paper was published in 2003, written by Tinsley Oden, Belytschko, Babuska and Hughes. It's entitled "Research Directions in Computational Mechanics" (Computer Methods in Applied Mechanics and Engineering, 192, pp 913-922, 2003). They outlined six areas with significant research opportunities in CM:

The 15th ICCES Conference, ICCES08, 17-22 March 2008 Honolulu, Hawaii, USA

Dear Colleague,

We are pleased to announce that the ICCES08( International Conference on
Computational and Experimental Engineering & Sciences) will be held at the
Waikiki Beach Marriott Resort & Spa, in Honolulu, Hawaii, during 17-22 March
2008.

Deadlines:
. 1 Oct 2007: Deadline for Mini-symposia proposals (email: icces@icces.org).
. 1 Oct 2007: Start abstract submission (http://www.icces.org).
. 15 Dec 2007: Deadline for abstract submission.
. 20 Dec 2007: End of abstract selection.
. 1 Jan 2008: Start early registration & hotel reservation (at discounted
rates).
. 15 Jan 2008: Deadline for early registration.
. 1 Feb 2008: Deadline for final 6-page paper submission to:
http://submission.techscience.com/icces08.
. 1 Feb 2008: Technical program announcement.
. 1 Mar 2008: Deadline for the regular registration.

The conference hotel is in a tourist area of the Waikiki Beach in Honolulu.
For those that make reservations by 1 January 2008, the hotel offers a
substantially discounted rate of about US$149/night (single or double
occupancy) (The room rates in Honolulu are normally about $265/night in
Waikiki). The conference deadlines above have been chosen to facilitate
inexpensive hotel accommodations for ALL the participants at the conference
hotel. Further details of ICCES08 will be posted continually at
http://www.icces.org. To ensure that you receive further e-mails about
ICCES08, please "sign up" at http://www.icces.org

If you are interested in hosting a mini-symposium at ICCES08, please send
us an email (icces@icces.org):
. The title of the Symposium,
. A brief description of the Symposium
. A list of potential participants whom you plan to invite( as comprehensive
as possible)

Each presentation at ICCES08 will be of  20 minutes duration (including
discussions). Keynote and Plenary Lectures will be of longer duration.

At ICCES08, very strict procedures will be implemented, to prevent no-shows.
Please submit an abstract, only if you intend to present the paper in
person, in good faith.

All accepted papers will appear in the open access journal, ICCES(
www.techscience.com/icces).

We look forward to welcoming you to Honolulu, Hawaii, in March 2008.

ICCES08 Organizing Committee
Email: icces@icces.org
http://www.icces.org

Ashkan Vaziri's picture

"Persistence of a pinch in a pipe" by L. Mahadevan, Ashkan Vaziri and Moumita Das

The response of low-dimensional solid objects combines geometry and physics in unusual ways, exemplified in structures of great utility such as a thin-walled tube that is ubiquitous in nature and technology.

regarding time integrators : AVI vs Subcycling

Hi to all :

This is my first blog entry . And I have only recently started my Research work (just 2 months) .So please bear with me my lack of thorough knowledge in the topic .

What I want to know is "what is the impact of the papers on Asynchronous Variational Integrators and Variational Integrators (published in 2003) ?" I mean what I was wondering is given that they have so many beneficial properties , how many researcher have actually started using this technique of time integration in their research .

A Discussion on Time Integrators

Hi to all :

This is my first blog entry . And I have only recently started my Research work (just 2 months) .So please bear with me my lack of thorough knowledge in the topic .

What I want to know is "what is the impact of the papers on Asynchronous Variational Integrators and Variational Integrators (published in 2003) ?" I mean what I was wondering is given that they have so many beneficial properties , how many researcher have actually started using this technique of time integration in their research .

International Journal for Computational Vision and Biomechanics

International Journal for Computation Vision and Biomechanics - Announcement and First Call for papers

ISSN: 0973-6778

Subject: Computational Vision and Biomechanics

Frequency: 2 issues per year

Start date: First trimester of 2007

Dear Colleague,

It is a pleasure to announce the new International Journal for Computation Vision and Biomechanics (IJCV&B) and its first call for papers.

International ECCOMAS Thematic Conference VipIMAGE 2007

International ECCOMAS Thematic Conference VipIMAGE 2007 - I ECCOMAS THEMATIC CONFERENCE ON COMPUTATIONAL VISION AND MEDICAL IMAGE PROCESSING

17-19th October 2007, FEUP, Porto, Portugal

Dear Colleague,

The International Conference VipIMAGE - I ECCOMAS THEMATIC CONFERENCE ON COMPUTATIONAL VISION AND MEDICAL IMAGE PROCESSING will be held in the Faculty of Engineering of University of Porto, Porto, Portugal, on October 17-19, 2007.

Marino Arroyo's picture

Maximum-Entropy approximants Matlab routines

Dear iMechanica colleagues,

I would like to announce that Matlab routines implementing the maximum-entropy approximation schemes presented in

Marino Arroyo and Michael Ortiz, “Local maximum-entropy approximation schemes: a seamless bridge between finite elements and meshfree methods”, International Journal for Numerical Methods in Engineering, 65:2167–2202 (2006).

can be downloaded from

Zhigang Suo's picture

What is Grid Computing? How can it be important to mechanicians? When?

At the suggestion of Joy Sircar, the Chief Technology Officer at the School of Engineering and Applied Sciences, of Harvard University, iMechanica has just added a forum called Technology Corner. As Joy has framed it, this new forum intends to host conversations on software and hardware technologies that might be relevant to mechanicians.

Here is a question I have. Lately I've heard the phrase Grid Computing a number of times. It is about networking lots of computers and other electronic devices, and supply users with computing power like supplying electricity. That is, computing power will become a utility. One might even hope software will also become utilities. Some people say that Grid Computing will happen in just a few years, or may be already here. Here is a collection of essays in Nature on 2020 Future of Computing.

THE MOST CITED SCIENTIFIC PAPERS IN SOLID AND COMPUTATIONAL MECHANICS

I posted this survey in Applied Mechanics Research and Researchers on 16 April 2006, based on a survey of Web of Science. A paper making the list satisfied the following conditions:

  • It is in the areas of solid mechanics, mechanics of materials, or computational mechanics, and
  • It has at least 1000 citations.

This list may not be complete. If anyone finds a missing entry, please leave a comment below.

The cited number has been updated up to 18 Dec. 2006.

Angelo Simone's picture

PARTITION OF UNITY FINITE ELEMENT AND MESHLESS METHODS: ADVANCES AND ENGINEERING APPLICATIONS

Choose a channel featured in the header of iMechanica: 

Ninth U.S. National Congress on computational mechanics
July 22 -26, 2007. San Francisco, California

A mini-symposium on

PARTITION OF UNITY FINITE ELEMENT AND MESHLESS METHODS: ADVANCES AND ENGINEERING APPLICATIONS (In honor of Prof. Tinsley Oden's 70th birthday).

Ashkan Vaziri's picture

Mechanics and deformation of the nucleus in micropipette aspiration experiment

Robust biomechanical models are essential for studying the nuclear mechanics and can help shed light on the underlying mechanisms of stress transition in nuclear elements. Here, we develop a computational model for an isolated nucleus undergoing micropipette aspiration. Our model includes distinct components representing the nucleoplasm and the nuclear envelope. The nuclear envelope itself comprises three layers: inner and outer nuclear membranes and one thicker layer representing the nuclear lamina.

Joost Vlassak's picture

COMPUTATIONAL METHODS FOR MICRO AND NANO SYSTEMS

Ninth U.S. National Congress on computational mechanics
July 22 -26, 2007. San Francisco, California

A mini-symposium on

COMPUTATIONAL METHODS FOR MICRO AND NANO SYSTEMS

Call for Papers
Micro and Nano Electro Mechanical Systems have recently attracted much attention from the industry and from the scientific community. MEMS are nowadays routinely met in various fields like in the automotive, aerospace and large consumer applications.
It can be said that for various micro systems the pioneering phase has been substituted by a phase of industrial applications. Hence, new challenges concerning reliability, optimization and increasing miniaturizations must be tackled by the designers. All these issues need a multi-disciplinary approach and must be supported by multi-physics numerical and experimental analyses able to contribute to the definition of a unified design and analysis methodology of MEMS and NEMS.

Ashkan Vaziri's picture

Metallic sandwich plates subject to intense air shocks (by Ashkan Vaziri and John W. Hutchinson)

Recent results on fluid-structure interaction for plates subject to high intensity air shocks are employed to assess the performance of all-metal sandwich plates compared to monolithic solid plates of the same material and mass per area. For a planar shock wave striking the plate, the new results enable the structural analysis to be decoupled from an analysis of shock propagation in the air. The study complements prior work on the role of fluid-structure interaction in the design and assessment of sandwich plates subject to water shocks. Square honeycomb and folded plate core topologies are considered. Fluid-structure interaction enhances the performance of sandwich plates relative to solid plates under intense air shocks, but not as significantly as for water blasts. The paper investigates two methods for applying the loading to the sandwich plate-responses are contrasted for loads applied as a time-dependent pressure history versus imposition of an initial velocity. Click here for the full paper.

Ashkan Vaziri's picture

Deformation of the cell nucleus under indentation: Mechanics and Mechanisms

Computational models of the cell nucleus, along with experimental observations, can help in understanding the biomechanics of force-induced nuclear deformation and mechanisms of stress transition throughout the nucleus. Here, we develop a computational model for an isolated nucleus undergoing indentation, which includes separate components representing the nucleoplasm and the nuclear envelope. The nuclear envelope itself is composed of three separate layers: two thin elastic layers representing the inner and outer nuclear membranes and one thicker layer representing the nuclear lamina. The proposed model is capable of separating the structural role of major nuclear components in the force-induced biological response of the nucleus (and ultimately the cell). A systematic analysis is carried out to explore the role of major individual nuclear elements, namely inner and outer membranes, nuclear lamina, and nucleoplasm, as well as the loading and experimental factors such as indentation rate and probe angle, on the biomechanical response of an isolated nucleus in atomic force microscopy indentation experiment.

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