Finite Element Method

Simulation-based numerical optimization of arc welding process for reduced distortion in welded structures

This paper presents an effective numerical approach for welding process
parameter optimization to minimize weld-induced distortion in
structures. A numerical optimization framework based on coupled Genetic
Algorithm (GA) and Finite Element Analysis (FEA) is developed and
implemented for a low and a high fidelity model. Classical weakly
coupled thermo-mechanical analysis with thermo-elasto-plastic
assumptions is carried out for distortion prediction of numerical
models. The search for optimum process parameters is executed by direct
integration of numerical models and GA-based optimization technique. The
developed framework automatically inserts the process parameters into
the simulation models, executes the FE-based welding simulations and


Online finite element analysis of nanoindentation (indentation)

Dear All, 

 

We (the NanoBIO Node at Illinois ) have a preliminary release of an online finite element analysis of nanoindentation (indentation) tool using FEAP

This preliminary release is limited to linear elastic material, axisymmetric geometry, spherical rigid indenter, and various boundary conditions. 

We are currently working on adding viscoelasticity (Prony series), cylindrical and conical rigid indenters, and loading functions. 


marco.paggi's picture

Competition for a post-doc position on computational mechanics now open at IMT Lucca

Dear Colleague,

this is to inform you that the research unit MUSAM "Multi-scale Analysis of Materials" (http://musam.imtlucca.it) at the IMT Institute for Advanced Studies Lucca (Italy) has opened 1 Post-doctoral Fellow position (1 year but renewable for a maximum of 3 years in total) on Computational mechanics applied to solar energy materials, related to the ERC Starting Grant CA2PVM
(http://musam.imtlucca.it/CA2PVM.html) and under my supervision.

The link to the call is:
http://www.imtlucca.it/faculty/positions/junior_faculty_recruitment_prog...

The link to the application form is:


marco.paggi's picture

Call of interest - Post-doc position at IMT Lucca on computational mechanics for photovoltaic applications

This is a call of interest for a post-doc position (1 year renewable up to 3 years) at the IMT Institute for Advanced Studies Lucca, Italy (www.imtlucca.it), in the field of computational damage and fracture mechanics. The activities are in the framework of the ERC Starting Grant IDEAS "Multi-field and multi-scale Computational Approach to design and durability of Photovoltaic Modules" (Prof. Paggi, Principal Investigator).

For more details about the project, see:

http://staff.polito.it/marco.paggi/CA2PVM.htm

and for the research unit Multiscale analysis of materials - MUSAM:

http://musam.imtlucca.it


WaiChing Sun's picture

PhD position in computational poromechanics at Columbia University

The computational poromechanics laboratory in the Civil Engineering and Engineering Mechanics Department is seeking a PhD candidate for Fall 2014 semester. The sucessful candidate should have (1) a master degree in applied mechanics, geomechanics or related disciplines, (2) a strong background in engineering mathematics, continuum mechanics, finite element method and computational plasticity, (3) be proficient in C++ and FORTRAN code developments and (4) possess excellent communication skills. Knowledge in discrete element/attice Boltzmann method, geostatistics and multiscale modeling is a plus.


Ettore Barbieri's picture

PhD Studentship available at Queen Mary, University of London in the SEMS

Research Studentship (PhD) in Computational Material Science: the topic is computational nano mechanics and concurrent multiscale methods for composites under impact loading.


Lee Margetts's picture

Research Associate in 4D Image based quantification and simulation

An excellent opportunity to work in a world leading team with privileged access to facilities that most researchers can only dream about.

Closing date: 18/04/2013
Reference: EPS-02440
Faculty / Organisational unit : Engineering Physical Sciences, School of Materials
Division : X-Ray
Imaging


N. M. Nhan's picture

Shell and Finite Element Method

I'm study about shell and i need some ebooks to read. Coud you here give me some? Thanks a lot.


Jie-Hua Zhao's picture

Sr. Packaging Mechanical Analyst at Apple

 Sr. Packaging Mechanical Analyst

  • Job Number: 25557504 
  • Santa Clara Valley, California, United States
  • Posted: Jan. 3, 2013
  • Weekly Hours: 40.00

Job Summary

Mechanical engineer working in the central IC packaging group.

Key Qualifications


Radiation in 1D beam finite elements

Hi everyone,

 

Has anyone ever come across the treatment of radiation heat transfer in one-dimensional beams using FEM ? Convection and conduction are well established, but I was wondering whether radiation is still an open area of research?

 Any links to publications would be very much appreciated, Thank you


mgirard's picture

Research Associate/Postdoctoral Fellow - In Vivo Corneal Biomechanics - National University of Singapore [POSITION FILLED]

Job description: We are looking for a smart, dynamic, and highly motivated individual with a PhD to perform groundbreaking research in biomechanics with applications to ophthalmology. We are currently developing engineering tools for the diagnosis and therapy of ocular disorders (e.g. glaucoma and myopia). For more information regarding our In Vivo Biomechanics Laboratory, please visit http://www.bioeng.nus.edu.sg/ivb.


Problems with numerical integration of discontinuous functions

Hi everybody,

 I am a very beginnerin doing research :-) and my topic is about "micro indentation analysis using continuum dislocation theory". I am applying high-order finite element method for this nonlinear problem.

My plan is first writing a subroutine for the element. However, when I intend to compute the internal force by using Gauss integration, I see a problem with the integrand function of some index of the internal force vector. This integrand is discontinuous function. It is therefore, I cannot get a good approximation with the standard Gauss integration. 


Problems with numerical integration of discontinuous functions

Hi everybody,

 I am a beginner in doing research :-) and my topic is about "Micro Indentation Analysis using Continuum Dislocation Theory". I am applying high-order finite element method for this nonlinear problem.

 My plan is first writing a subroutine for the element. However, when I intend to compute the internal force  by using Gauss Integration, I see a problem with the integrand function of some components of the internal force vector. This integrand is discontious function. It is therefore, I cannot get a good approximation with the standard Gauss integration.


Post-doc position opening in POSTECH, South Korea

A postdoctoral researcher position is available in the area of sheet metal forming, plasticity theory, computational modeling of forming of advanced high strength steels, light-weight alloys  at POSTECH (Pohang University of Science and Technology) working under the supervision of Prof. Myoung-Gyu Lee. He/She will also work with Prof. Frederic Barlat who is a world famous scholar in the field of plasticity. Candidates with a strong background in plasticity theory, computational mechanics of sheet metals, failure analysis are highly encouraged to apply. Applicants must provide a detailed CV including experience and qualifications, list of publications, and research plan.


Mubeen's picture

Strain Gradient Plasticity

Hi all,

I have a strange question that has puzzled me since last almost one year.

There are many SG-plasticity models in the technical literature, sometimes categorized as lower-order or higher-order models.

The problem is :

the constitutive models include the gradient of plastic parameters (e.g. plastic slip).


PBC implementation in equilibrium equation

Hi, guys,

 Do some of you know how Periodical Boundary Condition is implemented in equilibrium equation while using FEM:

div{ C:sym[grad(u)] } = 0 ,where the displacement u is periodical.

Is there any (detailed) documentation about this stuff?

 

Thank you very much!

 


nicoguaro's picture

Spectral Element Method Mesher

Hi,

Is there a free/open-source mesher for the Spectral Element Method?

I know some researchers use conventional mesher with order 3 elements and then include more nodes in the meshes (but without improve the geometric interpolation).

Thanks in advance,

Nicolás Guarín Z.


mohsenzaeem's picture

Immediate opening for a Ph.D. student in computational mechanics and materials at Missouri University of Science and Technology

There is an immediate opening for a Ph.D. student in the Department of Materials Science and Engineering at Missouri University of Science and Technology (Missouri S&T - formerly University of Missouri-Rolla). The Metallurgical Engineering program at Missouri S&T is one of the largest and most respected in the U.S. (http://mse.mst.edu).

The Ph.D. research project is about developing a coupled phase-field crystal plasticity model for predicting stress-strain-microstructures relations during deformation.


Marc-Andre Keip's picture

PhD-Position in Initial Training Network (ITN): FE-Modelling of electromechanically coupled materials

Discover the NANOMOTION World as an Early Stage Researcher (PhD student) in an EU-wide program on “Nanoelectromechanical Motion in Functional Materials (NANOMOTION)”!

The individual project:

“Finite-element modelling of electromechanically coupled materials”

will be hosted at University of Duisburg-Essen (Germany), www.uni-due.de/mechanika, with secondment to the University College Dublin (Ireland).


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