FEM

Marisol Koslowski's picture

Postdoctoral position in Computational Solid Mechanics - School Of Mechanical Engineering Purdue University

A postdoctoral position is available starting Fall 2008 in the area of computational solid mechanics. A successful candidate is expected to have a strong background in multiscale modeling and programming experience. While experience in plasticity using finite element methods or dislocation dynamics is a plus , all outstanding candidates will be considered.

Applicants must provide a detailed resume and  at least three references to: Prof. Marisol Koslowski, marisol@purdue.edu.


DoQuangHuy's picture

I am looking for a PhD Studentship

Hi, I am a master student in Stuttgart University of Germany
I study Computational Mechanics of Materials and Structures

http://www.msc.commas.uni-stuttgart.de/index.html  


Discovering the power of Oofelie Multiphysics

DISCOVERY OF Oofelie V2.6,

an industrial multiphysics solution fully integrated in Samcef Field , the gui also used by all Samcef solutions.

 

About Open-Engineering and Oofelie®


2nd position in the oil industry

Our Agency, Reliability Analysis Associates, Inc., is seeking candidates for the "Manager, Methods and New Product Support" position described below.   Note that the position requires significant work experience in industry.  Salary range: $90K - $130K per year.

 

 

 

Reliability
Analysis Associates, Inc.


Position in the oil industry

Reliability
Analysis Associates, Inc.

1440 North Lake Shore Drive, #30F,
Chicago, IL 60610

Phone:
312-274-0542;  Fax: 312-274-0574;  E-mail: reliability@nidus.com


Ajit R. Jadhav's picture

FEM: How should it be taught?

I am designing a new course on FEM, to be offered privately in India. It will emphasize fundamentals, and try to supply (or bring out) the physical interpretations behind the mathematical formalisms.

More details: It probably will be directed to the working engineer who has already used existing commercial package(s). The initial idea is to split it up over about 6 week-ends, 4 hours per day of the week-end (say Saturday and Sunday each). However, minor details like that may change. I just wanted to give an idea of the length of the course, the time available for class-room interaction, that's all. Please see the attached brochure. (A typo in the test is now corrected in the version 0.7).


Ajit R. Jadhav's picture

Banding in FEM

I know the following: In linear FE analysis with linear constitutive law, say CST, there will not be any discontinuity across the adjacent (or neighboring) elements, for any of the fields---displacements, strains or stresses. But I do have certain questions that are not very well addressed in the introductory FEM texts:

(i) Assuming a displacement-based formulation, under what conditions would you expect discontinuities (or inter-element banding) to possibly appear in: (a) stresses? (b) strains? (c) displacements?


pedroso's picture

MechSys Open Library for Mechanical Systems

MechSys is a C++ library to help the implementation of software for Mechanical Systems. There are 4 main modules in the library:


Ajit R. Jadhav's picture

Why not use FDM in solid mechanics?

Finite Difference Method (FDM) and the related techniques such as FVM, are often found put to great use in fluid mechanics. See any simulation showing not only streamlines but also vortex shedding, turbulent mixing, etc.

Yet, when it comes to solid mechanics, Finite Element Method (FEM) is most often the method of choice. Actually, FEM is probably the *only* computational method used in solid mechanics. Most books on solid mechanics and structural analysis do not even mention FDM. A few that do, restrict FDM only to the Laplace's equation and the bi-harmonic equations--not to the general stress analysis problem in 3D.

Why is this so?


Arief Yudhanto's picture

Time-History Analysis of Simple Structures under Shock

Dear all mechanicians,

I modeled a disk with outer diameter of 48 mm and inner diameter of 24 mm. The material is defined as isotropic; in this case, it's glass-ceramics (E = 90GPa, v = 0.24). The inner diameter is constrained to transverse directions, while it is subjected to half-sine wave impulse of 500G (G = 9.81 m/s^2) within 2 ms. The disk moved up under this loading, and I extracted the vertical displacement at the tip with respect to time (time-history analysis). The time step was 1e-6 second, and the duration was 4 ms. The disk was made of 8-node hexahedron element, with one element in the thickness. Three formulations were tested: (1) reduced integration [RI], (2) selectively-reduced integration [SRI] and (3) full integration [FI].


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