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Postdoc Position in Computational Mechanics - Ohio State University

Submitted by soheilsoghrati on
job

The Automated Computational Mechanics Laboratory (ACML) at The Ohio State University has an immediate opening for a one-year postdoctoral research associate position. The project is aimed at the application of the finite element method for simulating and optimizing the laser ablation process in aircrafts. The optimization process involves characterizing the optimal laser parameters (e.g., peak power, fluence, intensity, etc.) to maximize the coating removal efficiency while minimizing damage to the substrate material.

ASME IMECE 2015 Symposium 12-25: "Mechanics and Materials in the Oilfield"

Submitted by Pedro Reis on
conference
oil field
hydraulic fracturing
fracturing Fluids
high temperature polymers
tubular mechanics
drilling
wellbore zonal isolation
Swellable seals

We would like to invite you to give a contributed talk at our symposium on “Mechanics and Materials in the Oilfield”, at the ASME IMECE November 13-19, 2015 in Houston, Texas.

Please forward this announcement to others you think may be interested in participating.  

12-25 Mechanics and Materials in the Oilfield

Update: Journal Club Entry July 2014: Overcoming Challenges in Liquid Crystalline Elastomers

Submitted by Chris Yakacki on
research
Liquid Crystalline Elastomers
Active Polymers
Shape Memory Polymers

Dear iMechanica,

Last July I posted a journal club entry on overcoming the traditional challenges in mechanically actuating liquid-crystalline elastomers (http://imechanica.org/node/16853). I'm glad to say we finally got our first manuscript regarding this work published in RSC Advances (DOI: 10.1039/C5RA01039J). 

Model for static and kinetic friction (rate and state)

Submitted by Srivatsan Hulikal on

We recently proposed a model for rate and state friction by studying the collective (statistical) behavior of viscoelastic asperities. Various observed features of friction emerge as collective phenomena, without postulating them directly at the microscale. The paper is available at the link below. 

http://www.sciencedirect.com/science/article/pii/S0022509614002063

 

Thank you.

Lateral Torsional Buckling of Steel I Beams by ABAQUS

Submitted by Imran149 on

Hi,

I am new in ABAQUS. I tried a lot to find the critical lateral torsional buckling moments from ABAQUS for simply supported Steel I beams. I modelled an I beam with shell element and define the sections. I meshed it by number. Then I did buckle analysis with 4 eigen values in step part. I create boundry condition as a simply supported beam using those node of after meshing and I also applied uniform moment at two end.

 

But, how do i find the critical moment for LTB? Again, is there any procedure to follow? 

 

Thanks in advance.

IMECE 2015 Symposium: Modeling and experimental characterization for the behavior of the micro/nanostructured thin films

Submitted by danial_faghihi on
conference
thin film
size effect
nonlocal theory
microstrctural evolution
manufacturing

 We would like to invite you to participate in a symposium on “Modeling and experimental characterization for the behavior of the micro/nanostructured thin films” in ASME 2015 International Mechanical Engineering Congress & Exposition
November 13 – 19, 2015 
Houston, Texas. The deadline for abstract submission is March 2, 2015.

Organizers:

Danial Faghihi, Institute for Computational Engineering & Sciences,UT Austin

How to understand the oscillating behaviour during calculating stress

Submitted by Weijie Liu on
mechanician
stress calculation

Dear all,

Why we have an oscillating behaviour when calculating stress in FEM?

I saw the sentences in the paper:

'Another reason is that stresses are less accurately predicted than strains in FE simulations. Calculated stresses do also show a tendency for an oscillating behaviour, especially in dynamic explicit simulations.'

'stress is less accurate predicated than strain' is easier to understand, but I was wondering the existence of oscillating behaviour for calculating stress.

 

Any comments are welcome.

Rotating deformable parts in eroding contact in Abaqus Explicit

Submitted by Saqibanwar on

I am trying to model (3D) dressing process in which both the dressor and the grinding wheel are rotating as deformable bodies using ABAQUS 6.13 (Explicit analysis). I want to simulate a small portion from both wheels rotating against each other with general contact. To rotate them I am applying coupling constraint. However, when I apply coupling constraint to rotate the wheels with their respective reference points (RP's), they become rigid in sense that no stresses are developed. Even if I apply only VR3 to RP's, no stresses will develop in the grinding wheel or dressor.

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