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Yonggang Huang's picture

Professor Xuanhe Zhao will receive the Journal of Applied Mechanics Award in 2015

Prof. Xuanhe Zhao from MIT will receive the 2015 Journal of Applied Mechanics Award for his paper "Phase diagrams of instabilities in compressed film-substrate systems " (Journal of Applied Mechanics, v 81, article 051003, 2013).  

Cohesive debonding using traction separation law

Hi Everyone,

 

I am trying to model peeling of polymeric film over metal substrate. I am uisng a zero thickness cohesive element layer between the film and substrate. In abaqus the quads mode is what I use and mode independent. I have a maximum displacement of 0.0001 m for damage evolution. I also have nominal stress normal only mode as 100 and Normal stress first direction as 50. 

Call for Abstracts-ASME McMAT 2015: Symposium 10: Fundamental Biomechanics and Biomaterials Invention for Translational Medicine

Dear Colleagues, 

We are inviting you to submit abstracts on ASME McMAT 2015: Symposium 10:

Fundamental Biomechanics and Biomaterials Invention for Translational Medicine.

 

Fabrice Pierron's picture

3 year post-doctoral position available - High rate testing of materials

As part of my EPSRC Fellowship programme, I am now recruiting the second post-doctoral fellow associated with the project. I am looking for a talented young researcher with skills in experimental mechanics, particularly in the field of high rate testing of materials and high speed imaging for full-field deformation measurements. Informal enquiries can be made directly to me at f.pierron@soton.ac.uk, attaching a CV.

Overestimated peak strength for cube compression. Abaqus/Explicit

Hi,

I have done compression test for concrete cube using Concrete damaged plasticity model. I assigned BC in Reference point which I coupled with a surf of the cube.

I have got stress-strain curve that looks nice, but Peak strength is 2-3 times higher than it should be.

Ia have uploaded pic of force-displacement.

Can anybody help me?

Thanks

ABAQUS: Thermal stresses in a rectangular composite plate

Trying to model a crossply square plate with a sinusoidal temperature loading (uniform along the thickness). I am trying to match the results by Kant et al 2008 and Rohwer et al 2001. I am modeling the compoosite as a 3-D solid elements (making a part and dividing into 4 layers). I always obtain transverse shear stress on the 90 degree layer at 0,b/2,z to be zero.  My results match with that of the paper when I have a single layer of orthotropic material but they dont match when I have 4 layers of equal thickness and an aspect ratio of 5 (length/thickness).

 

Kejie Zhao's picture

Symposium on Mechanics of Materials in Energy Technologies at McMAT2015

Dear Colleagues,

Please consider to attend the symposium entitled  "Mechanics of Materials in Energy Technologies"  at the occasion of ASME 2015 Applied Mechanics and Materials Conference, 6.29-7.1, 2015, in Seattle.The conference occurs every four years and covers all aspects of mechanics and materials: theoretical, experimental, and computational.

The description of the symposium is below.

CFP: Mini-symposium at 13th US National COngress on Computational Mechanics (USNCCM13)

We invite you to submit abstracts to this Simpleware-sponsored minisymposium

Deadline: February 15, 2015

13th US National Congress on Computational Mechanics (USCNCCM13)

July 26-July 30, Manchester Grand Hyatt, San Diego, CA

Mini-symposium - Biomechanics Modeling: Advances and Applications to Real-World Problems

Organiser: Petr Krysl, University of California, San Diego

mmakaremi's picture

Abaqus contacting thin membrane

Hello everyone,

I'm a beginner in Abaqus. I must simulate effect of water stream on thin membrane contactin with ground. Which element type do you suggest? Can STRI65 be a good option?

Thanks in advance

Best

 

What is petroleum Engineering?

Petroleum Field Services team is currently looking for Coil Tubing Field Engineers. coiled tubing refers to a very long metal pipe, normally 1" to 3.25" in diameter. which is supplied spooled on a large reel. Petroleum engineering is primarily concerned with the economic extraction of oil, gas and other natural resources from the earth. It is involved in nearly all of the stages of oil and gas field evaluation. There are divided into several group such as petroleum geologists, reservoir engineers, production engineers and drilling engineers.

Call for Abstract - McMat2015 Symposium 17: Mechanicas of Materials in Extreme Environments

The ASME 2015 Applied Mechanics and Materials Conference (McMat2015) will be held in Seattle, Washington, USA,  June 29-July 1, 2015.  We are organizing a symposium at this conference - Symposium 17: Mechanics of Materials in Extreme Environments. 

Post-doctoral position available at École Polytechnique France

 A 1-year post-doctoral position is available at École Polytechnique to work on the experimental characterization and the multiphysics modeling of carbon nanotube based sensors.

See full details in attachment.

Cavitation in Rubber: An Elastic Instability or a Fracture Phenomenon?

The viewpoint that cavitation in rubber — that is, the sudden growth of inherent defects in rubber into large enclosed cavities in response to external stimuli — is a purely elastic phenomenon has long been known to be fundamentally incomplete. Essentially, this is because the local stretches around the defects at which cavitation initiates far exceed the elastic limit of the rubber, which therefore ought to inelastically deform by fracturing to accommodate their growth.

marco.paggi's picture

MUSAM - Multi-scale Analysis of Materials - Annual report 2014

Dear Colleague,

 

I would like to inform you that the annual report on the scientific and educational activities carried out by the research unit MUSAM on Multi-scale Analysis of Materials at IMT Lucca during 2014 can be downloaded from the following link:

 

Free 1 hour turbocharger webinar | Wednesday 28 January

Webinar 1 - Design of high efficiency Turbocharger/e-charger compressors by 3D Inverse design method

In this one hour free webinar we will use two specific examples to show how and why the 3D inverse design method can result in breakthrough designs that improve the turbocharger efficiency and yet meet the requirements for good stress and vibration and wide operating range. The two cases will be:

ysfouad's picture

Direct Dynamic Analysis Method (DDAM) of the US Navy... Not found in Abaqus 6.14!!

I worked with Direct Dynamic Analysis Method (DDAM) of the US Navy with Abaqus in 2007, but when I revisit it again in 6.14 version I didn't find it and it is not in the documentation also. Is it removed from Abaqus? and  why? In ship building industry, they use it heavily till now.

Please, find the attached file about the method from a Simulia document in 2007

Short Course on Mechanics of Foams

A short course on the “Mechanics of Liquid and Solid Foams” will be offered at CISM, the International Centre for Mechanical Sciences in Udine, Italy, 13-17 July 2015 (see brochure attached).

Recoverable plasticity in penta-twinned metallic nanowires governed by dislocation nucleation and retraction

AbstractThere has been relatively little study on time-dependent mechanical properties of nanowires, in spite of their importance for the design, fabrication and operation of nanoscale devices.

Case Study: Modelling Ultrasonic Array Response of Real Cracks

Stress corrosion cracks can be a serious problem in many engineering industries, and especially so for critical parts. While an ultrasonic transducer can be used for the non-destructive evaluation of cracks with simple shapes, complex branching cracks, such as stress corrosion cracks, require ultrasonic arrays that consist of multiple transducers and are able to inspect at multiple angles.

moorekwesi's picture

Positions for PhD students and postdoctoral researchers

 

Positions for PhD students and postdoctoral researchers
at the Institute of Applied Geometry, JKU, Linz, Austria

 

 The Institute of Applied Geometry at Johannes Kepler University
(www.ag.jku.at) has vacant positions for PhD students and
postdoctoral researchers. Applicants should possess a background
in geometric modeling, computational geometry or numerical analysis.

 

mohsenzaeem's picture

Quantitative modeling of the equilibration of two-phase solid-liquid Fe by atomistic simulations on diffusive time scales

Molecular dynamics (MD) simulations based on the modified-embedded atom method (MEAM) and a phase-field crystal (PFC) model are utilized to quantitatively investigate the solid-liquid properties of Fe. A set of second nearest-neighbor MEAM parameters for high-temperature applications are developed for Fe, and the solid-liquid coexisting approach is utilized in MD simulations to accurately calculate the melting point, expansion in melting, latent heat, and solid-liquid interface free energy, and surface anisotropy.

Alejandro Mota's picture

Postdoctoral Appointee – Computational Mechanics - Sandia National Laboratories – Livermore, CA

About Sandia

Sandia National Laboratories is the nation's premier science and engineering lab for national security and technology innovation. We are a world-class team of scientists, engineers, technologists, post docs, and visiting researchers all focused on cutting-edge technology, ranging from homeland defense, global security, biotechnology, and environmental preservation to energy and combustion research, computer security, and nuclear defense. 

To learn more, visit http://www.sandia.gov.

Friction modeling LAMMPS

Hi All,

 

Is there any one working on modelling of friction using LAMMPS to discuss an issues?

 

Best

 

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