iMechanica

Two POSTDOCTORAL ASSOCIATE POSITIONS will be available at University of Houston. The start dates are flexible, and hopefully be filled by the end of Fall 2014. Applicants are sought in the general area of (theoretical and/or computational and/or experimental) solid mechanics, structural mechanics, structural engineering, materials science, and microelectromechanical systems (MEMS).

There have been several discussions on "Extreme Mechanics" in recent weeks and I would like to extend this topic to "Extreme Computing". As we develop materials that are more complex, hierarchical and are spanning multiple spatial scales, we will need computational tools that can describe them well. Fluid dynamics community has long time ago embraced large-scale computing of conservation laws of mass, momentum and energy. In mechanics of materials, large-scale computing is still in infancy.

For flexible electronics applications it is important to understand the behavior of electrical resistance of metal films on polymer substrates under applied tensile strain. Although the growth of resistance during tensile loading was investigated in a number of research papers, the recovery of resistance during unloading remains virtually unexplored. In this paper, substantial recovery (decrease) of electrical resistance during and after unloading is demonstrated for copper films on polyethylene terephthalate (PET) substrates subjected to a tensile strain with different peak values.

Abstract

All -

Are there good references related to acoustic heating?  I am interested in the ability to scale down the effects of this process and looking for ideas in model development to assist.

Regards,

Luke

A previous post, Getting Ready for Extreme Mechanics Letters, contained the following paragraph:

“We seek papers from researchers in all disciplines. Mechanics appeals to talents of all kinds. Good mechanics has long been created by people from many fields, by Galileo, Newton, Maxwell and Faraday, as well as by Watt, Darwin, Wright brothers and Whitesides. People make discoveries in mechanics often when doing something else (e.g., in seeking evidence for the existence of God, in building cathedrals, in flying airplanes, in laying transatlantic telegraph cables, in fabricating microprocessors, in watching cells move, in fracking for gas, in inventing optical tweezers, in creating soft lithography, in developing wearable or implantable electronics). Mechanics discovered in one field invariably finds applications in other fields.”

Here I would like to give several examples of papers published in recent decade or so. I will link each paper to its citations on Google Scholar, so that you can have an overview of the influence of the paper on other researchers.

Positioning hip implants poses a number of challenges, particularly in terms of getting bone and implant contact right. While experimental testing can be costly, image-based modelling can be very effective at predicting the best and worst positions for implants. 

This paper presents a homogenization-based constitutive model for the mechanical behavior of particle-reinforced elastomers with random microstructures subjected to finite deformations. The model is based on a recently developed homogenization method (Avazmohammadi and Ponte Castaneda 2013; J. Elasticity 112, 1828–1850) for two-phase, hyperelastic composites, and is able to directly account for the shape, orientation, and concentration of the particles.

This position is for a senior R&D engineer who will work on the development of industry leading Finite Element/Finite Volume simulation tools. Primary responsibilities include developing solid elements and advanced material models.

Requirements:

  (1) Strong mechanics and FEM background

  (2) Solid programming skill in C++

  (3) Ability to work as a team player, as part of a local and globally R&D team

  (4) Good oral and written skills

You can apply online at Synopsys website or forward your resume to me.

we are looking for a fem software developer. The primary focus is developing implicit structure

dyanmics and  fsi algorithms. If interested send resume to xmeng@altair.com 

Faculty recruitment at Southeast University, China

Southeast University is a Key University in China (985,211 project) located at Nanjing City. 

We are searching for new faculty to work in the Department of Mechanics. 

Major needed:  Ph.D.  in Mechanics/Materials Sciences/Physics or related.

Communicate e-mail: jxmeng@seu.edu.cn

If you are interested, please send us e-mail without hesitation.  

Welcome!

Dear Editors,

The first step of starting EML looks promising and with the help of academic people in this community, I think EML has generated enough heat with lots of interesting view points.

We all know that there has been lots of discussion in the imechanica community regarding open source journals, had any one thought about making EML fully open source?.

Thanks and Regards,

Rohith

Dear Colleagues,

Penn State University Mechanical Engineering is accepting applications for five tenure track faculty positions. Please see the website for details

http://www.mne.psu.edu/About/PSU_MNE_Faculty%20Positions_2014.pdf

For the emerging areas - we are looking at themes such as additive manufacturing, metamaterials, 2D materials, data driven modeling, extreme environment mechanics or a fusion of these.

Starting a new journal is risky.  Starting a new journal in mechanics is particularly risky.  The responses to the two recent posts are encouraging, however.

• Getting ready for Extreme Mechanics Letters

• What can iMechanica do for Extreme Mechanics Letters

Hello All - 

I am soliciting advice for how to continue to keep mechanics skills sharp while in a more business/leadership role.  

Please advise on techniques you have used or suggestions for ways to stay current.  

Thank you for your input and for your continued development of this discipline.

Regards,

Luke Porisch

p.s. - if you were Harvard DEAS from 2003-05 please send me a note!

For those of you preparing to teach a course on Lagrangian Mechanics of Rigid Bodies in the forthcoming semester or quarter, you may be interested to read a new expository paper by Arun Srinivasa at Texas A&M and myself:

 A Simple Treatment of Constraint Forces and Constraint Moments in Rigid Body Dynamics, ASME Applied Mechanics Reviews, To Appear (2014).  

Hello Everyone,

I try to plot the butterfly curve for piezoelectric material (strain vs. electric field for different applied stress values). Butterfly curve shows the nonlinear response of the piezoelectric material which is a hysteretic response.

I just want to ask you guys if anybody knows a good way to plot butterfly curve for 1-3 piezoelectric materials in matlab????

The TMS Young Professionals Committee is organizing a "Meet the Candidate Poster Session" in conjunction with the general poster session of TMS 2015. This event is designed to create networking opportunities for young professionals and hopefully help them discover prospects for future employment. 

The Meet the Candidate Poster Session will provide the opportunity for

As advanced energy materials with higher conversion efficiencies, enhanced storage capacities, and better reliabilities are being developed to meet the ever-increasing global energy needs, mechanics has emerged as one of the key factors that affect the performance of energy systems. In thermoelectric energy conversion for waste heat recovery, thermal stress is a big concern for reliabilities, and the efficiency and reliability of photovoltaic materials is similarly affected by strain and mechanical defects.

Veryst Engineering is offering a 2-day in-person training course on Advanced Structural Mechanics using COMSOL Multiphysics. The course will be in Houston on November 3-4, and it will cover basic and advanced structural/solid mechanics capabilities in COMSOL including contact, material modeling, and fatigue. I will teach the course together with Dr. Stuart Brown, Veryst’s Managing Principal.

Professor James R. Rice, of Harvard University, will receive the 2014 Theodore von Karman Medal.  Here is a link to an announcement.