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Zhigang Suo's picture

Fundamental discoveries in mechanics in recent decade or so

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.

Simpleware Case Study: Total Hip Replacement Implant Positioning

CAD and FE models of hip implants

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. 

Lagrange Multipliers in Multi-body Finite Element Code

Choose a channel featured in the header of iMechanica: 

I'm working on a Multibody dynamics code using the finite element method to simulate the behaviour of flexible beams (using this paper if anyone is interested/ it is relevant). I'd like to model joints, and as I only need spherical friction free joints I believe this should be easy using Lagrange multipliers.

Constitutive modeling of hyperelastic solids reinforced by spheroidal particles under large deformations

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.

R&D engineer opening at Synopsys

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.


  (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.


fem software at altair

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

dyanmics and  fsi algorithms. If interested send resume to 

Faculty recruitment at Southeast University, China


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:


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




To the Editors of EML

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,


Aman Haque's picture

Faculty recruitment at Penn State

Dear Colleagues,

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

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.

Zhigang Suo's picture

What do we want EML to be? How do we get there?

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.

Ideas for a Mechanician

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.




Luke Porisch


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

oliver oreilly's picture

Constraint Moments and Constraint Forces in the Mechanics of Rigid Bodies

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).  

1-3 Piezoelectric Butterfly Curve

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????

mohsenzaeem's picture

TMS 2015 Meet the Candidate Poster Session

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

jiangyuli's picture

Mechanics of Materials Special Issue on Mechanics of Energy Conversion and Storage

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.

COMSOL Course in Houston - Advanced Structural Mechanics

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.

James R. Rice will receive the 2014 Theodore von Karman Medal

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

Postdoc Position - University of Pittsburgh

POSTDOCTORAL ASSOCIATE POSITION University of Pittsburgh The Shankar Research Group ( at the University of Pittsburgh anticipates an opening for a postdoctoral associate starting tentatively in September 2014. The position’s primary area of research will focus on mechanical instabilities and actuation in structures fabricated from photoresponsive, azobenzene-functionalized liquid crystal polymers and polyimides. A background in experimental mechanics and mechanical characterization is required.

Joost Vlassak's picture

Tenure-track Faculty Position in Materials Science and Engineering


Tenure-track Faculty Position in Materials Science and Engineering

Mario Juha's picture

Symmetric global partition polynomials for reproducing kernel elements

The reproducing kernel element method is a numerical technique that combines finite element and meshless methods to construct shape functions of arbitrary order and continuity, yet retains the Kronecker-δ property. Central to constructing these shape functions is the construction of global partition polynomials on an element. This paper shows that asymmetric interpolations may arise due to such things as changes in the local to global node numbering and that may adversely affect the interpolation capability of the method.

Wenbin Yu's picture

cdmHUB: Publish and Run Composites Simulation Tools In the Cloud

We recently launched the Composites Design and Manufacturing HUB (, a community-driven, collaborative platform that has the unique capability to let users to freely publish and run simulation codes in the cloud in addition to all the social network functionalities (blogging, questions/answers, groups, etc.).


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