iMechanica

Dear sir
        I am Ravi dalmeya doing Phd from Indian Institute of Technology,Kanpur (India). I am doing work on adhesive elastic wavy  thin film. I have completed 2-D Hertzian contact between cylinder and elastic half space using Abaqus. Now i want to apply Dugdale-Barenblatt cohesive zone model outside the contact zone and i do not know  how to apply  Dugdale-Barenblatt cohesive zone model outside the contact zone.Can you give me some suggestion?

Thanking you

First announcement

IUTAM SYMPOSIUM  Fracture phenomena in nature and technology
Brescia, Italy, July 1-5, 2012

Web page:  http://events.unitn.it/en/iutam2012

Call for contribution

There are two open junior faculty positions in Stanford’s Mechanical Engineering department.  One is in the area of biomechanical engineering (broadly defined) and the second is theoretical and computational fluid mechanics (broadly defined).

Scientists said on Thursday they recorded particles travelling faster than light - a finding that could overturn one of Einstein's fundamental laws of the universe.

Antonio Ereditato, spokesman for the international group of researchers, said that measurements taken over three years showed neutrinos pumped from CERN near Geneva to Gran Sasso in Italy had arrived 60 nanoseconds quicker than light would have done.

dear my friends:

 I am a new one in the fatigue crack study. as we all konw, there is a crack resistant near the crack tip before its cracking. HRR model has been well testfied in monotanic crack, so i wonder whether it can be expanded to the cyclic crack situation or not! if yes, so how to describe the stress-strain distribution just nearby the tip? can we define a similar resistant value in the cyclic status?and is the stress redistribution concept right for the stress harden material?

any suggestions would be appreciated!

regards, Long

The international SIMULIA Customer Conference (SCC2012) will be held May 15-17, 2012 in Providence RI, USA. Abstracts for papers are due November 7, 2011.

All users of SIMULIA products including Abaqus FEA, Multiphysics, Isight and Simulation Lifecycle Management (SLM) are invited to submit an abstract.

Good day, dear colleges.

Call for Papers - deadline 9 December 2011

Submit your abstract here: www.fatiguedamageconference.com 

We welcome poster and abstract submissions on the following topics:

Gurtin–Murdoch continuum surface elasticity model is employed to study the buckling
delamination of ultra thin film–substrate system. The effects of surface deformation and
residual stress on the large deflection of ultra thin film are considered in analysis. A
concept of effective bending rigidity (EBR) for ultra thin plate is proposed on the basis of
Gurtin–Murdoch continuum theory and the principle of minimum potential energy. The
governing equations with EBR are formally consistent with the classical plate theory,

 No more applications will be considered for the above mentioned the position.

 Thank you for the interest.

Dear All,

I am looking for one postdoctor to work on advanced concrete materials and modeling. The desired candidates will have a solid knowledge on concrete materials and mechanics, and are familiar with advanced modeling of hydration, water or chemical transfer in concrete. Extra considerations will be given to candidates with some experimental experiences on concrete microstructures and material characterization.

Dear All,

I am looking for highly motivated PhDs/PostDocs to join my group to work on various aspects of efficient high-fidelity modeling of composite structures/materials, mainly related with VABS/VAPAS/VAMUCH. The basic qualifications are: basic training in solid mechanics and composite materials, excellent math and programming skills, and good English communication skills. Please let me know if you are interested or if you know somebody is interested.

Wenbin Yu

Dear friends: I am a PhD candidate studying fracture problems in tubes. I am doing J integral calculations in Abaqus, for tubes with through-wall circumferential cracks subjected to tensile and bending loads. I am using quadratic 20 nodes isoparametric elements with reduced integration (C3D20R), ranging from two to five elements through the wall thickness mesh.

Hello Everybody, this is my first post here.

Dear Mechanicians,

I have got an offer to do PhD in computational seismology in a very good university in Europe, however, I have no idea what sort of career I should expect after getting my PhD in this field. I got my BSc and MSc in mechanical engineering but have never worked in the field of geophysics and seismology. Therefore I am hesitating whether to take the offer or not. 

Can anyone guide me in clearing this doubt? I would like to get the values of normalized flow stresses Vs Strain rate for 304 L stainless steel and Ti-6Al-4V. This values will be used as an input for simulating fan blade-out event. This values will be used since this process involves higher velocities, higher deformations and it occurs in less time.

Several methods have been proposed for numerical homogeniation of linear viscoelastic materials, mainly based on Laplace transform or on multilevel (FE^2) approaches. In this paper, we introduce a much simpler technique based on a discrete representation of the effective relaxation tensor related to the homogeneous medium, which can then be used to evaluate the constitutive law in the form of a convolution product. In practice, calculations on the RVE reduce to 3 transient simulations in 2D and 6  in 3D. More details in

The Department of Industrial Engineering at the University of Pittsburgh anticipates an opening for a postdoctoral associate starting January 2012. The position’s primary area of research will focus on mechanics of micro-scale deformation processes and characterizing the thermomechanics of deformation at micrometer length-scales. Applicants with a strong background in computational solid mechanics and crystal plasticity will be preferred. 

Dear My friends:

‚Source truncation and exhaustion: Insights from quantitative in-situ
TEM tensile testing' by D. Kiener and A.M. Minor (http://dx.doi.org/10.1021/nl201890s).