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Strain compatibility equation in non-linear solid mechanics!!!

Submitted by ramdas chennamsetti on

We have six strain compatibility equations, which are obtained from strain-displacement relations by making an assumptions 'small strains'. Strain compatibility equations ensure a single valued and continuous displacemnet filed. These equations are used in stress based approach.

Now my queries are as following.

[1] Do we have strain compatibility equations for non-linear strain-displacement relations?

[2] Do we follow stress based approach in non-linear solid mechanics.

Analytical solution for deflection of plate

Submitted by J. K. Phadikar on

I am a third yr undergraduate student of Aerospace Engineering department, IIT Kharagpur. I have a very simple question in strucutral mechanics. Is there any analytical solution available for deflection of plate under distributed load? The governing equation is well known and has been attached as an image file. Only classical plate theory can be considered. The boundary conditions can be taken as classical boundary conditions. So that can be any combination of a) hinged b) clamped and c) free boundary conditions.

The Fourth International Conference on Multiscale Materials Modeling October 27-31, 2008, Tallahassee, FL, USA

Submitted by Lianqing Zheng on

FYI. If you have any questions, please contact the organizer directly (see link below). 

http://www.mmm2008.org/bin/view.pl/Main/WebHome

The Fourth International Conference on Multiscale Materials Modeling

October 27-31, 2008, Tallahassee, FL, USA

Symposium 1: Mathematical issues in multiscale materials modeling

Postdoctoral Appointee – Computational Plasticity

Submitted by James Foulk on

A postdoctoral position at Sandia National Labs in Livermore, CA is available for an applied mechanics engineer with a strong background in computational constitutive model development. The work will support our current projects in the areas of continuum plasticity and failure modeling. The applicant will also be expected to implement models into Sandia computer codes for high-performance computing simulations. In addition, the candidate will collaborate with structural analysts to apply these advanced models to Sandia applications.

Watch the metallic glass "flowing" at room temperature

Submitted by zwshan on

Metallic glass in bulk form is known to have superb strength and elastic response but very limited plastic deformation ability. Through machining the metaillinc glass into submicometer pillars, experiment found that metallic glass can actually sustain very large plastic doformation (see attached Figure).  The detail of this finding can be found in our most recent publication: Z. W. Shan et al, Plastic flow and failure resistance of metallic glass: Insight from in situ compression of nanopillars, Phys. Rev.