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Postdoctoral and Graduate Assistant Positions immediately available in Penn State University

Submitted by liqun on

Postdoctoral and Graduate Assistant Positions are

immediately available to work on phase-field simulations of phase

transformations and microstructure evolution in metallic alloys or

oxides. Strong background in mechanics and thermodynamics of of solid

microstructures is a plus. If interested, please email a resume to

Professor Long-Qing Chen, Penn State University at lqc3 [at] psu.edu

Several questions for VUMAT

Submitted by meshfreer on

Hi all, I am a new ABAQUS VUMAT user. I am defining the material behavior in stamping of sheet metal through VUMAT. But there are several questions about VUMAT.



(1)accoring to the ABAQUS user manual,for plane stress problem,stressnew(nblock,ndir+nshr), where ndir=3,nshr=1, but in fact,there are 5 stress commponents: sigma_{11},sigma_{22},sigma_{12},sigma_{23},sigma_{31}.

how to match stressnew(*,i)(i=1,2,3,4) with the stress commponents: sigma_{11},sigma_{22},sigma_{12},sigma_{23},sigma_{31}?

Wave-Structure-Foundation interaction (Fluid-Str-Porous Media int.)

Submitted by Anonymous (not verified) on

Dear all,

can anyone direct me to litrature in which modelling the diffusion equation of fluid porous flow is unified with the free fluid flow. I mean that the porous media is considered deformable and equilibrium conditions are solved simultanouesly with diffusion eq. for porous flow and at the same time fluid velocities inside and outside porous media are linked together in a poroelastoplatic framework; where porosity and geometry are updated with each time step!

Thank you in advance!

Hisham El Safti