Triangular elements with 2 coincident but untied nodes produce a 1/r variation of stress/strain field.
But the stress/strain field has a 1/√r singularity.
Can you tell me why or recommend me some papers taking about it.
hi
I constructed a head model, which includes muscle, soft tissue, skin and bone. I wrote user material subroutine (umat) for muscle and soft tissue, seperately. I am going to define the muscle and soft tissues properties by using my umats. However, I dont know how to define two user material subroutines (umat) in one model. The subroutines share the same name: subroutine umat(...). If I assign two umats, ABAQUS will be confused, wont know which subroutine to go. Is there anybody who knows how to sort this out?
Many thanks,
ben
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From ESOF, an interesting presentation, attached.
Mars and Venus
How Europeans and Americans
View and Use Science<
Part 1: The European Perspective
Dr Roland Schenkel, Director General, European Commission, Joint Research Centre (JRC)
Some quotes
Dear all,
I am improving the cohesive zone model in 2-D proposed by Y.F. Gao to simulate delamination between sub-micron thick films in 3-D. However, I did not find the potential function proposed by Xu and Needleman in 3-D. If you know it please tell me
Here is the potential function proposed by of Xu and Needleman in 2-D (in Y.F Gao’s paper)
The potential function proposed by Xu and Needleman in 3-D ??????
hi,all
I am glad that i can get much information about P.h.D position here.Now i have been attending my p.h.d in HuNan Universtiy in China for one year,majoring in civil engineering.I am working about bridge engineering and wind resistance.In China,goverment has provides some opportunity to co-cultivate with other international University.It meas that i can go abroad for some time,say one to two years,to study.But first i should get a invitation from them.Who can give me some information about P.h.D position.any reply is appreciated.
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I'm looking for resources for reading and studing concerning the Muskhelishvili's method of estimating the stresses and desplacement fields for singular states of stresses using complex potentials from given boundaries as they mentioned in Timoshenko's book 'theory of elasticity ' pages:203..209.
I tried in my school library and i found nothing.
Thanks in anycase
Ilias I. T.
Hi, can somebody give me a hand on where I can get the detailed explanation of VUEL (like UEL in abaqus manul 25.2.19)?
Many thx here.
MX SHI
