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I^,m master student and  My project is simulate welding process with two-dimensionaol goldak model. I dont know what to do please help me.

mr.nezamdost [at] gmail.com

Hi,

I'm stucking with my subroutine. May ask anybody to have a look the the file. 

I run a simple model that and try to run it,but an error message was appeared as below;   ***ERROR: USER SUBROUTINE UEL MISSING

I don't know what is the problem. I did locate the input (.inp) and user (.f) in the same folder and run it (abaqus job=.... user= ...ff int )

Hope to get help from anybody...

Aida

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

I am looking for a postdoctoral position. I have expeience in finite element modeling and laboratory measurements of ultrasonic waves in ferroelectric and piezoelectric plates, piezoelectric transducers and actuators, MEMs. Also worked in the field of computational electromagnetics. Please look at the attached resume.

Hello everyone,

I am curretly working on predicting the failure in thin loaded plates. The plates are impacted by a hemispherical rigid cylinders at a low speed (4.53 m/s <--> Free fall from 1.05 meter) and are perforated experimentally at their center.

I tried to simulate failure with ls-dyna on a shell based model ( the sheet is very thin : 1 mm thickness Vs  130 x 130 mm ), but it seems that the failure strain measured on the tensile tests is underestimated ( the curves after the begining if necking are false).

You check my reverse engineering studies and scripts in www.mekanik.net.