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What‘s the timing of calling a abaqus user subroutine?

Submitted by liebealt on

Hi all,

 

The question is that is there any document about the timing of calling a user subroutine in ABAUQS? (i.e., UEXTERNALDB being called at the start/end of the analysis or current incerment, UMAT being called at the start of the increment and iteration). I had a document specifying these details for almost every subroutine by attaching them on the flow chart of ABAQUS analysis, but unfortunately I lost it. I wonder if someone happens to have this document or something like this and is willing to share it. Any help would be appreciated.

 

Two PhD positions in Computational Mechanics at Mines ParisTech (CEMEF)

Submitted by daniel.pino_munoz on
job
PHD position
computational mechanics
anisotropic plasticity
adaptive remeshing

The group of Computational Solids Mechanics at CEMEF Mines ParisTech, in the French Riviera, is seeking two candidates for Ph.D. positions. The appointment is starting on October 1st 2018.

The research topics are related to :

- 3D Numerical modelling of Ductile Fracture
- Numerical modelling of sheet-like materials under complex loading paths

Interested applicants can send a resume to

Roll up your sleeves

Submitted by Fan Xu on
research
nonlinear mechanics

When you push up your sleeves, wrinkles form, which eventually evolve into ridges (pictured). As familiar as you may be with this phenomenon, have you ever thought about its underlying mechanism? It involves the complex nonlinear mechanical behaviour of large deformations and surface instabilities, which in turn give rise to a sophisticated morphological evolution. And now, Yifan Yang and co-workers have revealed a hitherto unknown post-buckling behaviour that involves multiple bifurcation transitions (Phys. Rev.

Postdoctoral vacancy (3 years) on high-frequency vibration techniques for non-destructive inspection of 3D printed metal parts

Submitted by wvpaepeg on
vibration
frequency
Modal Analysis
FFT
AM materials
3D printing
NDT
defects

 

The use of 3D printed metal structures is taking a very fast ramp-up in industry. General Electric has demonstrated the possibility of printing titanium fuel injectors for their LEAP engine, EADS has printed a nacelle hinge bracket for the Airbus A320, Boeing is printing plastic inlet ducts for high-altitude aircrafts, hip implants and other prosthetics are exploiting the design freedom of additive manufacturing (AM),...

PhD vacancy (4 years) on fatigue testing of composites with advanced instrumentation

Submitted by wvpaepeg on
job
Composites
Fatigue
UGent
Ghent
Gent
belgium
phd

Composites are used more and more as structural components in aerospace industry, automotive sector, wind energy applications,… As a consequence, the loads on those composite components are much higher than for secondary components, and can lead to fatigue damage in the composite part. Moreover, the fatigue behaviour of fibre-reinforced composites is much more complex than that of metals, because of the many different fibre/polymer combinations, the heterogeneous nature of the composite, the anisotropic behaviour of the composite and the multitude of damage mechanisms.

2 years PostDoctoral Position - Universities Lille & Paris 13 , Paris, France

Submitted by yann.charles on
job
Kinetic Monte Carlo# Finite Element modeling
1 postdoctoral position
transport
trapping

A 2 years post Doctoral position is avalaible in France, on material science numerical modeling fields. This is a join project between Univ. Lille (UMET lab), Paris 13 (LSPM lab), CEA (IRFM lab) and Marseille univ. (PIIM lab).

The present postdoc subject is focused on the modeling of the interactions between impurities (H, He...) and tungsten. 

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