Blog posts

How to define RHS in UEL for a static analysis?

Submitted by ashkan khalili on Thu, 09/03/2015 - 17:06

Hi every one!

I'm working on developing a shell element to be implemented in ABAQUS through UEL.

It's going through a static analysis. and as you may know for static analysis, ABAQUS just needs AMATRX and RHS to be defined via UEL. It must be mentioned that the stiffness matrix is changing at each time increment. The force that has been applied, is a concentrated force and a function of time.

I've defined the RHS as:

RHS=-[K]*{U}

where [K] is the stiffness (AMATRX) matrix and {u} is the displacement vector at each time increment.

Modelling and Simulation of Additive Manufacturing Processes (EUROMECH Colloquium 587)

Submitted by Robertt Valente on Thu, 09/03/2015 - 14:47

Modelling and Simulation of Additive Manufacturing Processes (EUROMECH Colloquium 587)

9-11 May, 2016, University of Aveiro, Portugal (pre-announcement)

Aims and Scope

Postdoctoral Research Position in Computational Inverse Problems and Optimization at Duke University

Submitted by waquino on Wed, 09/02/2015 - 19:47

job

inverse problems

Optimization

This position is now closed.

Faculty Positions at Duke University

Submitted by John E. Dolbow on Wed, 09/02/2015 - 15:04

job

Faculty Position

applied mechanics

The Department of Civil and Environmental Engineering and the Pratt School of Engineering at Duke University invite applicants for a tenure-track faculty position in one or more of the areas of: (1) optimization, design, control, and decision making under uncertainty; (2) coupled-field problems in geo-mechanics with application to energy production, energy storage, hazardous waste storage/disposal, and environmental protection; (3) new or emerging materials with application to renewable energy; and (4) computational science and engineering with impact on societally-relevant problems and the

Strain gradient plasticity: energetic or dissipative?---Published in Acta Mechanica Sinica, Vol.31, No. 4, Aug. 2015.

Submitted by Acta Mechanica… on Wed, 09/02/2015 - 06:54

Journal Tittle: Acta Mechanica Sinica

Article Tittle: Strain gradient plasticity: energetic or dissipative?

Authors: N. A. Fleck, J. R. Willis

Multi-scale modeling of hemodynamics in the cardiovascular system---Published in Acta Mechanica Sinica, Vol.31, No. 4, Aug. 2015.

Submitted by Acta Mechanica… on Wed, 09/02/2015 - 06:13

Journal Tittle: Acta Mechanica Sinica

Article Tittle: Multi-scale modeling of hemodynamics in the cardiovascular system

Authors: Hao Liu, Fuyou Liang, Jasmin Wong, Takashi Fujiwara, Wenjing Ye, Ken-iti Tsubota, Michiko Sugawara

Molecular tagging techniques and their applications to the study of complex thermal flow phenomena---Published in Acta Mechanica Sinica, Vol.31, No. 4, Aug. 2015.

Submitted by Acta Mechanica… on Wed, 09/02/2015 - 03:53

Journal Tittle: Acta Mechanica Sinica

Article Tittle: Molecular tagging techniques and their applications to the study of complex thermal flow phenomena

Authors: Fang Chen, Haixing Li, Hui Hu

Predicting fracture energies and crack-tip fields of soft tough materials

Submitted by Teng zhang on Wed, 09/02/2015 - 01:09

Soft materials including elastomers and gels are pervasive in biological systems and technological applications. Whereas it is known that intrinsic fracture energies of soft materials are relatively low, how the intrinsic fracture energy cooperates with mechanical dissipation in process zone to give high fracture toughness of soft materials is not well understood. In addition, it is still challenging to predict fracture energies and crack-tip strain fields of soft tough materials.

ABAQUS 6.14 FSI Engine Mapping Search Failure

Submitted by TU_61 on Tue, 09/01/2015 - 12:29

fsi

Abaqus error

I am doing a Co-Simulation in ABAQUS 6.14, where a fluid (water) flows through a Solid Steel. In my first trials, I used a Solid with one consistent hole, and a fluid. Everything worked perfect.
In my second trial the solid is wider and with two holes, so the fluid flows in one hole in and comes out at the other hole.