Tuning of a piezoelectric vibration absorber attached to a damped structure
Tuning of a piezoelectric vibration absorber attached to a damped structure
By : Payam Soltani, Gaetan Kerschen, Gilles Tondreau, Arnaud Deraemaeker
Abstract:
Blog posts
Defining perioidc BC for 1 element elastic model for Biaxial pull in ABAQUS
For simplicity in understanding Perioidic BC in ABAQUS, I am trying to implement in a single element elastic model.
Material is elastic. There are two reference points defined Refpoint 1 for x-direction pull and Refpoint 2 for y-direction pull. Please find the attached picture for clarity in the model.
I have defined the equations for PBC in ABAQUS as below:
x1-x2+Refpoint1=0
y1-y2+Refpoint1=0
x3-x4+Refpoint1=0
y3-y4+Refpoint1=0
x2-x3+Refpoint2=0
y2-y3+Refpoint2=0
Recipients of 2016 Extreme Mechanics Letters (EML) Young Investigator Award
I am pleased to announce that Prof. Robert Shepherd from Cornell University and Prof. Kejie Zhao from Purdue University have been voted by the award committee as the recipients of the 2016 EML Young Investigator Award.
Elastic Microplane Formulation for Transversely Isotropic Materials
Our recent work investigates the extension of the microplane formulation to the description of transversely isotropic materials such as shale rock, foams, unidirectional composites, and ceramics. Two possible approaches are considered: 1) the spectral decomposition of the stiffness tensor to define the microplane constitutive laws in terms of energetically orthogonal eigenstrains and eigenstresses; and 2) the definition of orientation-dependent microplane elastic moduli.
Microstructure modeling of random composites with cylindrical inclusions having high volume fraction and broad aspect ratio distribution
We proposed a computational methodology for generating microstructure models of random composites with cylindrical or sphero-cylindrical inclusions having high volume fraction and broad aspect ratio distribution. The proposed methodology couples the random sequential adsorption (RSA) algorithm and dynamic finite element (FE) simulations. It uses RSA to generate sparse inclusion assemblies of low volume fraction and subsequently utilizes dynamic FE simulation for inclusion packing to achieve high volume fractions.
5-Year Career Development Fellowship at Oxford
5-Year Career Development Fellowship (CDF) at Balliol College in the University of Oxford. Closes: 12th October 2016. Details below:
http://www.jobs.ac.uk/job/AOP191/career-development-fellowship-in-engin…
Doctorate of Engineering (DE) student positions is available for Spring/Summer 2017
A Doctorate of Engineering (DE) student position is available for Spring/Summer 2017 in Mechanical Engineering. The applicants are required to be specialized in solid mechanics and be well-familier with finite element methods. The positions involves multi-scale modeling of friction at high temperature and are directed by Multiscale Contact Mechanics and Tribology Laboratory at Lamar University, Beaumont, TX, USA.
2 Ph.D Positions in TU Darmstadt (Germany)
Ph.D Position 1: viscoelastic and electromechanical behavior of porous ferroelectrets
At the Division of Mechanics of Functional Materials in the institute of Materials Science, TU Darmstadt a Ph.D position is to be filled as soon as possible. The position is scheduled for three years.
Tasks and Opportunities
Postdoctoral Researcher: Mechanical Modeling of Composite Structures at National Renewable Energy Laboratory
Postdoctoral Researcher: Mechanical Modeling of Composite Structures
Location: CO - Golden
Position Type: Postdoc (Fixed Term)
Hours Per Week: 40
Job Summary
ABAQUS: DAMAGE FOR DUCTILE METALS
Hi everyone,
What values should be used for the four items below for steel material fracture in ABAQUS:
1) Fracture Strain ?
2) Stress Triaxiality
3) Strain Rate
4) Displacement at Failure
Thanks