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Doing Topology Optimization Explicitly and Geometrically - A New Moving Morphable Components Based Framework

Submitted by Xu Guo on
research
Topology optimization

    Structural topology optimization, which aims at placing available material within a prescribed design domain appropriately in order to achieve optimized structural performances, has received considerable research attention since the pioneering work of Bendsoe and Kikuchi. Many approaches have been proposed for structural topology optimization and it now has been extended to a wide range of physical disciplines such as acoustics, electromagnetics and optics.

Open PhD position in soft tissue modeling at Norwegian University of Science and Technology (NTNU)

Submitted by Bjorn Skallerud on
job
computational mechanics
experimental biomechanics

The project addresses tissue modeling for the pharynx region and is a part of a larger project addressing the obstructive sleep apnea syndrome (mechanical, fsi, medical angles). See www.jobbnorge.no/ledige-stillinger/stilling/101325/phd-positions-in-sof… for further info. Deadline is 15 May.Expected start-up is summer 2014.

Computational Mechanics PhD with applications to Surgical Simulation

Submitted by Stephane Bordas on
research
computational mechanics
meshfree
xfem
phd
surgical simulation
robotics
Control
surgical robotics

PhD studentship available http://icube-avr.unistra.fr/fr/index.php/Sujets_de_th%C3%A8ses#Simulatio... http://icube-avr.unistra.fr/en/index.php/Open_Positions#PhD_Thesis_in_me...





 

Please contact Hadrien or myself for more details. Related recent publications:

From dislocation motion to an additive velocity gradient decomposition, and some simple models of dislocation dynamics

Submitted by Amit Acharya on
research
Plasticity
dislocation dynamics
partial differential equations

Amit Acharya         Xiaohan Zhang

(Chinese Annals of Mathematics, 36(B), 2015, 645-658.  Proceedings of the International Conference on Nonlinear and Multiscale Partial Di fferential Equations: Theory, Numerics and Applications held at Fudan University, Shanghai, September 16-20, 2013, in honor of Luc Tartar.)

Non-Metricity and the Nonlinear Mechanics of Distributed Point Defects

Submitted by arash_yavari on
research
differential geometry
Geometric mechanics
Point defects
mechanics of defects

We discuss the relevance of non-metricity in a metric-affine manifold (a manifold equipped with a connection and a metric) and the nonlinear mechanics of distributed point defects. We describe a geometric framework in which one can calculate analytically the residual stress field of nonlinear elastic solids with distributed point defects. In particular, we use Cartan's machinery of moving frames and construct the material manifold of a finite ball with a spherically-symmetric distribution of point defects.

An Alternative to IGA: Level Set based Finite Element Analysis Directly from CAD: Finite Elements on Implicit Domains

Submitted by Stephane Bordas on
research
extended finite element method
Isogeometric Analysis
Level set method
IGA
CAD-analysis
Curved boundary and sharp edges
Dirichlet
Implicit boundary representation
Boundary representations
Curved boundary

http://orbilu.uni.lu/handle/10993/12915 http://orbilu.uni.lu/bitstream/10993/12915/1/2011implicitDomainFEM_CMAM…

Equivalent strain in large torsional deformation

Submitted by AAGP on
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torsion
finite deformations
equivalent strain
shear strain

Dear All

Looking for a methodology to convert shear stress-shear strain data from a torsion test in large deformations into true strain-true stress curve, I found two schools of thought: 

 

and

 

I found also in recent papers a strong debate on which should be the correct method. For example:

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