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arash_yavari's picture

Nonlinear Mechanics of Thermoelastic Accretion

In this paper, we formulate a theory for the coupling of accretion mechanics and thermoelasticity. We present an analytical formulation of the thermoelastic accretion of an infinite cylinder and of a two-dimensional block.

G. A. Holzapfel's picture

PhD Position in Biomechanics, Graz University of Technology, Austria

PhD-Position in Biomechanics 

within the Lead project

Mechanics, Modeling and Simulation of Aortic Dissection

at the Institute of Applied Mechanics
Graz University of Technology, Austria

chaofenglu's picture

Modified multiplicative decomposition model for growth: Beyond the initial stress-free state

The multiplicative decomposition model is widely employed for predicting residual stresses and morphologies of biological tissues due to growth. However, it relies on the assumption that the tissue is initially in a stress-free state, which conflicts with the observations that any growth state of a biological tissue is under a significant level of residual stresses that helps to maintain its ideal mechanical conditions.

crack propagation in Abaqus (VCCT) with remeshing

I started using VCCT with quarter tip elements in Abaqus (not XFEM). I can solve the problem and get the SIFs.
How can I let the crack grow? Has someone a script for crack growth and remeshing that I can implement?

Douglas P Holmes's picture

Geometry and mechanics of thin growing bilayers

Matteo Pezzulla, Gabriel P. Smith, Paola Nardinocchi, and Douglas P. Holmes, Soft Matter, 12, 4435-4442, (2016).

 

grytz's picture

Postdoc Position in Computational Modeling of Growth and Remodeling Mechanisms

A postdoctoral fellowship position is available at the laboratory of Rafael Grytz, PhD, at the University of Alabama at Birmingham, for 2 years, starting immediately. The candidate will be instrumental in developing computational methods to quantify and simulate growth and remodeling mechanisms in ocular conditions and diseases.

Non-linear multiphysics modeling of ionic gels

The paper presents a thermodynamically consistent modeling of the non-linear multiphysics of ionic polymer gels based on the multiplicative decomposition of the deformation gradient. In particular, the deformations induced by the motion of ions under an applied voltage are viewed as distortions, similarly to growth-induced deformations in soft tissues. Furthermore, a consistent linearization of the model in the regime of small deformations is discussed. Finally, a finite element implementation of the theory is introduced and validated against experimental results.

Isaac.Chenchiah's picture

Preprint on the multiplicative decomposition used in models of biological growth

Announcing a preprint available at <http://arxiv.org/abs/1210.7174>:

An Energy-Deformation Decomposition for Morphoelasticity

Isaac Vikram Chenchiah, Patrick D. Shipman

azadpoor's picture

Call for special issue papers: Mechanics of cells, tissues, and biomaterials

The paramount role of mechanics in life has recently been the center of attention of many researchers. This special issue will be focusing on the role of mechanics in the life of cells and tissues and their interactions with biomaterials. Original research and review papers are solicited for review and publication in the journal Mechanical Sciences . Mechanical Sciences is an academic open-access journal sponsored by the Library of Delft University of Technology and The Netherlands Organization for Scientific Research (NWO).

lncool's picture

Journal Club Theme of January 2012: Mechanics of Growth

"I can't understand how people are still working on growth. That stuff's all done." This was the beginning of the first lunch conversation at a recent Banff workshop on Mathematical Foundations on Mechanical Biology... somewhat frustrating for someone who is excited about growth. Fortunately, most of the presentations and discussions still focused on growth. Although "that stuff's all done".

Jianliang Xiao's picture

van der Waals interaction controls orientations of single-walled carbon nanotubes on quartz during growth

Single-walled carbon nanotubes (SWNTs) possess extraordinary electrical and mechanical properties, with many possible applications in electronics and materials science. Dense, horizonally aligned arrays of linearly configured SWNTs represent perhaps the most attractive and scalable way to implement this class of nanomaterial in practical systems. Recent work shows that templated growth of tubes on certain crystalline substrates (e.g. quartz) yields arrays with the necessary levels of perfection, as demonstrated by the formation of devices and full systems on quartz.

crack propagation in ansys

hello all,

i have a problem with ansys, how can i simulate the crack propagation using ansys.

please help me

 

Watching seeds germinate

Choose a channel featured in the header of iMechanica: 

Hi,

I have been watching some small seeds germinate on different media.

The root pops out first, from a split in one end of the seed, navigates down to the substrate, then inserts itself into the substrate if it can (e.g. when placed on sand or soil). Otherwise it grows along the surface horizontally (on filter paper). The vertical growing plant also puts out a horizontal set of very fine root hairs, at the ground surface, and then stands up, lifting the seed into the air with the first leaves still stuck inside the seed.

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