V. Slesarenko and S. Rudykh, Towards mechanical characterization of soft digital materials for multimaterial 3D-printing. Int. J. Eng. Science, 123, 62–72 (2018)
Dear Colleagues,
We would like to invite you to submit an abstract to our symposium titled “362 Failure and Damage in Soft Materials: From Instabilies to Cracking” as part of the 18th U.S. National Congress for Theoretical and Applied Mechanics (Northwestern University in Chicago, IL, June 4-9, 2018).
The deadline for abstract submission is November 10, 2017.
Dear Colleagues,
The Soft Materials Mechanics Technical Committee (TC) is pleased to announce that the abstract submission process for the 2017 ASME IMECE in Tampa, FL is open. The TC symposium solicits abstracts from many disciplines represented from previous years (active materials, gels, biomaterials, 3D printing, and more) as well new subject areas and collaborations.
Dear Colleagues,
We invite you to submit an abstract to "Mechanics of Polymers with Dynamic Bonds" (Symposium C-3) at the Society for Engineering Science annual conference this fall. SES will take place Oct 2-5, 2016 at the University of Maryland. The abstract deadline is June 15th. Further conference details can be found at ses2016.org.
Chiqun Zhang Xiaohan Zhang Amit Acharya Dmitry Golovaty Noel Walkington
Nonsingular disclination dynamics in a uniaxial nematic liquid crystal is modeled within a mathematical framework where the kinematics is a direct extension of the classical way of identifying these line defects with singularities of a unit vector field representing the nematic director. It is well known that the universally accepted Oseen-Frank energy is infinite for configurations that contain disclination line defects. We devise a natural augmentation of the Oseen-Frank energy to account for physical situations where, under certain conditions, infinite director gradients have zero associated energy cost, as would be necessary for modeling half-integer strength disclinations within the framework of the director theory. Equilibria and dynamics (in the absence of flow) of line defects are studied within the proposed model. Using appropriate initial/boundary data, the gradient-flow dynamics of this energy leads to non-singular, line defect equilibrium solutions, including those of half-integer strength. However, we demonstrate that the gradient flow dynamics for this energy is not able to adequately describe defect evolution. Motivated by similarity with dislocation dynamics in solids, a novel 2D-model of disclination dynamics in nematics is proposed. The model is based on the extended Oseen-Frank energy and takes into account thermodynamics and the kinematics of conservation of defect topological charge. We validate this model through computations of disclination equilibria, annihilation, repulsion, and splitting. We show that the energy function we devise, suitably interpreted, can serve as well for the modeling of equilibria and dynamics of dislocation line defects in solids making the conclusions of this paper relevant to mechanics of both solids and liquid crystals.
We would like to invite you to submit an abstract to the session on 3D Printed Soft Materials at the ASME 2016 IMECE to be held from November 11 to November 17, 2016 in Phoenix, AZ.
Additive manufacturing, also known as 3D printing, offers unique opportunities to explore novel properties and mechanics of soft materials. This session calls papers from research efforts related to soft materials with novel properties realized or created using 3D printing techniques. Specific topics of interest include, but not limited to:
no longer available.
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A 15 months post Doctoral position is avalaible on mechanical and numerical modeling fields. This is a join project between Univ. Paris 7 & Paris 13.
The present postdoc subject is focussed on situations in which a wetting or dewetting front is interacting with a soft, more or less deformable material.
More details in the enclosed pdf description file.
Two solids can adhere to each other in the presence of a liquid bridge between them, which is called wet adhesion. When the solid is soft, the liquid bridge can cause deformation in the material, and in turn, the deformation may have dramatic effects on the wet adhesion. To investigate the effect, in this article, we calculate the deformation in two soft layers with different separations and connected by a liquid bridge. We illustrate the effect of deformation in the soft layers on the adhesive force.
Research paper.
Title: Ionic Skin
Authors: J.-Y. Sun, C. Keplinger, G.M. Whitesides, Z. Suo
