research

Due to the inherent viscoelasticity of constituent matrix and the possibility of long-term storage, space deployable structures made of composites are likely to exhibit relaxation in the stored strain energy, which may degrade their deployment performance. This paper presents a bottom-up finite element based multiscale computational strategy that bridges the experimentally measurable properties of constituent fibers and matrix to numerical predictions of viscoelastic behavior of composite laminates and general shell structures.

To be published on

Civil Engineering Research & Technology

ISSN: 2754-4982

I am happy to share our recent work, that has been published in the Physical Review B journal. I would be happy to share the paper with anyone interested, let me know if you cannot access the paper otherwise.

By Yuzhen Chen, Tianzhen Liu, Lihua Jin*

Dear iMechanicians,

I would like to share our recent work published in Phys. Rev. Fluids on the statics and dynamics of droplets on lubricated surfaces: 

Droplets on lubricated surfaces: The slow dynamics of skirt formation

Zhaohe Dai and Dominic Vella

By Yuzhen Chen, Alexa S. Kuenstler, Ryan C. Hayward*, Lihua Jin*

50 days of the free download link

https://www.sciencedirect.com/science/article/pii/S2352492822005682?dgci...

Permanent link

https://www.sciencedirect.com/science/article/abs/pii/S2352492822005682

We present a study on planar equilibria of a terminally loaded elastic rod wrapped around a rigid circular capstan. Both frictionless and frictional contact between the rod and the capstan are considered. We identify three cases of frictionless contact -- namely where the rod touches the capstan at one point, along a continuous arc, and at two points. We show that, in contrast to a fully flexible filament, an elastic rod of finite length wrapped around a capstan does not require friction to support unequal loads at its two ends.

Dear iMechanicians,

   Drug repurposing for SARS-CoV-2: a high-throughput molecular docking, molecular dynamics, machine learning, and DFT study   

   By J. Kashyap and D. Datta

   Part of special issue on 'Computational Materials Design' in Journal of Materials Science 

The Sound and Vibrations Lab (http://svl.eng.buffalo.edu), directed by Prof. Mostafa Nouh at the University at Buffalo – SUNY, has an opening for a postdoc position in the areas of phononics and elastic metamaterials. The position is supported by an NSF project whose main objective is to investigate the mechanics of space-time-periodic material systems operating within asymmetric, nonreciprocal, non-Hermitian, and/or frequency-selective regimes.

On-Body Mechano-Acoustics

Xiaoyue Ni
Assistant Professor
Department of Mechanical Engineering and Materials Science
Department of Biostatistics and Bioinformatics
Duke University
ni.pratt.duke.edu

1. Introduction

G. Azizi, S. Kavousi, and M. Asle Zaeem. Interactive effects of interfacial energy anisotropy and solute transport on solidification patterns of Al-Cu alloys. Acta Materialia 231 (2022) 117859 (15 pages). 

dear collegues, I may be interested to share your views on an "asperity theory" modified Persson's rubber friction contact mechanics theory which I find not clearly motivated and seems to lead to erroneous conclusions ---- but I am also unable to reproduce the results claimed by the authors. The preprint is here, and the original paper attached: https://www.researchgate.net/publication/359392510

Abstract

Journal: Mathematics and Mechanics of Solids

Dear colleagues,

A Multiresolution Adaptive Wavelet Method for Nonlinear Partial Differential Equations

If you are interested in the full lecture on the Multiresolution Adaptive Wavelet Method, I have given The Journal of Computational Physics lecture as the part of the Cassyni project.  

Thanks to Weingarten’s formulae [1], which date to 1861, the bending deformation of a Kirchhoff-Love shell can be characterized by examining the variation of the unit normal vector to the surface of the shell. 

Universal displacements are those displacements that can be maintained, in the absence of body forces, by applying only boundary tractions  for any material in a given class of materials. Therefore, equilibrium equations must be satisfied for arbitrary elastic moduli for a given anisotropy class. These conditions can be expressed as a set of partial differential equations for the displacement field that we call universality constraints.