Journal Club September 2024: Understanding Tunable Dry Adhesion Mechanics for Robotic Manipulation
Wanliang Shan
Associate Professor of Mechanical and Aerospace Engineering
Syracuse University
Introduction
research
Multiscale computational modeling techniques in study and design of 2D materials: recent advances, challenges, and opportunities
I am pleased to share our latest open-access article, just published in #2DMaterials.
Call for nominations of Extreme Mechanics Letters Young Investigator Award 2024
The Extreme Mechanics Letters (EML) Young Investigator Award (YIA) 2024 edition is organized by the journal and Elsevier to honor the best paper by a young scientist. The papers must have been published in volumes 63-69, from 2023 to 2024.
The award is made annually to the corresponding authors of the paper who received their Ph.D. no more than 10 years prior to the year of award. Corresponding authors who have yet to receive a Ph.D. will also be considered and self-nominations are allowed.
Bulk and fracture process zone contribution to the rate-dependent adhesion amplification in viscoelastic broad-band materials
The contact between a rigid Hertzian indenter and an adhesive broad-band viscoelastic substrate is considered. The material behavior is described by a modified power law model, which is characterized by only four parameters, the glassy and rubbery elastic moduli, a characteristic exponent n and a timescale tau0.
Rigidity theory meets homogenization: How periodic surfaces bend
In differential geometry, rigidity theory investigates whether a surface can deform by pure bending without stretching. The central problem is to find or disprove the existence of isometric deformations.
Classical examples in the "discrete" category include:
- The finite rigidity of convex polyhedra by Cauchy
- The infinitesimal rigidity of convex polyhedra by Dehn
- The existence of flexible (non-convex) polyhedra by Connelly
In the "smooth" category, we have:
Classical variational phase-field models cannot predict fracture nucleation
by Oscar Lopez-Pamies, John E. Dolbow, Gilles A. Francfort, and Chris J. Larsen
Abstract
Molecular dynamics study of axial tensile response of crystalline UHMWPE under different loading conditions
Our latest paper is accessible freely for 50 days from this link: https://authors.elsevier.com/a/1jiSx7NHxQiuj
Lagrangian approach to origami vertex analysis
Dear colleagues,
We invite you to see the preprint of our new paper Lagrangian approach to origami vertex analysis: Kinematics that will appear in Philosophical Transactions of the Royal Society A. Here we show how the Lagrangian approach to origami facilitates the exploitation of symmetry, formulate reduced order compatibility conditions for some symmetric foldings, and obtain analytical expressions for the kinematics of some degree 6 and degree 8 origami vertices.
Quenched disorder and instability control dynamic fracture in three dimensions
In this work, we show that the combination of material quenched disorder (of finite strength/amplitude and correlation length) and a 2D tip-splitting instability (that gives rise to extra fracture surfaces) is at the heart of the spatiotemporal dynamics of cracks in 3D. Specifically, it is shown to account for the widely observed limiting (terminal) velocity of cracks, mirror-mist-hackle sequence of morphological transitions, crack macro-branching and a 3D-to-2D transition, out-of-plane crack front waves and the properties of micro-branches.