Petals and leaves are usually curled and exhibit intriguing morphology evolution upon growth, which contributes to their important biological functions. To understand the underlying morphoelastic mechanism and to determine the crucial factors that govern the growth-induced instability patterning in curved petals and leaves, we develop an active thin shell model that can describe variable curvatures and spontaneous growth, within the framework of general differential geometry based on curvilinear coordinates and hyperelastic deformation theory.

The physical properties of graphene nanoribbons (GNRs) are closely related to their morphology; meanwhile GNRs can easily slide on surfaces (e.g., superlubricity), which may largely affect the configuration and hence the properties. However, the morphological evolution of GNRs during sliding remain elusive. We explore the intriguing tail swing behavior of GNRs under various sliding configurations on Au substrate. Two distinct modes of tail swing emerge, characterized by regular and irregular swings, depending on the GNR width and initial position relative to the substrate.

This paper is dedicated to Professor Nasr Ghoniem on the occasion of his retirement.

(To appear in Journal of Materials Science: Materials Theory)

Abstract

A continuum mechanical model of coupled dislocation based plasticity and fracture at finite deformation is proposed. Motivating questions and target applications of the model are sketched.

We have two openings for PhD studies at University of Massachusetts, Lowell, Department of Mechanical and Industrial Engineering.

Are you passionate about advancing our understanding of blast-related brain injury and its underlying mechanisms? Join our dynamic research team and contribute to groundbreaking discoveries in this critical field.

Research Focus:

We are seeking motivated candidates to explore the complex mechanisms underlying blastrelated brain injuries.

Dear colleagues, 

The  2024 Society of Engineering Science Technical Meeting to be held at WestLake University, HangZhou, China, August 20-23. On behalf of my colleagues below, I invite you to consider submitting an abstract to the MS 10.4 Mechanics of Materials in Extreme Environments. Below is a description of this MS. 

Description:

Journal Club for March 2024: 

Unveiling Spatiotemporal Deformation and Dynamics of Soft Materials at Extremely High Rates through Laser-Induced Inertial Cavitation

Jin Yang*

Department of Aerospace Engineering and Engineering Mechanics,

The University of Texas at Austin

*Corresponding author. Email address: jin.yang [at] austin.utexas.edu

Dear Mechanics Colleagues, Peers, Principal Investigators, and Community Members,

Here is a tremendous opportunity to positively impact the field of mechanics for years to come in the USA. The Division of Civil, Mechanical and Manufacturing Innovation (CMMI) in the Directorate for Engineering at the US National Science Foundation (NSF) seeks to fill a Program Director position in the Mechanics and Engineering Materials (MEM) Cluster.

I am deeply saddened by the passing of Andre Pineau in Paris yesterday. I happened to be one of ~100 PhD students he graduated over the course of his career.