research
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Design of robust superhydraphobic surfaces, Dehui Wang, Zuankai Wang, Robin H.A. Ras, Xu Deng, et al., Nature, 2020
Superhydrophobic surfaces have promising applications in various medical and engineering applications; however, these surfaces, either via physical and/or chemical methods, suffer from one major flaw- extremely vulnerable to mechanical damage, so lose superhydrophobicity easily in practice.
How to include temperature effects on the shear rates in Dr. Huang's crystal plasticity code
I am using Dr. Huang's crystal plasticity code for an adiabatic process where temperature increase due to deformation need to be calculated. Dr. Huang's CP UMAT code does not consider the temperature effect of shear rate or hardening. Is there a way to include temperature effects in the current UMAT code?
http://www.columbia.edu/~jk2079/Kysar_Research_Laboratory/Single_Crysta…
Thermal wrinkling of liquid crystal polymer shell/core spheres
Smart soft materials that can flexibly respond to external multi-physics stimuli, have shown intriguing applications in shape-morphing and morphology control. Here, we present tunable wrinkling patterns in core-shell spheres under thermal load via controlling the orientation of director in nematic liquid crystal polymer (LCP). To analyze nonlinear instability and morphological evolution of LCP shell/core spheres, we develop a shallow core-shell model that accounts for director-induced anisotropic spontaneous strains.
3D Printed Silicone Polymer : Thermo-viscoelastic experimental characterization and computational modelling
A comprehensive thermo-mechanical experimental study and subsequent constitutive modelling will facilitate in designing and simulating more complex cellular metamaterials using 3D printed silicones
USACM Virtual Seminar by Pania Newell, University of Utah
The USACM is happy to announce a virtual seminar this week on Wednesday, July 1st at 3pm Eastern. The title of the seminar is "Examining Fracture Behavior in Heterogeneous Poro-Elastic Media from Nano to Macro-Scale". An abstract of the talk is available here:
https://unsacm.memberclicks.net/assets/docs/Newell_2020.07.01_2pm.pdf
We have a number of seats available to anyone interested. We just ask attendees to register at this page:
Extreme Mechanics Letters receives its 2019 Impact Factor: 4.806
Based on the newly released 2019 Journal Citation Report, Extreme Mechanics Letters received an impact factor of 4.806, in line with its 2019 CiteScore, exemplifying the steadily increasing impact of the journal and its top r
Journal Club for July 2020: Fatigue-resistant hydrogels: Principles, Experiments, and Applications
Fatigue-resistant hydrogels: Principles, Experiments, and Applications
Shaoting Lin, Xuanhe Zhao
1. Introduction
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Layered nanocomposites by shear-flow-induced alignment of nanosheets, Chuangqi Zhao, Lei Jiang, Mingjie Liu, Nature, 2020
Novelty/impact/significance:
A generalizable and scalable, continuous fabrication of ultrastrong composite films (with nanosheets of graphene oxide and clay, strength 1215 MPa modulus 198.8 GPa,, and ultrastrong and ultratough composites (with nanosheets of clay, toughness 36.7 MJ/m2 strength 1195 MPa) based on a superspreading layering strategy.
Scientific question:
Variable kinematics continuum finite element
Willing to share the work done in my Ph.D. thesis ("An efficient numerical framework for capturing localised 3D stress fields in laminated composites). The basic code (written in FORTRAN 90) is available on GITHUB (Check the following link).