research
Curvature tunes wrinkling in shells
Transverse wrinkles usually emerge in a uniaxially stretched elastic film and can be suppressed upon further tension, which is an instability-restabilization behavior due to the nonlinear competition between stretching energy and bending energy. Here, we show that curvature can effectively and precisely tune the wrinkling localization and amplitude.
LAMMPS tutorials on the simulations of shock wave propagation and ballistic impact
We are currently investigating the shock response of materials using molecular dynamics (MD). This project showed us that the preparation of properly equilibrated MD models can be very challenging even for someone with a strong background in molecular modeling. Therefore, we thought of sharing some of our recent MD models with the research community. We would like to share the LAMMPS input and data files required to run MD simulation of shock wave propagation and ballistic impacts. The two MD models are shown above.
Multi-physics modeling and finite element formulation of corneal UV cross-linking
The UV cross-linking technique applied to the cornea is a popular and effective therapy for eye diseases such as keratoconus and ectatic disorders. The treatment strengthens the cornea by forming new cross-links via photochemical reactions and, in turn, prevents the disease from further developing.
MD simulations of shock propagation and spallation in polymers
Our article on MD simulations of shock propagation and spallation in polymers has been published in the Journal of Applied Mechanics.
Exploring diamondlike lattice thermal conductivity crystals via feature-based transfer learning
Published in Physical Review Materials: https://journals.aps.org/prmaterials/abstract/10.1103/PhysRevMaterials.5.053801
Fault Diagnosis of an Automobile Cylinder Block with Neural Process of Modal Information
Fault Diagnosis of an Automobile Cylinder Block with Neural Process of Modal Information
Online link to paper:
http://ijens.org/Vol_21_I_02/210102-4848-IJMME-IJENS.pdf
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Rapid synchronized fabrication of vascularized thermosets and composites
Dear colleagues,
We are happy to share a recent collaborative study on experimental and numerical investigation of rapid synchronized fabrication of vascularized thermosets and composites. This study demonstrated that a thermoset polymer or polymer composites with embedded microvascular systems can be fabricated in a single step, using a self-propagating polymerization reaction front. For more details, please see: https://www.nature.com/articles/s41467-021-23054-7
Nanotwin-induced strengthening in silicon: A molecular dynamics study
Mechanical performance of silicon nanopillars with homogeneous and gradient nanotwinned structures are investigated through a series of molecular dynamics simulations. The most observed Σ3 twin boundary (TB) with two preferable (lowest surface energy) planes of {111} and {001} are used to generate homogeneous and gradient nanotwinned structures. Simulations of compression and tension of nanotwinned pillars reveal an extra strengthening behavior due to the addition of Σ3 TBs when compared to the single crystalline nanopillar without any TBs.
Keep EML Webinar going!
Keep EML Webinar going by donating at:
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We gratefully acknowledge the financial support for Season 2 of EML Webinar by (as of 18 May 2021):
Denian Zhuang, Jimmy Hsia, Zhigang Suo, Ruobing Bai, Teng Li, Liqing Jiao, Shengqiang Cai, Grace Gu, Xin Wen, Jianyu Li, Jin Yang, Nitesh Arora, and anonymous donors.
Dear friends of EML Webinar,