research

The mission of the ASME Aerospace Structures, Structural Dynamics, and Materials (SSDM) Conference is to convene and serve the global aerospace structures, structural dynamics, and materials communities, continuing the legacy left behind by the AIAA/ASME/ASCE/AHS/ASC SDM conference. Currently, we are accepting Presentation-only Abstracts (deadline: Feb. 13). The inaugural conference will be held in San Diego (June 19-21 2023). More details can be found at https://event.asme.org/SSDM.

We developed a method enabling a single material system to transform with untethered, reversible, low-powered reprogrammable deformations and shape locking via the application of magneto-thermomechanically triggered prestress on the Shape Memory Polymers (SMPs) and structural instability with asymmetric magnetic torque. The mutual assistance of two physics concepts—magnetic control combined with the thermomechanical behavior of SMPs is demonstrated, without requiring new materials synthesis and high-power energy for reprogramming.

Here is a recent paper of our lab focusing on the physico-chemical origin of the thermoreversible properties of an organohydrogel made of polysaccharides. #greenchemistry

Dear members of iMechanica, We are very pleased to announce the good health of the first overlay journal in Solid Mechanics, the so-called "Journal of Theoretical, Computational and Applied Mechanics" Journal of Theoretical, Computational and Applied Mechanics" which is a scholarly journal, provided on a Fair Open Access basis, without cost to both readers and authors. The Journal aims to select publications of the highest scientific caliber in the form of either original research or review in Solid Mechanics.

The new model of truss element is based on the same stress-strain curves of tension, compression, and shear with the hexahedron element under the equivalent external force. Comparing and analyzing a simply supported elastoplastic concrete beam with initial cracks by using the new element method and the finite element method, it can be found that the load-displacement curve, the load-crack opening displacement curve, the contour of the displacement under the various loads, and the distribution of the horizontal normal stress under the maximum load are all in good agreement.

For the plane stress problem and the spatial problem of the elasto-plastic analysis of concrete, a new truss element model is presented by using the deformations under the equivalent external forces are the same. Some examples is given, which is in good agreement with the calculation results of the solid element.

(Note: The model in this article is the world's top concrete model, much better than the concrete model provided by Ansys itself.)

  Open Access link: https://doi.org/10.1016/j.matdes.2022.111398

Dear iMechanicians,

Intercalation Hosts for Multivalent-Ion Batteries

Wiley Small Structures [Link]

The transition between necking-mediated tensile failure of glasses, at elevated temperatures

and/or low strain-rates, and shear-banding-mediated tensile failure, at low temperatures and/or

high strain-rates, is investigated using tensile experiments on metallic glasses and atomistic simula-

tions. We experimentally and simulationally show that this transition occurs through a sequence of

macroscopic failure patterns, parametrized by the ultimate tensile strength. Quantitatively analyz-