Blog posts
A brief review of modeling of composite structures
This paper provides a brief review on modeling of composite structures. Composite structures in this paper refer to any structure featuring anisotropy and heterogeneity, including but not limited to their traditional meaning of composite laminates made of unidirectional fiber-reinforced composites. Common methods used in modeling of composite structures, including the axiomatic method, the formal asymptotic method, and the variational asymptotic method, are illustrated in deriving the classical lamination theory for the composite laminated plates to see their commonalities and differences.
Research Technician or Postdoctoral Research Associate on animal (chinchilla) studies
Organization: Biomedical Engineering Laboratory / School of AME / University of Oklahoma
Location: Norman, Oklahoma, United States
Date Needed: Available immediately
Primary Category: Research staff member for animal (chinchilla) studies
Type of Position: Full-Time
Salary: To be comparable and determined
Description & Details:
[Submission deadline extended to Jan 29, 2024] Abstract call for Thematic Session 'FS08 - Education in mechanics' - ICTAM2024 (Daegu, South Korea, Aug 25-30, 2024)
Dear Colleagues,
Within the 26th International Congress of Theoretical and Applied Mechanics (ICTAM 2024) to be held in Daegu, South Korea, 25 – 30 Aug 2024,
Vikram Pakrashi (University College Dublin - Ireland) and myself (Francesco Dal Corso, University of Trento - Italy) are organising the Thematic Session 'FS08 - Education in mechanics'.
Call for abstract submission to mini-symposium MS036 on Smart Soft Materials @ECCOMAS 2024
Dear Colleague,
we invite you and your interested colleagues and students to submit a contribution to the mini-symposium MS036:
“Smart Soft Materials: Additive Manufacturing, Modeling, Design, and Experimentation”
within the 9th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMA2024), that will take place in Lisbon, Portugal, on June 3-7, 2024.
The deadline for presenting an abstract has been extended to January, 29th 2024.
PhD Scholarship on Robotic Metamaterials in The University of Birmingham
The Mechanics of Robotic Metamaterials Group at the department of Mechanical Engineering in the University of Birmingham, UK, led by Dr. Mingchao Liu, is recruiting one PhD student for the fall of 2024. The group is also open to joint PhD students and visiting scholars. Additionally, they offer support to outstanding postdoctoral candidates in applying for fellowships.
Open Postdoc on computational methods to process experimental data
A Postdoctoral Fellow is sought to fill an immediate opening in the Gross Materials Lab at the University of South Carolina to work on a DARPA funded project. The postdoc will have the opportunity to attend regular meetings with DARPA and other DOD program managers. The research is focused on extracting yield surfaces from data rich full-field experimental information by solving an inverse problem. This research will be primarily computational and will integrate closely with a graduate student conducting experiments.
EML Webinar Young Researchers Forum by Xueju Wang, on 16 January 2024: Morphing Materials and Multifunctional Structures/Electronics for Intelligent Systems
EML Webinar (Young Researchers Forum) on 16 January 2024 will be given by Xueju Wang at University of Connecticut via Zoom meeting
Title: Morphing Materials and Multifunctional Structures/Electronics for Intelligent Systems
Discussion leader: Teng Zhang, Syracuse University
Time: 9:30 am Boston, 2:30 pm London, 3:30 pm Paris, 10:30 pm Beijing on Tuesday, 16 January 2024
A Hidden Convexity of Nonlinear Elasticity
Siddharth Singh Janusz Ginster Amit Acharya
A technique for developing convex dual variational principles for the governing PDE of nonlinear elastostatics and elastodynamics is presented. This allows the definition of notions of a variational dual solution and a dual solution corresponding to the PDEs of nonlinear elasticity, even when the latter arise as formal Euler-Lagrange equations corresponding to non-quasiconvex elastic energy functionals whose energy minimizers do not exist. This is demonstrated rigorously in the case of elastostatics for the Saint-Venant Kirchhoff material (in all dimensions), where the existence of variational dual solutions is also proven. The existence of a variational dual solution for the incompressible neo-Hookean material in 2-d is also shown. Stressed and unstressed elastostatic and elastodynamic solutions in 1 space dimension corresponding to a non-convex, double-well energy are computed using the dual methodology. In particular, we show the stability of a dual elastodynamic equilibrium solution for which there are regions of non-vanishing length with negative elastic stiffness, i.e. non-hyperbolic regions, for which the corresponding, primal problem is ill-posed and demonstrates an explosive ‘Hadamard instability;’ this appears to have implications for the modeling of physically observed softening behavior in macroscopic mechanical response.