The lecture is organized over Webex
- April 2021: Biological growth: Mathematical modeling and FEM implementation by Dr. Meisam Soleimani (Leibniz University Hannover, Germany)
- May 2021: Computational mechanics for design of energy technologies by Dr. Saumik Dana (University of Southern California, USA)
- June 2021: TBA by Dr. Konduri Aditya (Indian Institute of Science, India)
- July 2021: Stability analysis of highly deformable electroelastic and magnetoelastic structures by Dr. Prashant Saxena (University of Glasgow, UK)
- August 2021: TBA
- September 2021: TBA by Dr. Kawai Kwok (University of Central Florida)
- October 2021: TBA
- November 2021: Deployable-structures to metamaterials: Aren’t tensegrities fascinating? Dr. Ajay B Harish (University of California, Berkeley, USA)
- December 2021: TBA by Dr. Duvvuri Subrahmanyam (Indian Institute of Science, India)
Speaker: Dr. Meisam Soleimani (Institute of Continuum Mechanics, Germany)
Date & time: 24th Apr 2021 @ 12:30 pm (New Delhi) 9:00 am (Berlin), 3:00 pm (Beijing)
Abstract of the lecture Growth phenomena usually occur in living tissues under different mechanobiological stimuli. In this lecture, a mathematical model for the growth driven by nutrient diffusion is extensively presented in a “continuum mechanics” framework. Besides, the practical considerations for FEM implementation in the context of a multiphysics ANSYS User Element are discussed. Several numerical examples are presented to demonstrate the applicability and versatility of the proposed model for reproducing biofilm growth in confined geometries; overgrowth of the arteries walls as a result of inflammation; tumor growth within the brain in the avascular stage; and bone ingrowth in the vicinity of a rough implant surface. It will be shown that all these processes share the same spirit from a “modeling” point of view.
M. Soleimani, N. Muthyala, M. Marino, P. Wriggers, “A novel stress-induced anisotropic growth model driven by nutrient diffusion: Theory, FEM implementation and applications in bio-mechanical problems,” Journal of the Mechanics and Physics of Solids, v. 144, pp. 104097 (2020)
M. Soleimani, “Finite strain visco-elastic growth driven by nutrient diffusion: theory, FEM implementation and an application to the biofilm growth,” Computational Mechanics, v. 64, pp. 1289–1301 (2019)
Speaker: Dr. Saumik Dana (Univ. Southern California, USA)
Date & time: 22th May 2021 @ 6:00 pm (New Delhi) 8:30 am (New York), 2:30 am (Berlin), 8:30 pm (Beijing)
Abstract of the lecture As with most other sciences, computational mechanics has to reconcile with the reality of the new energy and climate mitigation technologies like enhanced geothermal systems and carbon capture and storage. The intellectual capital built up on solving problems in the defense and aerospace sector in the realm of computational mechanics can be put to good use as guiding protocols for the design of these technologies. The talk will focus on specific concepts in computational geometry and fluid structure interaction to enable the solution of large scale carbon capture problems. The second part of the talk will focus on the leverage of deep learning to resolve fundamental physics to later enable the use of data-driven methods.
Speaker: Dr. Prashant Saxena (University of Glasgow, UK)
Date & time: July 2021
Abstract of the lecture In recent years, highly deformable electroelastic and magnetoelastic composite materials have been developed that can undergo significant deformation in the presence of electromagnetic fields. Large deformation in structures are often accompanied by material and structural instabilities that have traditionally been a source of structural failure. In these novel soft materials, “reversible” instabilities can be exploited as a design feature to develop multifunctional components.
In this presentation, I will first discuss the mathematical models currently used to describe nonlinear electro-mechanical and magneto-mechanical coupling in soft elastomers. I will then discuss the fundamental techniques to model instabilities based on variational principles and on the tension field theory. Finally, I will present some recent results on modelling limit point, wrinkling, and symmetry-breaking instabilities in the inflation of thin electroelastic and magnetoelastic membranes.
Reddy, N. H., & Saxena, P. (2017). “Limit points in the free inflation of a magnetoelastic toroidal membrane,” International Journal of Non-Linear Mechanics, 95, 248–263.
Reddy, N. H., & Saxena, P. (2018). “Instabilities in the axisymmetric magnetoelastic deformation of a cylindrical membrane,” International Journal of Solids and Structures, 136–137, 203–219.
Liu, Z., McBride, A.T., Sharma, B.L., Steinmann, P., Saxena, P. (2021) “Coupled electro-elastic deformation and instabilities of a toroidal membrane”, Journal of the Mechanics and Physics of Solids, doi: 10.1016/j.jmps.2020.104221
All publications are open to access at this webpage.