Multiscale modelling and analysis of biomechanics of plant tissues

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• Mariya Ptashnyk (Heriot-Watt University)
• Tuesday 01 August 2023, 14:30-15:30
• Seminar Room 1, Newton Institute.

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USMW02 - Mathematical mechanical biology: old school and new school, methods and applications

Many biological tissues must be structured in such a way as to be able to adapt to two extreme biomechanical scenarios: they have to be strong to resist high pressure and mechanical forces and yet be flexible to allow large expansions and growth. A part of nature’s solution to this intriguing problem are the complex microstructures and microscopic (cellular) processes, that modify tissue’s elastic properties. To analyse the interplay between the mechanics, microstructure, and the chemistry we derive microscopic models for plant biomechanics, assuming that the elastic properties depend on the chemical processes and chemical reactions depend on the mechanical stresses. Multiplicative decomposition of the deformation gradient into elastic and growth parts is used to model the stress or strain based growth. To analyse the properties and behaviour of plant tissues, the macroscopic models are derived using homogenization techniques. Numerical solutions for macroscopic models demonstrate the impact of the microstructure on tissue deformations and growth.

This talk is part of the Isaac Newton Institute Seminar Series series.

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