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Nonlinear Modelling and Optimization of Engineering Systems

Dr Haris Malik
SISSA mathLab
Wednesday, November 22, 2017 - 17:00 to 18:00

 This is a two part seminar based on recent research in modeling and optimization, and its diverse applications. In the first part, numerical modeling of damage propagation in composite materials under impact and optimization of composite structures to enhance the impact characteristics is considered. Finite Element Analysis (FEM) is used for simulation, while optimization is accrued out using Artificial Neural Network (ANN) and Differential Evolution (DE) algorithms. In the second part, a brief overview of research at Ecole Centrale Nantes and Universitat Politecnica de Catalunya carried out by the speaker is provided. Large non-linear dynamical systems, such as transient dynamics of power grids and distributions systems are modeled. These large models usually require high performance computing for their design, load flow and stability analysis. However, for real time applications, especially in the transient regime during which instabilities can lead to network failure and power outages, it is important to have models that can be solved numerically with laptops or other handheld devices like tablets. To achieve this, the model order is reduced both a posteriori and a priori based on involved mathematical analysis. These techniques were applied both on the system level and component level of the power grids. This talk will appeal to multiple engineering disciplines, as modeling and optimization are quite generic frameworks. 

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