19 citations · 41 across the 11 of their papers we have counts for
14 papers
Wake-induced dynamics of soft-impact oscillators: Analysis and electronic experimental validation
Rohit Chawla, Soumyajit Seth, Vikram Pakrashi
This article presents an electronic experimental validation of discontinuity-induced bifurcations, including period-adding cascades, in a wake-induced dynamical system subjected to…
Parameter Estimation in Machining Dynamics with Regenerative Delay and Nonsmooth Friction using Physics-Informed Neural Networks
Meiyazhagan Jaganathan, Vikram Pakrashi, Aasifa Rounak
A multi-domain eXtended Physics-Informed Neural Network (XPINN) framework is developed for nonsmooth Delay Differential Equations (DDEs). This is the first implementation to demons…
Bellman Memory Units: A neuromorphic framework for synaptic reinforcement learning with an evolving network topology
Shreyan Banerjee, Aasifa Rounak, Vikram Pakrashi
Application of neuromorphic edge devices for control is limited by the constraints on gradient-free online learning and scalability of the hardware across control problems. This pa…
Neuromorphic computing for anomaly detection in a laser powder bed fusion process
Shreyan Banerjee, Aasifa Rounak, Cathal Hoare +2
This study is the first application of spiking neural networks (SNNs) for anomaly detection in the Laser Powder Bed Fusion (LPBF) additive manufacturing process. The neural network…
Explaining Optomechanical Libration Spectra: A Stochastic Simulation Approach
Ankush Gogoi, Vikram Pakrashi, Joanna A. Zielinska
We present a practical and computationally effective Ito-Taylor expansion based stochastic simulation framework for modeling rotational optomechanics experiments. By developing a m…
Benchmarking Spiking Neurons for Linear Quadratic Regulator Control of Multi-linked Pole on a Cart: from Single Neuron to Ensemble
Shreyan Banerjee, Luna Gava, Aasifa Rounak +1
The emerging field of neuromorphic computing for edge control applications poses the need to quantitatively estimate and limit the number of spiking neurons, to reduce network comp…
Higher-Order Transverse Discontinuity Mapping in Filippov Systems: Analysis and Experimental Validation using an Electronic Circuit
Rohit Chawla, Soumyajit Seth, Aasifa Rounak +1
This paper shows that linearizing the transverse discontinuity mapping (TDM) in Filippov systems can produce inaccurate predictions of the dynamics in impact oscillators operating…
A finite volume Simo-Reissner beam method for moored floating body dynamics
Amirhossein Taran, Seevani Bali, Zeljko Tukovic +2
This paper presents a novel finite volume mooring line model based on the geometrically exact Simo-Reissner beam model for analysing the interaction between a floating rigid body a…
Exploring Chaos and Ergodic behavior of an Inductorless Circuit driven by Stochastic Parameters
Soumyajit Seth, Abhijit Bera, Vikram Pakrashi
There exist extensive studies on periodic and random perturbations of various continuous maps investigating their dynamics. This paper presents a random piecewise smooth map derive…
Wake-induced response of vibro-impacting systems
Rohit Chawla, Aasifa Rounak, Chandan Bose +1
The stability and bifurcation behaviour of a wake-induced vibro-impacting oscillator is studied. The effects of a discontinuity on the stability of the structure while it is underg…
Improved Stability Estimates and Flight Time Predictions Using Higher-Order Transverse Discontinuity Mapping in Hybrid Dynamical Systems
Rohit Chawla, Aasifa Rounak, Vikram Pakrashi
This article emphasizes on inconsistencies in the dynamical estimates obtained by first-order transverse discontinuity mapping (TDM) and direct numerical observations for hybrid dy…
A cell-centred finite volume formulation of geometrically-exact Simo-Reissner beams with arbitrary initial curvatures
Seevani Bali, Željko Tuković, Philip Cardiff +2
This paper presents a novel total Lagrangian cell-centred finite volume formulation of geometrically exact beams with arbitrary initial curvature undergoing large displacements and…
Effective Bounds on Network-Size for Anti-phase Synchronization
George Vathakkattil Joseph, Vikram Pakrashi
We consider anti-phase synchronization of coupled oscillators using the Stuart-Landau model and explore its relative infrequency in occurrence compared to in-phase synchronization.…
Extreme Value Estimates using Vibration Energy Harvesting
George Vathakkattil Joseph, Guangbo Hao, Vikram Pakrashi
This paper establishes the possibility of utilising energy harvesting from mechanical vibrations to estimate extreme value responses of the host structure and demonstrates the cali…