48 citations · 252 across the 96 of their papers we have counts for
7 papers · 2 filters
Relative Primal--Dual Gap Certificates for Operator-Composite Trust-Region Methods
Harbir Antil
We study trust-region minimization of a smooth, possibly nonconvex functional plus a convex functional composed with a bounded linear operator. A relative primal--dual gap conditio…
A Function-Space Framework for BDDC Preconditioning in Control- and State-Constrained Sparse Optimal Control
Harbir Antil, Keegan L. A. Kirk, Umarkhon Rakhimov
We develop a Balancing Domain Decomposition by Constraints (BDDC) preconditioner for the interface systems arising from active-set semi-smooth Newton linearizations of elliptic opt…
Structure-Preserving Optimal Control of Maxwell's Equations with Applications to Source Cloaking
Harbir Antil, Yaw Owusu-Agyemang, Rohit Khandelwal +2
We develop a structure-preserving solution framework for the optimal control of the time-dependent Maxwell's equations. Building on a well-posedness theory for a weak form of the f…
An online adaptive finite-element method for nonsmooth PDE-constrained optimization
Harbir Antil, Robert J. Baraldi, Rohit Khandelwal +1
We present a trust-region-based adaptive finite-element algorithm for numerically solving a class of nonsmooth PDE-constrained optimization problems that includes problems with spa…
Risk-averse optimization under distributional uncertainty with Rockafellian relaxation
Harbir Antil, Alonso J. Bustos, Sean P. Carney +1
A framework for risk-averse optimization problems is introduced that is resilient to ambiguities in the true form of the underlying probability distribution. The focus is on proble…
One-Way Thermo-Mechanical Coupled System Identification Using Displacement and Temperature Measurements
Talhah Shamshad Ali Ansari, Suneth Warnakulasuriya, Ihar Antonau +3
Structural system identification in the presence of thermal loads is challenging, as unmeasured or poorly modeled thermal effects can mask or mimic damage, leading to unreliable co…
Fisher-Information-Based Sensor Placement for Structural Digital Twins: Analytic Results and Benchmarks
Harbir Antil, Animesh Jain, Rainald Löhner
High-fidelity digital twins rely on the accurate assimilation of sensor data into physics-based computational models. In structural applications, such twins aim to identify spatial…