New paper published in Frontiers in Built Environment

The paper entitled A global sensitivity analysis framework for hybrid simulation with stochastic substructures was published in Frontiers in Built Environment. In hybrid simulations, several sources of loading exerted through the physical substructures are inherently stochastic (e.g., fire or hydrodynamic loading) and are not controllable experimentally, nor quantifiable. Due to this stochasticity, for a given setup of the experimental simulation, the outcome is uncertain. To quantitatively assess the effects of this random response, the paper applies the recently developed generalized lambda models to represent the response distribution of such simulations without the need for expensive replications. Based on this stochastic surrogate, various Sobol’ indices can be directly calculated at no additional cost.
This framework is tested on a 3-degrees of freedom hybrid simulation benchmark under thermal and mechanical loads.

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