Stochastic dynamics of fluid–structure interaction in turbulent thermal convection

J Mac Huang, JQ Zhong, J Zhang… - Journal of Fluid …, 2018 - cambridge.org
The motion of a free-moving plate atop turbulent thermal convection exhibits diverse
dynamics that displays characteristics of both deterministic and chaotic motions. Early …

Exponential mixing of constrained random dynamical systems via controllability conditions

L Mertz, V Nersesyan, M Rissel - SIAM Journal on Control and Optimization, 2024 - SIAM
We provide deterministic controllability conditions that imply exponential mixing properties
for randomly forced constrained dynamical systems with possibly unbounded state space …

A piecewise deterministic Markov process approach modeling a dry friction problem with noise

J Garnier, Z Lu, L Mertz - SIAM Journal on Applied Mathematics, 2023 - SIAM
Understanding and predicting the dynamical properties of systems involving dry friction is a
major concern in physics and engineering. It abounds in many mechanical processes, from …

An analytical approach for the growth rate of the variance of the deformation related to an elasto-plastic oscillator excited by a white noise

A Bensoussan, C Feau, L Mertz… - Applied Mathematics …, 2015 - academic.oup.com
For a few decades ago, there has been a huge amount of studies on plastic deformation of
elasto-plastic oscillators in the engineering literature. In one of our recent works, we …

Asymptotic formulae for the risk of failure related to an elasto-plastic problem with noise

C Feau, M Laurière, L Mertz - Asymptotic Analysis, 2017 - journals.sagepub.com
The risk of failure of mechanical structures under random forcing is an important concern in
earthquake engineering. For a class of simple structures that can be modeled by an elasto …

Nonlocal boundary value problems of a stochastic variational inequality modeling an elasto-plastic oscillator excited by a filtered noise

A Bensoussan, L Mertz, SCP Yam - SIAM Journal on Mathematical Analysis, 2016 - SIAM
In the literature, failure risk analysis on most elasto-perfectly-plastic oscillators is essentially
focused on those excited by white noise, which is rather restrictive from the modeling …

A Feynman–Kac formula approach for computing expectations and threshold crossing probabilities of non-smooth stochastic dynamical systems

L Mertz, G Stadler, J Wylie - Physica D: Nonlinear Phenomena, 2019 - Elsevier
We present a computational alternative to probabilistic simulations for non-smooth
stochastic dynamical systems that are prevalent in engineering mechanics. As examples, we …

Penalization of a stochastic variational inequality modeling an elasto-plastic problem with noise

M Laurière, L Mertz - ESAIM: Proceedings and Surveys, 2015 - esaim-proc.org
In a recent work of A. Bensoussan and J. Turi Degenerate Dirichlet Problems Related to the
Invariant Measure of Elasto-Plastic Oscillators, AMO, 2008, it has been shown that the …

Approximate solutions of a stochastic variational inequality modeling an elasto-plastic problem with noise

H Jasso-Fuentes, L Mertz… - Applied Mathematics …, 2014 - academic.oup.com
An important issue in the failure analysis of some mechanical structures under seismic
forcing is to estimate the statistics of the response of an elasto-perfectly plastic oscillator with …

Free boundary value problems and hjb equations for the stochastic optimal control of elasto-plastic oscillators

M Lauriere, Z Li, L Mertz, J Wylie… - ESAIM: proceedings and …, 2019 - esaim-proc.org
We consider the optimal stopping and optimal control problems related to stochastic
variational inequalities modeling elasto-plastic oscillators subject to random forcing. We …