Browsing by Subject "Model-based OPC"

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    Model based anticontrol of chaos
    (IEEE, 2003) Morgül, Ömer
    We will consider model based anticontrol of chaotic systems. We consider both continuous and discrete time cases. We first assume that the systems to be controlled are linear and time invariant. Under controllability assumption, we transform these systems into some canonical forms. We assume the existence of chaotic systems which has similar forms. Then by using appropriate inputs, we match the dynamics of the systems to be controlled and the model chaotic systems.
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    A multiscale method to analyze the deterioration due to alkali silica reaction considering the effects of temperature and relative humidity
    (International Center for Numerical Methods in Engineering, 2013) Wu, T.; Temizer I.; Wriggers P.
    This work presents a three-dimensional multiscale framework to investigate the deterioration resulting from alkali silica reaction (ASR) in the concrete. In this contribution, 3D micro-CT scan of hardened cement paste (HCP) and aggregates with a random distribution embedded in a homogenized cement paste matrix represent the microscale and mesoscale of the concrete respectively. A 3D hydro-chemo-thermo-mechanical model based on staggered method is developed at the mesoscale of the concrete, yet taking into account the deterioration at the microscale due to ASR.