Résumé
Painted wood panels of Cultural Heritage (furnitures, musical instruments, paintings...) are often sensitive to several loadings such as mechanical restraint, as well as humidity and temperature cycles due to the hygrothermal variations of the surrounding environment. To improve preventive conservation and to guide restoration acts on wooden artworks, virtual testing via numerical simulation is necessary to assess a risk analysis, in order to predict if the object will remain safe under various scenarii. We focuss herein on a numerical strategy, belonging to the family of partitioning schemes, to solve the coupled problem of interactions between the panel support and the pictural layer and we consider humidity variations only as a first step, with isothermal evolutions. When dedicated to one-sided painted panels for which main moisture gradient is along the thickness of the panel, the same framework allows the coupling of a 2D plate model for the panel, and a transverse 1D model for the water diffusion, which is tested on the Mona Lisa case.