Nonlinear possibilities ========================== Two operators are available for the study of non-linear behaviors: * THER_NON_LINE [:external:ref:`U4.54.02 `]: this operator allows, stationary or transiently, to solve the problems of: * Standard non-linear thermal: material dependent on temperature, boundary conditions (radiation and non-linear imposed flux), * Nonlinear thermal with calculation of the hydration of concrete, * Drying of concrete. * THER_NON_LINE_MO [:external:ref:`U4.54.03 `]: this operator makes it possible to solve the stationary heat equation in a moving frame of reference linked to a loading and moving in a given direction and at a given speed.