A solid is a spatial object that is defined by surfaces on all sides. Additional properties can be assigned to the solid such as homogeneous, isotropic or orthotropic materials, properties of an ideal gas, or contact properties between two surfaces.
Entering in RFEM
The solid can be entered and defined using the menu "Insert" → "Model Data" → "Solids", or the Data navigator. In the input dialog box, you can select the boundary surfaces and define the solid type.