Assignment of characteristics
================================

For these discrete elements, it is necessary to assign geometric characteristics that are complementary to the mesh data. These data are defined with the AFFE_CARA_ELEM command associated with the following factor keywords:

* **DISCRET**. Allows you to define and assign the values of stiffness, mass, or damping matrices. Supported models: "DIS_T", "DIS_TR"

* **ORIENTATION**. Allows you to define and assign a local coordinate system. Supported models: "DIS_T", "DIS_TR"