# Dynamic cable (FEA)¶

Dynamic cables are based on Finite Element Analysis (FEA) elements : thin cylindrical beams with two nodes and Euler-Bernoulli formulation. The section and material properties are assumed constant along the beam. Stretch, torsion and flexion are included, while shear is not considered in Euler-Bernoulli theory.

The properties of the section of the beam are defined using the following parameters :

- radius \(r\), in m
- area \(A\), in m²;
- linear density \(q\), in kg/m;
- Young modulus \(E\), in Pa;
- area moment of inertia \(I_{rr}\), in kg.m² ;
- shear modulus \(G\) (for torsional effects);
- torsion constant \(J\);
- Rayleigh damping \(D_R\).

For more information about the theory, refer to [TASORA].