The document deals with the damping of materials and members and showes simplified models for damped structures. All of the models presented below assume, for the sake of simplification that there is lining damping. This assumption should be checked in the concrete case of application.
VDI 3830 Blatt 4-2005 history
2005VDI 3830 Blatt 4-2005 Damping of materials and members - Models for damped structures
2003VDI 3830 Blatt 4-2003 Damping of materials and members - Models for damped structures