r5.05.10 Dynamic analysis of structures with viscoelastic materials having frequency dependent properties

Overview:

This reference document tackles the way how advanced capabilities are introduced in*Code_Aster* to take into account frequency dependent properties of viscoelastic materials. Computing of harmonic response and modes of vibration (real or complex) is addressed. Having frequency dependent modes is a step forward for the modal projection method and for model updating with an experimental modal basis as a reference. An iterative method is used in order to compute frequency dependent modes.

• 1. Introduction
• 2. Finite element analysis
  • 2.1. State-of-the-art
  • 2.2. Computation of frequency dependent mode
  • 2.3. Improvement of the modal projection method
• 3. Implementation in Code_Aster
• 4. References