v2.02.106 SDLL106 - Beam subject to distributed random excitation

Summary:

A two-embedded beam is subjected to a distributed force over its entire length. The force distribution profile is the same at all frequencies.

The random movement of this beam is evaluated by a stochastic approach: the power spectral density of the displacement is determined at various points on the beam.

We are testing both possibilities:

• spatial function of the forces applied with interspectrum unity (method 1),

• interspectrum constructed directly for excited ddls (method 2).

This test is an illustration of the response of a structure subjected to Aeolian excitation.

• 1. Reference problem
  • 1.1. Geometry
  • 1.2. Material properties
  • 1.3. Boundary conditions and loads
• 2. Benchmark solution
  • 2.1. Calculation method used for the reference solution
  • 2.2. Benchmark results
  • 2.3. Bibliographical references
• 3. Modeling A
  • 3.1. Characteristics of modeling
  • 3.2. Characteristics of the mesh
  • 3.3. notes
  • 3.4. Tested sizes and results
• 4. Summary of results