v5.01.121 SDND121 — Spring mass system with shocks under forced excitation

Summary:

This problem corresponds to a transient analysis by modal recombination of a discrete system that is nonlinear with one degree of freedom. Nonlinearity consists of contact with shock on a rigid plane. The mass is subjected to forced arousal. The problem is steep, i.e. the stiffness is very different between the phases of free flight and the phases of contact. This problem makes it possible to test the energy balance for the various temporal integration schemes, as well as the kinematics.

• 1. Reference problem
  • 1.1. Geometry
  • 1.2. Material properties
  • 1.3. Initial conditions, limits and loading
• 2. Benchmark solution
  • 2.1. Calculation method used for the reference solution
  • 2.2. Benchmark results
  • 2.3. Uncertainty about the solution
• 3. Modeling
  • 3.1. Characteristics of modeling
  • 3.2. Characteristics of the mesh
  • 3.3. Tested sizes and results
• 4. Summary of results