Review what are modal and direct methods, and learn about their usage in response analysis.
- [Instructor] Now in this video we're going to talk about…the difference between modal methods…and direct methods of solution.…And the transient response and frequency response…are split into these two fields.…When we're thinking in modal methods,…an example might be, the first four Mode Shapes…of the plates that we see here.…These are the Eigenvectors, or the Mode Shapes,…we call them Phi one, Phi two, Phi three, and Phi four.…So the Normal Modes analysis can store these Mode Shapes,…we're going to see an example of what we call…a Modal Database in Autodesk Nastran,…an MDB where these can be stored away.…
So that database, we can think of like a big storage bucket…which is saving the Mode Shapes,…so those four Mode Shapes saved off in the Modal Database.…The stored Mode Shapes,…or Eigenvectors, can be then used in response analysis.…We're going to see examples where we can very nicely…re-use this data.…In transient response excitation,…we have a particular deflection shown at 0.097 seconds,…so it's like a snapshot in time.…
- Building and running a normal modes analysis
- Mass modeling in dynamics
- Stiffness modeling in dynamics
- Rigid body modes
- Mass participation
- Advanced Nastran editing
- Transient analysis
- Frequency response analysis
Skill Level Intermediate
Autodesk Inventor Professional: Stress Analysis Toolswith Thom Tremblay25m 53s Intermediate
SOLIDWORKS: Simulation for Finite Element Analysiswith Tony Abbey2h 29m Intermediate
SOLIDWORKS Simulation: Dynamic Analysiswith Tony Abbey2h 40m Intermediate
1. Normal Modes Analysis
2. Key Dynamic Analysis Concepts
3. Advanced Editing in Autodesk Nastran In-CAD
Nastran editing methods7m 26s
4. Transient Analysis
5. Frequency Response Analysis
Next steps1m 35s
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