Learn about base motion in dynamic response.
- [Instructor] In this video we're going to describe…how we can define Base Motion…in a Dynamic Response analysis.…Now for Base Motion we're shaking through the base,…we're moving the structure body through the base.…The loading is applied through these base points.…It's a little symbology that's used…in Autodesk Nastran to define that.…It represents a base excitation, examples could be…earthquakes for example, transmitted blast or shock loading.…Something is bodily picking the structure up and giving it…a good shake in some way.…
Now we can describe this as a displacement, time history,…velocity, or acceleration.…Any of these can be an input into the base.…It can be a transient response so we see a response…through time or it can be a frequency response,…rather like sitting on a shaking table,…where we are vibrating something through a base…in a range of different frequency inputs.…A Uniform Base Excitation is applied to selected entities,…it's enforced motion, its mapped to nodal…degrees of freedom.…
Now the excited degree of freedom at each node we define…
- 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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