Learn the background to stiffness modeling.
- [Instructor] In this video, we're going to look at some…of the things which affect the stiffness distribution…inside of modeling dynamics.…So, in other words, stiffness modeling,…and one of the first things is the mesh density,…and that's controlled by the highest order mode shape.…We look here at, say, mode 10, 2,000 hertz,…and we've got to have a very fine mesh…to capture that shape.…Both mode nine and mode 10 are complicated shapes.…If we don't have a fine enough mesh,…then we don't capture the shape,…and in fact, it usually ends up over-stiff.…
We're going to run an example where we actually deliberately…set up a very poor mesh,…and so now the mode nine and 10 are completely different.…In fact, they're probably not realistic,…and they're probably nonsensical.…We have to have adequate mesh to capture…that higher frequency content.…What can happen though is that the very coarse mesh…I've got there has actually captured pretty well…what we call the first extensional mode…and the first lateral bending mode.…
- 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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