Shock and Vibration/DDAM Analysis Training
Advanced discussion of dynamics as applied to shock and vibration. Will discuss modal analysis, modal significance, response spectrum analysis, harmonic analysis, transient analysis and DDAM and how each of these are applied to shock and vibration analyses. Will discuss modeling issues specific to these types of analyses and things to look for when checking and debugging these models.
Prerequisites: Proficiency in the use of Femap and basic Nastran knowledge
Length: 3 Days
Class Schedule
Day 1
- Shock Problems
- Review of dynamics theory
- Types of dynamic problems
- Modal Analysis
- Theory
- Tips and Techniques
- Workshop Problem (WS1)
- Mesh Density
- How many modes?
- Lunch Recess
- Mil standards
- What analysis is appropriate?
- Examples
- Workshop on modeling choices (WS2)
- Shock - air blast vs water blast
Day 2
- DDAM
- Theory
- Simple example
- Simple workshop problem (WS3)
- Issues with DDAM
- Harder example (WS4)
- Hard workshop (WS5)
- Lunch Recess
- DDAM wrap up
- When DDAM is not acceptable
- Transient Analysis
- Introduction and theory
- Getting shock loads
- How much to model
- Workshop with transient (WS6)
Day 3
- Transient Analysis
- Direct Formulation
- Harder example (WS7)
- Bigger workshop (WS8)
- Damping (WS9)
- Modal Formulation (WS10)
- Workshop (WS11)
- Vibration
- Introduction and theory
- Direct Formulation
- Simple workshop
- Lunch Recess
- Modal formulation
- Harder example (WS13)
- Workshop (WS14)
- MIL 167
- Wrap up
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