最新ADAMS-Vibration-振动分析模块教程课件ppt
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1 Take your system to different operating points to analyze vibratory behavior (without having to create new models)
2 Include effects of hydraulics, controls, and other subsystems on vibration characteristics
Analyze Vibratory Behavior in Different Configurations
Railcar Example:
System eigenvalues shift according to
Equivalent conicity Suspension stiffnesses Damper characteristics
ADAMS/Vibration Walk-Through
How Does It Work? Sபைடு நூலகம்mplified/Unified Approach
Solution
Input
Motion or Vibration Simulation Process
Post-Processing
Time or Frequency Domain
Inputs
Plots, Animation, Tables, other time and frequency data
Part of process can be quantified with analytical tools
Suppliers must “tune” their systems/components (right the first time) to prototype vehicle or else they are responsible for NVH resolution
System eigenvalues shift according to
Panel deployment angle Locking condition Contact condition Actual spring rates
This shift affects attitude control margin, pointing jitter magnitude, and structural loading conditions
Analyze System Modes Including Attachment Characteristics
Automotive Example:
Engine mount displacements due to combustion forces in dependency of
Engine mount characteristics
…much faster!
Solution: Extend Scope of Virtual Prototyping
Motion/ Performance
Safety
Durability/ Fatigue
Noise/ Vibration
Three Reasons to Use ADAMS/Vibration
3 Analyze system modes including attachment and other nonlinear characteristics
Analyze Vibratory Behavior in Different Configurations
Satellite Example:
Need way to study system
Issues often discovered late in prototype development result in money and time loss
Value in designing right way
The Need
A way to study system-level vibrations the same way you can now study system-level motion problems
Engine mount position
Frequency domain analysis helps designers improve
ADAMS/Vibration 11.0 Capabilities
Frequency domain input forcing functions Frequency response function calculations Modal participation tables Forced vibration animation Forced vibration plotting Generate linear subsystems
This shift affects railcar stability and running comfort
Include Effects of Hydraulics and Controls on System Behavior
Hydraulics Example:
Apply input vibration to control valve and see effect at cylinder pressure and boom movement in frequency response function plots and animations
ADAMS-Vibration-振动分 析模块教程
内容
了解模块功能；
了解Vibration与Linear模块的区别；
使用Vibration模块进行虚拟振动试验及 方案设计。
Industry Efforts and Metrics
NVH involves both objective and subjective development
2 Include effects of hydraulics, controls, and other subsystems on vibration characteristics
Analyze Vibratory Behavior in Different Configurations
Railcar Example:
System eigenvalues shift according to
Equivalent conicity Suspension stiffnesses Damper characteristics
ADAMS/Vibration Walk-Through
How Does It Work? Sபைடு நூலகம்mplified/Unified Approach
Solution
Input
Motion or Vibration Simulation Process
Post-Processing
Time or Frequency Domain
Inputs
Plots, Animation, Tables, other time and frequency data
Part of process can be quantified with analytical tools
Suppliers must “tune” their systems/components (right the first time) to prototype vehicle or else they are responsible for NVH resolution
System eigenvalues shift according to
Panel deployment angle Locking condition Contact condition Actual spring rates
This shift affects attitude control margin, pointing jitter magnitude, and structural loading conditions
Analyze System Modes Including Attachment Characteristics
Automotive Example:
Engine mount displacements due to combustion forces in dependency of
Engine mount characteristics
…much faster!
Solution: Extend Scope of Virtual Prototyping
Motion/ Performance
Safety
Durability/ Fatigue
Noise/ Vibration
Three Reasons to Use ADAMS/Vibration
3 Analyze system modes including attachment and other nonlinear characteristics
Analyze Vibratory Behavior in Different Configurations
Satellite Example:
Need way to study system
Issues often discovered late in prototype development result in money and time loss
Value in designing right way
The Need
A way to study system-level vibrations the same way you can now study system-level motion problems
Engine mount position
Frequency domain analysis helps designers improve
ADAMS/Vibration 11.0 Capabilities
Frequency domain input forcing functions Frequency response function calculations Modal participation tables Forced vibration animation Forced vibration plotting Generate linear subsystems
This shift affects railcar stability and running comfort
Include Effects of Hydraulics and Controls on System Behavior
Hydraulics Example:
Apply input vibration to control valve and see effect at cylinder pressure and boom movement in frequency response function plots and animations
ADAMS-Vibration-振动分 析模块教程
内容
了解模块功能；
了解Vibration与Linear模块的区别；
使用Vibration模块进行虚拟振动试验及 方案设计。
Industry Efforts and Metrics
NVH involves both objective and subjective development