WOLFRAM SYSTEM MODELER
SupportStiffnessDampingSupport that acts as a translational two-dimensional coupled spring damper |
SystemModel["RotatingMachinery.Supports.SupportStiffnessDamping"]
This class contains equations for a translational two-dimensional coupled spring damper. It is often used as a more realistic contact to ground or a beam compared to a normal fixed contact. A flexible support allows the connected member to move according to its structural constants such as stiffness and damping parameters.
Figure 1: Flexible support parameters tab.
Under the Options, it is recommended to set isRoot to false as long as there are any other type of support.
Following is a graphic of an animation with a SupportStiffnessDamping component attached to a cylindrical beam at the end.
Figure 2: Flexible support.
[1] Schmid, S. R., B. J. Hamrock and Bo. O. Jacobson. Fundamentals of Machine Elements. CRC Press, 2013.
axialFixed |
Value: false Type: Boolean Description: =true, if NDE |
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cxx |
Value: 0 Type: TranslationalDampingConstant (N⋅s/m) Description: Damping constant |
cxy |
Value: 0 Type: TranslationalDampingConstant (N⋅s/m) Description: Damping constant |
cyx |
Value: 0 Type: TranslationalDampingConstant (N⋅s/m) Description: Damping constant |
cyy |
Value: 0 Type: TranslationalDampingConstant (N⋅s/m) Description: Damping constant |
kxx |
Value: 0 Type: TranslationalSpringConstant (N/m) Description: Stiffness constant |
kxy |
Value: 0 Type: TranslationalSpringConstant (N/m) Description: Stiffness constant |
kyx |
Value: 0 Type: TranslationalSpringConstant (N/m) Description: Stiffness constant |
kyy |
Value: 0 Type: TranslationalSpringConstant (N/m) Description: Stiffness constant |
s_unstretched_x |
Value: 0.0 Type: Length (m) Description: Unstretched spring length x-direction |
s_unstretched_y |
Value: 0.0 Type: Length (m) Description: Unstretched spring length y-direction |
unstretcheLengthOfSpring |
Value: sqrt(s_unstretched_x ^ 2 + s_unstretched_y ^ 2) Type: Length (m) Description: Unstretched spring total length |
coilWidth |
Value: unstretcheLengthOfSpring / 15 Type: Distance (m) Description: Width of spring coil |
springWidth |
Value: unstretcheLengthOfSpring / 5 Type: Distance (m) Description: Width of spring |
numberOfWindings |
Value: 6 Type: Integer Description: Number of spring windings |
isRoot |
Value: true Type: Boolean Description: =true, if solution will start from there |
animation |
Value: true Type: Boolean Description: = true, if animation shall be enabled |
RotatingMachinery.Examples.BearingAnalysis Two roller bearings on flexible supports |
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RotatingMachinery.Examples.StabilityAnalysis Finding whirling frequencies of a rotating shaft: Part I |
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RotatingMachinery.Examples.StabilityAnalysis Finding whirling frequencies of a rotating shaft: Part II |
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RotatingMachinery.Examples.JeffcottRotorDamping A basic Jeffcott rotor with internal and external damping |
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RotatingMachinery.Examples.RotorBalancing An unbalanced rotor stabilized by balancing planes |
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RotatingMachinery.Examples.ContactAnalysis Study of a running up clamped free rotor |
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RotatingMachinery.Examples.ContactAnalysis Inspection of deflection of a free rotor without clearance |
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RotatingMachinery.Examples.ContactAnalysis Calculation of deflection for a rotor with a surrounding and a clearance |
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RotatingMachinery.Examples.ContactAnalysis Application of a running down rotor deflection with a clearance |
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RotatingMachinery.Examples.Shafts Inspection of a car axle deflection on tires |