Load Set Functions
When you select a load set function, the function you select depends on the type of analysis. The following is a list of the different analyses and the load set functions you can define for each of them. It also applies to dynamic analyses with base excitation loading.
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Analysis Type
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Defines
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Function of
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Default Function
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|---|---|---|---|
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dynamic time
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time dependence
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time
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impulse1—A predefined unit impulse function or Dirac Delta function. It has a value of 0 at all times except at time equal to 0. The integral of this function is equal to 1.
|
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dynamic frequency
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amplitude
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frequency
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uniform2—A predefined constant, uniform function with a value equal to 1.
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phase3
|
frequency
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zero3—A predefined constant uniform function, with a value equal to 0.
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|
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dynamic random4
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load set power spectral density
|
frequency
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uniform
|
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static nonlinear
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time dependence
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time
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ramp—Predefined read-only linear function with a slope equal to 1.
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1. When the time function is impulse, an impulse load is applied at the minimum time.
2. When the frequency function is uniform, the load is multiplied by 1 over the frequency range.
3. The phase function is defined in radians.
4. The frequency dependence functions you specify for a random response analysis are the PSD curves for each load set. The engine calculates the PSD response curves for local measures as a function of frequency.
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The default functions are predefined Creo Simulate functions that cannot be modified.
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To select a different function, click 
. The Functions dialog box appears. You can select an existing function or click New to define a new function.
. The Functions dialog box appears. You can select an existing function or click New to define a new function.See Function Definition Dialog Box for information on defining new functions.