Combination cases 

This case consists of combining the results of load cases, dynamic cases or previously calculated
combination cases to form a new case.

When selecting Combination cases, all existing combinations are listed in the combobox :

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The cases appear with their Case number + Title.

1. General

When editing, the definition window shows up :

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Enter a Case number and a Title.

Ref. case :

Operating pressures (and allowable stresses) of the reference case will be used for this case. The calculation of the allowable stresses depends on the current calculation code.

Click here for more information about all possible codes.

Level :

This field is intended for nuclear piping codes only. The possible values are : A (normal conditions), B (upset), C (emergency), D (faulted) and T (test).

Equation :

The equations are code-dependent.

Method :

  • 0- Algebraic addition
  • 1- Absolute addition
  • 2- SRSS
  • 3- Seismic
  • 4- Maximum absolute
  • 6- Algebraic maximum
  • 7- Algebraic minimum
  • 8- Range
  • 9- Max resultant moment range
  • S- Max thermal stress range

Duration :

In hours.

Dynamic load flag :

  • For ASME Class 1 : the flag is a number from 1 to 9 that identifies the dynamic moments to be used in Equation 13
  • For RCC-M Class 1 : the flag with number 1 identifies the operational earthquake

Number of cycles :

  • For ASME Class 1 : number of sub-cycles predicted for each occurrence of the dynamic event (default = 1)
  • For RCC-M Class 1 : number of occurences of the seismic event if the analysis type is 0, or number of seismic sub-cycles if the analysis type is 1

Analysis type :

  • For RCC-M Class 1 only : enter 0 (or blank) for the total earthquake moments and 1 for the primary (inertial) earthquake moments

2. Combined cases

Enter the number of the constituent cases and the corresponding factor (1) :

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On right side, as a reminder, the list of all cases (2). You can filter them by selecting the type :

  • All
  • Static
  • Dynamic
  • Combination