Main window Interfaces tab: CAD > CADPIPE
Provides a one-way transfer of the geometry data from CADPIPE to CAESAR II. The geometry data consists of pipe lengths, diameters, thicknesses, connectivities, and node numbers. All nodal specific quantities, such as restraints, loads, and displacements, must be manually added to the CAESAR II input file.
The CADPIPE external interface is set up so that several models can be transferred in a single session. During data transfer, the interface first prompts you for the name of the CADPIPE connectivity (.UDE ) neutral file. After you specify the file name, the data transfer process begins. When that transfer is complete, the interface prompts you for another neutral file name. This cycle continues until you cancel the data transfer process.
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The neutral file read by the interface must be generated by the CADPIPE software. For more information, refer to the CADPIPE product documentation.
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The CADPIPE neutral file must be transferred to the current CAESAR II folder so that it is available to the external interface.
The interface reads the CADPIPE neutral file, and generates the CAESAR II input file and a log file of the data transfer process. Check the data in both the CAESAR II input file and the log file for consistency and any assumptions made by the interface.
The following paragraphs describe the layout of the data extracted from the CADPIPE neutral file and how it is arranged for storage in the interface. The data storage is maintained in two arrays. The first array contains geometry data for each pipe element; the second array contains additional load and specification data.
In the first array, an entry is required for each piece of pipe in the system. "Pipe" refers to an entity between two nodes, which can be a pipe or a rigid element. There are 12 values per entry, and all values must be specified.
Field 1- ELMT |
Enter the pipe element number, which can correspond to an entry in the second array. This is also the pipe or element number in the model. Values must be sequential from 1. |
Field 2 - N1 |
Enter the From node number, which is the starting node for the element. Values must be greater than zero and less than 32000. |
Field 3 - N2 |
Enter the To node number, which is the ending node for the element. Values must be greater than zero and less than 32000. |
Field 4 - DX |
Enter the delta X dimension for the element. This is the distance between N1 and N2 in the X direction. |
Field 5 - DY |
Enter the delta Y dimension for the element. This is the distance between N1 and N2 in the Y direction. In CAESAR II, Y is vertical. |
Field 6 - DZ |
Enter the delta Z dimension for the element. This is the distance between N1 and N2 in the Z direction. |
Field 7 - DIAM |
Enter the pipe outer diameter. |
Field 8 - THK |
Enter the pipe wall thickness. |
Field 9 - ANCH |
Specify the location of the restraint (support). If there is a restraint on N1, ANCH is 1. If there is a restraint on N2, then ANCH is 2. The type of restraint can be obtained from the second array. |
Field 10 - BND |
Specify whether there is a bend at the N2 end of the element. If BND is 1, there is a bend at N2. If BND is 0, this is a straight pipe. |
Field 11 - BRAD |
Specify the bend radius if the bend is not a long radius bend. This value is the required bend radius. |
Field 12 - RIGD |
Indicate whether the current element is a rigid element. |
Records in the second array are only necessary when additional data is required. This means there is always a record in the first array for pipe element #1, which could be the only entry in the array. Any additional entries contain some type of change to data normally duplicated forward by CAESAR II.
Field 1 - ELMT |
Enter the pipe element number, which corresponds to an entry in the first array. This is also a pipe or element number in the model. Values are sequential from 1. |
Field 2 - TEMP1 |
Enter the operating temperature for load case 1. You can find this value by scanning the CADPIPE data for the maximum temperature. |
Field 3 - PRESS1 |
Enter the operating pressure for load case 1. You can find this value by scanning the CADPIPE data for the maximum pressure. |
Field 4 - RGDWGT |
Enter the weight of rigid elements. This entry is only required if you set the RIGID flag in the first array. |
Field 5 - TEEFLG |
Specify the TEE type. Acceptable values are:
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Field 6 - RESTYP |
Specify the restraint (support) type indicator. Acceptable values are:
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Field 7 - RINFO1 |
Enter the restraint stiffness for the support. |
Field 8 - RINFO2 |
Enter the restraint gap for the support. |
Field 9 - RINFO3 |
Enter the restraint friction coefficient for the support. |
Field 10 - MATID |
Enter the CAESAR II material ID value. If the coefficient of expansion is to be changed, it should be entered in the Temperature field above (Field 2). |
Field 11 - EMOD |
Enter the value of Young’s modulus. |
Field 12 - POIS |
Enter the value of Poisson’s ratio. |
Field 13 - GAMMA |
Enter the weight density of the material. |
Field 14 - INSTHK |
Enter the insulation thickness. |
Field 15 - INSWGT |
Enter the weight density of the insulation material. |
Field 16 - FLDWGT |
Enter the weight density of the pipe contents (fluid). |
Field 17 - TEENOD |
Enter the element node number where there is a tee. |
Field 18 |
Placeholder for future development. |
Field 19 |
Placeholder for future development. |
Field 20 |
Placeholder for future development. |