Connectors and E-Lines Manager

After creation of E-Lines connectors using the Manual and/or Auto methods, all the evaluation lines with connector locations and other related parameters will be listed in Review E-lines panel. Below is the image of Review E-Lines panel.

Figure 1.
The E-line data is tabulated in the following format:
Options to select the required E-Line
  • Select All
  • Unselect All
  • Reverse Selection
Check box option to turn on or off the visibility of the E-Line
  • Show All
  • Hide All
  • Reverse Visibility
Status Contains the Elines realization status
  • Yellow - unrealized Elines
  • Green - realized Elines
  • Red - failed to realize ELines
E-Line ID Contains the information for interface number along with the number of connectors for respective lines
Interface Name Contains the information for the gap/interface name
Type Contains the information for the type of ELine
Contact Type Contains the information for contact type.This information is defined based on Youngs' modulus values
Spacing Value for the spacing between two adjacent connectors
Search Distance Value for search/gap tolerance between the selected master slave component

Review ELines panel allows you to perform following actions:

  • Delete Failed - to delete any failed lines in the session
  • Delete - to delete only the selected Eline from the table
  • Visibility Navigation - to view the successfully realized E-Line.
    • This option isolates selected interface, and the components in graphics area
    • Navigation buttons are provided to cycle through the list of E-Lines
  • Realize - to realize Elines to create connecters and related properties
    • You can realize single or multiple E-lines from the table
  • Also, you can edit and update following parameters:
    • Interface Name
    • Line Type
    • Contact Type
    • Spacing
    • Search Distance
  • Bulk Renumber E-Lines - you can renumber the E-Lines from the list based on a range:
    • Minimum ID
    • Maximum ID
  • Delete Connection - you can delete realized connection points from an ELine
    • This will update the interface number based on the number of connections deleted
    • Undo - to undo/revoke Delete Connection operation for the immediate previous step

ELine realization

An ELine is said to be realized, only when the below mentioned processes occurs and the respective components are created and listed in Model browser tab. For the below mentioned process, standard HyperMesh options are utilized, but automated with SnRD options. Once you clicks Realize Selected option,
  1. RBE3 elements are created on master and slave component and assigned with an unique ID. The numbering of RBE is based on the interface number.
    1. Slave component CBUSH nodes are assigned IDs with 1000 incremented to that of Master Component CBUSH nodes, I.e if CBUSH master node is 510001, CBUSH slave node will be 511001
  2. CBUSH elements are created between the RBE3 spiders created between the master and slave component. CBUSH ID is same as Master RBE ID.
    1. For a Rattle line, a CBUSH_Rattle property is created, with K values zero in all directions.
    2. For a Squeak line, a CBUSH_Squeak property is created, with K values zero for K1, K2, K4, K5, K6. K3 is assigned with 1000 [N/mm] value.This is a default value that can be modified by the analyst depending on the application. This is a constraint Z direction motion between master and slave for squeak line scenario.
  3. A local system collector is created at the master RBE node, where Z direction defines the direction of the relative displacement. The orientation is based on gap direction defined while creating the connectors.
    1. Normal to master
    2. Inplane to master
  4. Initial Interface number is also updated with the number of connectors realized appended at the end. For example, if a interface number 510000 is realized, and 24 connectors are created along the interface, then the final interface number will be 510024.

Figure 2.

Bulk Renumber E-Line

With the help of Bulk Renumber E-Lines option, you can renumber existing evaluation lines with a range from minimum to maximum ID. After renumbering, the corresponding E-Lines, RBEs and CBUSH elements are assigned with the new range of minimum and maximum values.

Figure 3.
E-lines renumbering follows the below principle -
Minimum ID input value * 1000 + n = Renumbered Master ID
Renumbered Master ID + 1000 + n = Renumbered Slave ID

where n is the number of E points in the line.

Below is an example for renumbering of existing E-Lines.
  1. From the E-Lines list, select the required lines for renumbering.
  2. Enter the minimum and maximum ID range.
  3. Click Renumber.

    Figure 4.