Concatenates multiple lines into one line for mapped meshing.

Compatible Products: – | Pro | Premium | Enterprise | Ent PP | Ent Solver | DYNA

NL1, NL2

Lines to be concatenated. If NL1 = ALL, NL2 is ignored and all selected lines [LSEL] are concatenated. If NL1 = P, graphical picking is enabled and all remaining command fields are ignored (valid only in the GUI). A component name may also be substituted for NL1 (NL2 is ignored).


Concatenates multiple, adjacent lines (the input lines) into one line (the output line) in preparation for mapped meshing. An area that contains too many lines for mapped meshing can still be mapped meshed if some of the lines in that area are first concatenated (see Meshing Your Solid Model in the Modeling and Meshing Guide for details on mapped meshing restrictions).

LCCAT is meant to be used solely for meshing and cannot be used for any other purposes. Specifically, (a) the output line and any areas that have the output line on their line list [ALIST] cannot be used as input to any other solid modeling operation (not even another LCCAT command); and (b) the output line cannot accept solid model boundary conditions [DL, SFL].

The output line will take on the element divisions of the input lines and will not accept element divisions that are directly assigned [LESIZE]. The output line from the LCCAT operation will be coincident with the input lines and the input lines will be retained. Consider the LCOMB command instead of LCCAT if you wish to delete the input lines and if the lines to be combined have similar slopes at the common keypoint(s). When an LCCAT command is issued, area line lists [ALIST] that contain all of the input lines will be updated so that the area line lists refer to the output line instead of the input lines. Deletion of the output line [LDELE] effectively reverses the LCCAT operation and restores area line lists to their original condition.

You can use the LSEL command to select lines that were created by concatenation, and then follow it with an LDELE,ALL command to delete them. Also see Meshing Your Solid Model in the Modeling and Meshing Guide for a discussion on how to easily select and delete concatenated lines in one step.

Menu Paths

Main Menu>Preprocessor>Meshing>Mesh>Areas>Mapped>Concatenate>Lines
Main Menu>Preprocessor>Meshing>Mesh>Volumes>Mapped>Concatenate>Lines
Main Menu>Solution>Manual Rezoning>Create Remesh Zone(s)>Geometry Controls>Concatenate Lines

Release 18.2 - © ANSYS, Inc. All rights reserved.