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Typical error message found in the LUSAS Solver text output file (*.OUT):

***ERROR*** TOO MANY ADJACENT ELEMENTS - INCREASE VALUE OF MXSLAE USING SYSTEM COMMAND (UPDCSH PROCESSOR) 


This message signifies that there are more elements meeting at a single node than permitted by the System Parameter MXSLAE which is set to 64 by default.  This type of mesh layout generally occurs where a number of surfaces share a common point.

In general it is not advisable to have many elements meeting at a single node as this often means a poor mesh configuration; in the first instance we would advise changing the mesh layout should this error message be obtained to reduce the number of elements meeting at a single node.  Unfortunately the node in question is not output by the error message and so a scan of the mesh layout will be necessary to determine where the problem lies.

If it is not possible to adjust the mesh layout then the System Parameter MXSLAE will need to be increased.  This can be carried out for the current model only or globally such that the restriction is increased for all model files.

To increase the parameter for the current model only, go to File > Model Properties... > Solver System Variables (tab) and enter a value equal to or greater than the number of adjacent elements at a single node next to the variable name MXSLAE.

To increase the parameter on a global basis edit the LUSAS installation file named lusas.str using a standard text editor such as Notepad.  This file can be found in the location C:\Lusas15x\Programs\Config folder or C:\ProgramData\Lusas16x\x86 folder for V16 onwards.  

Add the line

mxslae=n

between the lines system and exit where n is equal to the number of adjacent elements permitted.


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