Error - Member/Element cannot be a member of more than 10 groups. Why is this error reported?
This error message is reported in the Output file if any node/member/plate is included in more than 10 different groups (Groups are created in Utilities -> Groups menu).
This limit can be increased by adding the SET GROUP DUPLICATES command in the input file before the JOINT COORDINATES line. SET GROUP DUPLICATES followed by an integer value which is used to specify the number of groups to which one model entity (node, member, plate) may belong. Must be in the range of 4 to 100, inclusive. The default value is 10 groups. So if you want to have the same member in, for example, 18 groups, then you can use the command SET GROUP DUPLICATES 18.