Proper mesh connectivity is created only if areasAre properly connected.Aglue/aovlap/aadd commands can be used to create connectivity between different areas.

fini/clear/filnam,aovlap/cwd,d:\temp/prep7/title,areaoverlapk,1,0,25,0k,2,100,25,0k,3,100,75,0k,4,0,75,0k,5,25,0,0k,6,75,0,0k,7,75,100,0k,8,25,100,0a,1,2,3,4a,5,6,7,8aoverlap,allet,1,plane42esize,7 amesh,allaclear,allaovlap,allamesh,all

Create two areas

k,1,0,25,0k,2,100,25,0k,3,100,75,0k,4,0,75,0k,5,25,0,0k,6,75,0,0k,7,75,100,0k,8,25,100,0a,1,2,3,4a,5,6,7,8

Observe no Key points created at each intersecting vertex. No common lines between two areas. Areas are not connected.

Created area mesh on unconnected areas

et,1,plane42esize,7 amesh,all

Observe unconnected mesh.

Clear mesh. Aovlap and then mesh it again

aclear,allaovlap,allamesh,all

Observe number of areas, keypoint at each corner, common line. Areas are now connected.

Observe alist. 1,2, areas are not there.

Observe missing line numbers in data base

It is good practice to compress data bases after bullian operations to remove empty spaces in data base.So new entities are created with seral numbers.However this should be used carefully and the command should be always included in stream without fail.The same stream will not work if these commands are missed.Compress the data bases and observed numbering.

Compare line numbers with previous plot.

llistObserve that lines are arranged serially but numbering is changed.

Observe that areas are arranged serially.

Observe that area numbers are changed. Areas arranged serially.

Create mesh after creating area connectivity. Observe connectivity in mesh.

amesh,all

Observe connectivity