CONM2 mass unit updation

Udhayakumar Ramasamy

Hello All,

 

I am doing LS Dyna to Nastran/Optistruct conversion job (Modal analysis set up only). I want to convert the CONM2 (mass)elements units (ton --> kg). Is there any easy and less time consuming way to do that (using Macro etc.,)?

 

Since this original LS Dyna version is created using some other software, the mass distribution is varying among the nodes (which means each node have different additional mass), I cannot able to update the mass elements with 1d--> masses-->update option (also there are more than 1000 mass elements)

 

Thanks,

Udhay

tinh

Hi it's very easy

file updatemassunit.tcl :

 

*createmarkpanel elems 1 'Select mass elements:'

*createmark elems 2 'by config' mass

*markintersection elems 1 elems 2

if {[set Total [hm_marklength elems 1]]} {tk_messageBox -message 'Mass not selected' -icon error; return}

*entityhighlighting 0

hm_blockmessages 1

foreach MassId [hm_getmark elems 1] {

   hm_usermessage 'Updating [incr Count]/$Total ...'

   set Mass [hm_getentityvalue elems $MassId mass 0]

   set Mass [expr {1000*$Mass}]

   *createmark elems 1 $MassId

   *massmagnitudeupdate 1 $Mass 0

}

*entityhighlighting 1

hm_blockmessages 0