Bulk Data Entry Defines non-structural mass as the sum of the sets listed.


(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
NSMADD SID S1 S2 S3 S4 S5 S6 S7  
  S8 S9 S10 etc.          


(1) (2) (3) (4) (5) (6) (7) (8) (9) (10)
NSMADD 4 100 200            


Field Contents SI Unit Example
SID Non-structural mass set identification number.

No default (Integer > 0)

S# Identification number of nonstructural mass sets defined via NSM, NSM1, NSML, and NSML1 entries.

No default (Integer > 0, SIDS#)



  1. Refer to Non-structural Mass in the User Guide for more information on the use of this card.
  2. Non-structural mass in this format must be selected by the NSM (Subcase Information Entry) Subcase Information selector.
  3. No S# may be the identification number of a non-structural mass set defined by another NSMADD entry.
  4. NSMADD entries take precedence over NSM, NSML, NSM1 or NSML1 entries. If both have the same SID, only the NSMADD entry will be used.
  5. The value of the non-structural mass does not change during Topology Optimization.