How to judge the ma...
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How to judge the mass scaling results  


Eminent Member
Joined: 9 months ago
Posts: 38
April 19, 2020 4:37 am  

Hi all, could you tell me how to determine the mass scaling results. Are there any indicators like kinetic energy, added mass etc. that can be used for determining whether the results are correct or not?


Negative Volume
Reputable Member Admin
Joined: 2 years ago
Posts: 285
April 30, 2020 2:04 pm  

Hi @csuznxg

Most of the time there are thresholds for percent mass increase depending on your application. A general rule for LS-Dyna that I have used is to keep added mass below 5% mass added.

csuznxg liked
Active Member
Joined: 10 months ago
Posts: 14
May 20, 2020 3:07 am  

hi in GLSTAT : 16 ,17 , 18 option helps you to judge the mass added on the system and its effect 

16 : step size : this is should help you understand the analysis behavior after mass scaling

17 : added mass : care should be taken , depends on application of analysis.

18: % increase in mass : <5% is better for automotive and <1% for aero application