Reply To: MAT_LAMINATED_GLASS

[Reno Genest]

 

 

Hello Youngjin,

Because there is only one density, I would put the overall density of the composite glass; that is, take the mass of the laminated glass (include all glass and polymer layers) and divide it by the volume of the laminated glass. Make sure that the mass of the laminated glass is correct at the end in your model. 

Note that *MAT_032 is an old way of modeling laminated glass. You could use *PART_COMPOSITE with shell elements and a material model for glass and also another material model for the polymer. Have a look at the LS-DYNA User Manual Vol I for more information on *PART_COMPOSITE:

https://lsdyna.ansys.com/manuals/

Here is more information from our knowledge database:

”Because mixing of different materials within a shell is quite easy with *part_composite, *mat_laminated_glass is almost obsolete except perhaps that it allows the glass to fail while the polymer remains intact and continues to stretch. Different material IDs and even different material types can now be combined in a single shell using the straightforward command *part_composite. This command can be substituted for *part, *section_shell, and *integration_shell. Glass and PVB would each have it’s own *mat data, e.g., mat_001 or mat_024. *Part_composite says which layer gets which material.”

Reno.