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October 17, 2024 at 4:55 amFernando TorresSubscriber
Hi dear community, I'm interested in viewing crack-patterns for a low velocity impact of a multilayered glass. Simulation has been normally terminated. MAT_280 has been used for glass layers with Rankine failure (default), and MAT_076 has been used for interlayers.
I've tried to use some cards like q = d3crack, or Q=crack and inside keyword editor I've also opted for *binaryd3crack but I'm not sure if I've used those cards properly enough as the output crack file have 0 size on disk.
I'll be thanful if provided the "solution" or an alternate way out. Thanks :)
(using LS-Dyna stu, LS-prepost ) -
October 17, 2024 at 12:42 pmAlex R.Ansys Employee
Hello Fernando,
The D3CRACK file is usually used with Winfrith concrete model (*MAT_084/085).
For MAT_280 the crack directions are displayed ploting history variables. Please see Keyword Manual II - MAT_280 Remarks 9 and 11 https://lsdyna.ansys.com/manuals/.
History variables are explanied here: https://lsdyna.ansys.com/ale-history-variables/
Please see this paper about laminated glass modeling: https://www.dynalook.com/conferences/13th-european-ls-dyna-conference-2021/composites/tatarsky_arup.pdf/viewThank you,
Alex
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