LS Dyna

LS Dyna

Topics related to LS-DYNA, Autodyn, Explicit STR and more.

How to view “crack patterns” after solution

TAGGED: ,

    • Fernando Torres
      Subscriber

      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 )

    • Alex 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/view

      Thank you,

      Alex 

Viewing 1 reply thread
  • You must be logged in to reply to this topic.