Here is one of the simplest set up of a tiebreak test problem that was developed earlier. You can test the tiebreak under any load case by simply including the appropriate included file.
The main file is named “main.k”.
tiebreak_example.tar
Thanks to Brian Wainscott, LSTC, who was instrumental in helping to understand some important aspects of this [...]
Archive for November, 2007
*DEFINE_CONTACT_VOLUME for *SET_{OPTION}_GENERAL
Published by November 19th, 2007 in LS-DYNA Bytes. 0 CommentsI am glad to announce that the latest version of LS-DYNA will support the use of *DEFINE_CONTACT_VOLUME in any *SET_{OPTION}_GENERAL keyword. As most of you know, *DEFINE_CONTACT_VOLUME offers many advantages over *DEFINE_BOX such as definition in a local system and multiple shapes such as sphere, ellipse, box, and cylinder.
With this support, my earlier post on [...]
Recently, I came across this MIT Open Course Ware and thought it might be useful for others as well. MIT has made more than 1800 courses available at no cost.
Recently, I was teaching a class for Black & Decker, and one of the students, Kevin, was taking notes that I thought captured my lecture quite well.
I asked him to provide a scanned copy which is included here for others who may find it helpful.
notes.ppt
2007 Japan LS-DYNA Conference Summary By Sven Holcombe
Published by November 9th, 2007 in LS-DYNA Bytes. 2 CommentsSven Holcombe of JARI sent us this great presentation summary that covers some of the paper presentation at the 2007 Japan LS-DYNA Conference. Its has been a lot of work for Sven I am sure and its greatly appreciated for his effort.
Thanks a lot, Sven.
(I removed the preview since the loading time [...]
Membrane Thinning in Shell Elements
Published by November 4th, 2007 in LS-DYNA Bytes and LS-DYNA Elements. 0 CommentsIn 2D shell elements, the stress in the normal (fiber) direction is iteratively reduced to zero to meet the plane-stress condition. The strains are however nonzero in the fiber direction and will be linear though the thickness. Under membrane straining, LS-DYNA allows an option to account for the reduction in the shell thickness in the [...]
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