Since the first release of d3View, there have been many incremental but bold steps that were taken to tackle the problem of simulation data management especially related to LS-DYNA. I am proud to announce the next generation of simulation data manager that will be available shortly to worldwide users in the form of d3View v2.0…

Attached is a simple code that I wrote a while back to convert a force-deflection/engineering-stress_strain/true_stress_strain curve to effective stress vs effective strain curve. The input is a simple LS-DYNA valid keyword file with *define_curve keyword. Its not an elegant code but works in most cases. A sample curve is also included. I am working on…

Initial velocity is always specified to a single node and can carry only one value. Multiple initial velocity definitions for the same node will always use the last encountered value. To illustrate this, if we have nodes N1,N2 and N3 and we define a initial velocity for all nodes to be ‘V1’ followed by N2…

In an iterative simulation process, the main problem or difficulty is to use the existing results to understand its dependency on certain variables (design or just numerical). This difficulty, often causes us to rerun the simulations in a more controlled environment. Let me illustrate this with a simple problem in which we have some v1-v10…

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…

I 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…

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

Sven 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 of…