Solid Elements Equivalents

[Richard the lion heart]

Hello All,

I created a mesh for a LS-Dyna model outside of LS-Prepost. I realized the solid elements are unlike what solid elements  are available in LS-Dyna, for example, the brick elements generated by the mesher are 20 noded not 8. In this instance, I can easily remove the intermediate nodes and arrive at 8 noded elements that conforms to LS-Dyna. However, I am not so sure about the elements such as:

1. A 15 node wedge

2. A 10 node tetrahedron

3. A 13 node pyramid

The LS-Dyna do not have any similar elements or are yet to be implemented. I wonder if I could convert this elements to 8 node solids by repeating the nodes and how the solution might turn out.

[James M. Kennedy]

Dear WFE,

 

higher order elements

 

Teng, H., "Recent Advances on Higher Order 27-Node Hexahedral Elements in LS-DYNA", 14th International LS-DYNA Users Conference, Dearborn, Michigan, June, 2016.

 

http://www.dynalook.com/14th-international-ls-dyna-conference/simulation/recent-advances-on-higher-order-27-node-hexahedral-element-in-ls-dyna-r

 

Borrvall, T., Benson, D., and Teng, H., "An Implicit Study of Higher Order Elements in LS-DYNA", 11th European LS-DYNA Users Conference, Salzburg, Austria, May, 2017.

 

https://www.dynalook.com/11th-european-ls-dyna-conference/implicit-mechanics/an-implicit-study-of-high-order-elements-in-ls-dyna

 

Schmied, C., and Erhart, T., "Updated Review of Solid Element Formulations in LS-DYNA: Properties, Limits, Advantages, Disadvantages", 15th German LS-DYNA Forum, Bamberg, Germany, October, 2018.

 

https://www.dynamore.de/en/downloads/papers/2018-ls-dyna-forum/papers2018/wednesday-17th-october-2018/simulation-isogeometric-and-fe-technology/a-study-on-the-new-higher-order-solid-elements-in-ls-dyna

 

Sincerely,

James M. Kennedy

KBS2 Inc.

February 10, 2022

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[Richard the lion heart]

Thank you Jim!