Nodal assembling algorithm is defined as default setting in Tdyn. This algorithm is faster and more accurate than the standard FEM assembling in most of the cases. However it requires a nodal definition of the material properties and therefore its accuracy is reduced when there is a dramatic change of the properties between two adjacent materials as in this case. In those cases it is advisable to use the standard elemental assembling instead of the nodal one. This can be done changing the Tdyn preferences as shown in Figure 139.
Figure 140 Tdyn Preferences window |
Note that preferences are kept for future analysis. Therefore, once this analysis have been run, it is advisable to set the algorithm preferences to nodal assembling again.
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