Warning Messages
Warnings by WeldFEM are non critical messages. In general, they don't require any action from the user, yet it is recommended to solve the issue causing the warning before assessing the welds with WeldFEM.
A list of possible warning messages are listed in this chapter. They can be found quickly by searching for their message.
Improper FE-Model
Implausible rigid connections found in the FE-model. |
|
Cause |
The FE-model contains rigid connections that are problematic for a correct assessment of the welds with WeldFEM. |
Solution |
Please revise the FE-mesh at the indicated locations. Informations on how to mesh WeldFEM compliant rigid connections is given in Chapter WeldFEM Compliant Meshing. Problematic elements or element connections are gathered in specific Femap groups. |
Consequence If Ignored |
The consequences of assessing welds, modelled with implausible rigid connections can vary. Yet, in most cases WeldFEM will not detect weld elements correctly, which could lead to not assessing every element directly at the weld, as shown in chapter Weld Detection Considerations. |
Coarse mesh detected. |
|
Cause |
The main cause for a coarse mesh to be detected by WeldFEM is that the edge length perpendicular to the weld of the element directly at the weld junction is too large. |
Solution |
The FE-mesh at the weld junction is too coarse. Please consider re-meshing the area close to the weld junctions of concern. For recommendations how to solve the issue, see chapter Element Size Recommendations. Problematic elements or element connections are gathered in specific Femap groups. |
Consequence If Ignored |
For coarse FE-meshes that render only one element per evaluation area, the assessment is still performed and utilisation factors are calculated. These utilisation factors could possibly render inaccurate results.
|
Fine mesh detected. |
|
Cause |
The cause for a fine mesh to be detected by WeldFEM is that the maximum recursive depth of the weld detecting algorithm has been reached. |
Solution |
The FE-mesh at the weld junction is too fine. Please consider re-meshing the area close to the weld junctions of concern. For recommendations how to solve the issue, see chapter Element Size Recommendations. Problematic elements or element connections are gathered in specific Femap groups. |
Consequence If Ignored |
The assessment of the weld is still performed and utilisation factors are calculated. These utilisation factors could possibly render inaccurate results, since not all elements inside the evaluation range have been detected and therefore, information is missing. This is valid for both types of assessment, the nominal stress concept and the structural stress concept. |