Use the MeshModel command to define a mesh without midside nodes.
strCmdForMeshModel = "<MeshModel AnalysisID=""<Analysis ID>"" HasContiniousMeshing=""<Continuous Meshing?>"" HasMeshTable=""<Has mesh table?>"" ElementSize=""<Element size>[m]"" Tolerance=""<Tolerance>[m]"" ElementOrder=""<Element Order>"" HasRefinmentRatio=""<Has Refinement Ratio?>"" RefinmentRatio=""<Refinement Ratio>"" MinTriangleAngle=""<Min Triangle Angle>[rad]"" MaxTriangleAngle=""<Max Triangle Angle>[rad]"" MaxElementGrowthRate=""<Max Element Growth Rate>"" SuppressShortFeature=""<Suppress Short Features>"" MinFeatureAngle=""<MinFeatureAngle>[rad]"" HasProjectMidsideNodes=""0""/>"
Available element orders include the following:
| Element Order | Value |
| Linear | 2 |
| Parabolic | 3 |
For example:
strCmdForMeshModel = "<MeshModel AnalysisID=""1"" HasContiniousMeshing=""0"" HasMeshTable=""0"" ElementSize=""0.0012700000[m]"" Tolerance=""0.0000000203[m]"" ElementOrder=""3"" HasRefinmentRatio=""1"" RefinmentRatio="""" MinTriangleAngle=""[rad]"" MaxTriangleAngle=""[rad]"" MaxElementGrowthRate="""" SuppressShortFeature="""" MinFeatureAngle=""[rad]"" HasProjectMidsideNodes=""0""/>"