Contents Namespaces | Ansys.ACT.Automation.Mechanical Namespace | Solution | Print page AddMiddlePrincipalStress()Creates a new MiddlePrincipalStressDeclaration Syntaxpublic virtual MiddlePrincipalStress AddMiddlePrincipalStress() « AddMiddlePrincipalElasticStrain() AddMiddlePrincipalThermalStrain() »