arvutuslik normaalmoone, iseloomustamaks ühe skalaarse arvuna suvalist deformatsiooniseisundit (joon-, tasapinnalist ja ruumilist deformatsiooniseisundit) (vrd nihkemoondeintensiivsus), the scalar strain conjugate to effective stress defined in such a manner that the product of the effective stress and the effective strain increment is equal to the increment in imposed work during a deformation process (compare: effective shear strain)