Durability Strain Gage Rosette Analyzer dialog box — Options tab

Axis Search
Axis Direction Search Method	Specifies the method that the durability solver uses to search for the effective primary loading direction.Critical Plane identifies an effective primary loading direction and resolves the strain gage leg instantaneous data into the identified direction. Depending on the method that you specify in the Critical Plane Option list, the software finds the instantaneous primary effective loading direction as follows:When you select Maximum Shear, the primary loading direction is the orientation of the maximum shear direction at the critical time instant. The critical time instant is the time when the instantaneous maximum shear value is the largest.When you select Maximum Principal, the primary loading direction is the orientation of the maximum principal direction at the critical time instant. The critical time instant is the time when the instantaneous maximum principal value is the largest.Principal Axis parses the strain gage leg history and identifies the effective primary loading direction using the statistical distribution of the orientation of the principal axes. You can modify the value of the search angle in the Search Resolution box.See Fatigue evaluation on element free faces, Critical plane approach, and Principal axes approach for more information
Output Requests
Biaxiality Ratio History	Writes the time history of the biaxiality ratio to the target AFU file. The biaxiality ratio is defined as the ratio of the strain component that is transverse to the effective primary loading direction, to the strain component in the effective primary loading direction.
Use Lateral Loading Ratio	Writes the value for the lateral loading ratio to the AFU records that store the stress and strain functions. The lateral loading ratio is written to the User Value field in the AFU record. The lateral loading ratio is the gradient of the straight line fit (3) of a pair of points that are composed of the strain component in the instantaneous primary loading direction (1) and the strain component in the instantaneous transverse direction (2).The lateral loading ratio is sometimes called the effective biaxiality ratio.
Strain Type Requests	Writes the selected strain functions to the target AFU file.
Stress Type Requests	Writes the selected stress functions to the target AFU file.When you request any stress functions, you must specify the material for the base model on which the strain gage is loaded, using the Choose Material option. The software uses the values for the Poisson’s ratio and the Young’s modulus to calculate stress functions from strain gage leg data.
Principal Angle Type Requests	Writes the selected time history of the orientation of the principal direction to the target AFU file.

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Durability Strain Gage Rosette Analyzer dialog box — Options tab, Simcenter 3D 2021.1 Series

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