Axis Search dialog box

Option	Description
Name	Sets the name of the axis search durability objects. The durability object name is displayed in the event dialog boxes.
Stress Axis Method	Specifies how the primary loading direction is determined. The primary loading direction, also called the stress axis direction, is the most likely direction along which cracks would initiate.Select Element Face to let the durability solver find the critical loading path of the structure. See Fatigue evaluation on element free faces for more information.Select Nodal (Uni-Axial) to let you specify the stress axis direction. This option does not support the strain life maximum shear fatigue life criterion.
Element Face Stress Axis
Appears when Stress Axis Method is set to Element Face.
Element Face Stress Axis	Specifies whether the durability solver performs uniaxial or biaxial fatigue evaluation.Select Uni-Axial to ignore stresses or strains acting perpendicularly to the crack propagation direction.Select Bi-Axial to let the stresses or strains acting perpendicularly to the crack propagation direction contribute to the calculation of crack growth. See Biaxial fatigue evaluation on element free faces for more information.
Stress Axis Direction Search Method	Specifies the method that the durability solver uses to search for the stress axis direction.Select Critical Plane to let the solver use the maximum shear plane in the stress history as the primary loading direction. This method does not support 1D elements. See Critical plane approach for more information.Select Maximum Damage to let the solver calculate damage in every direction on element free faces to determine the primary loading direction. See Maximum damage approach for more information.Select Principal Axis to let the solver use a statistical approach to identify the primary loading direction on element free faces. See Principal axes approach for more information.
Search Resolution	Appears when Stress Axis Direction Search Method is set to Maximum Damage or Principal Axis.Specifies the search resolution for the primary loading direction. For the maximum damage method, the search resolution defines the radius of search for the axis of maximum damage. For the principal axis method, the search resolution defines the range of search bins.
Beam Stress	Available when Element Face Stress Axis is set to Uni-Axial.Appears when Stress Axis Direction Search Method is set to Maximum Damage or Principal Axis.Specifies the type of stress that acts on the beam elements.Select Axial to indicate that only axial stresses are considered.Select Torsional to indicate that only torsional stresses are considered.Select None to exclude beam elements from the durability analysis. This option does not support 1D elements.In the biaxial stress axis method, both axial and torsional stresses are always included in the durability evaluation. See Biaxial fatigue evaluation for beam elements for more information.
Nodal (Uni-Axial) Stress Axis
Appears when Stress Axis Method is set to Nodal (Uni-Axial).
Stress Direction	Lets you select the stress direction.
Reverse Direction	Reverses the stress direction that you defined.
Node Element Option	Specifies whether the stresses or strains are taken from solid elements or from shell elements.Note: Make sure that you have stress or strain results for the element type that you selected.
Shell Region	Available when Node Element Option is set to Shells.Controls whether the shell stresses or strains are taken from the bottom, middle, or top region of the shell.

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Axis Search dialog box, Simcenter 3D 2021.1 Series

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