Power hardening model

The power hardening cyclic stress-strain equation used in the durability solver can be written as:

	if
	if

where

• is the stress amplitude.

• is the strain amplitude.

• νe is Poisson's ratio.

• r is the stress biaxial ratio.

• E is the modulus of elasticity.

• n is the strain hardening coefficient material property.

• H is the cyclic strength coefficient material property.

• σ0 is the cyclic yield strength given by the following equation:

	Ramberg-Osgood model
Power hardening model
Linear model
Monotonic curve
Cyclic yield
Monotonic yield

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Understanding cyclic stress-strain behavior

Ramberg-Osgood model

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Power hardening model, Simcenter 3D 2021.1 Series

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