COMSOL 6.3 - Solid Mechanics Material Properties: Fatigue Module

Table 9-26: Elastoplastic and Fatigue Behavior Material Properties.
Property Group and Property	Name/Variable	SI Unit
Elastoplastic material > Ramberg–Osgood
Cyclic hardening coefficient	K_ROcyclic	Pa
Cyclic hardening coefficient	n_ROcyclic	1
Fatigue Behavior > Energy-Based
Darveaux
Crack initiation energy coefficient	K1_Darveaux	1
Crack initiation energy exponent	k2_Darveaux	1
Crack propagation energy coefficient	K3_Darveaux	m
Crack propagation energy exponent	k4_Darveaux	1
Reference energy density	Wref_Darveaux	J/m3
Morrow
Fatigue energy coefficient	Wf_Morrow	J/m3
Fatigue energy exponent	m_Morrow	1
Fatigue Behavior > Fatigue Behavior > Approximate S-N Curve
Transition stress	sigmat	Pa
Transition life	Nt	1
Endurance life	Ne	1
Fatigue Behavior > General
Endurance limit	sigmae	Pa
Fatigue Behavior > Strain-Based
Coffin–Manson
Fatigue ductility coefficient	epsilonf_CM	1
Fatigue ductility exponent	c_CM	1
Shear fatigue ductility coefficient	gammaf_CM	1
Shear fatigue ductility exponent	cgamma_CM	1
Fatemi–Socie
Normal stress sensitivity coefficient	k_FS	1
Wang–Brown
Normal stress sensitivity coefficient	S_WB	1
Fatigue Behavior > Stress-Based
Basquin
Fatigue strength coefficient	sigmaf_Basquin	Pa
Fatigue strength exponent	b_Basquin	1
Shear fatigue strength coefficient	tauf_Basquin	Pa
Shear fatigue strength exponent	bgamma_Basquin	1
Findley
Normal stress sensitivity coefficient	k_Findley	1
Limit factor	f_Findley	Pa
Matake
Normal stress sensitivity coefficient	k_Matake	1
Limit factor	f_Matake	Pa
Normal Stress
Limit factor	f_NormalStress	Pa
DaNg Van
Hydrostatic stress sensitivity coefficient	a_DangVan	1
Limit factor	b_DangVan	Pa