Method, apparatus and program product for predicting multiaxial fatigue life

An electronic device, comprising:

• a memory, storing a computer program thereon;
• and
• a processor, configured to execute the computer program in the memory so as to:
• obtain a first temperature rise value of a to-be-tested material in a first cycle;
• determine first inherent dissipated energy of the to-be-tested material in the first cycle according to the first temperature rise value and a time constant;
• determine a multiaxial fatigue life of the to-be-tested material according to a first proportional value, the first inherent dissipated energy, axial fatigue test parameters and torsional fatigue test parameters;
• wherein the first proportional value is a ratio of an axial strain amplitude to a torsional strain amplitude of a multiaxial fatigue test, the axial fatigue test parameters are configured to represent an axial fatigue resistance of the to-be-tested material, and the torsional fatigue test parameters are configured to represent a torsional fatigue resistance of the to-be-tested material.

A non-transitory computer readable storage medium, storing a computer program thereupon, when the computer program in the storage medium is executed by a processor, the processor is caused to:

• obtain a first temperature rise value of a to-be-tested material in a first cycle;
• determine first inherent dissipated energy of the to-be-tested material in the first cycle according to the first temperature rise value and a time constant;
• determine a multiaxial fatigue life of the to-be-tested material according to a first proportional value, the first inherent dissipated energy, axial fatigue test parameters and torsional fatigue test parameters;
• wherein the first proportional value is a ratio of an axial strain amplitude to a torsional strain amplitude of a multiaxial fatigue test, the axial fatigue test parameters are configured to represent an axial fatigue resistance of the to-be-tested material, and the torsional fatigue test parameters are configured to represent a torsional fatigue resistance of the to-be-tested material.