A METHOD OF DEVELOPMENT OF FATIGUE ASSESSMENT OF WELDING JOINT

摘要

The fatigue strength evaluation method using a genetic algorithm technique for determining constants necessary for the material of various materials injury model is disclosed. ; Fatigue strength evaluation method according to the present invention is to derive the final impairment model based on a comparison with the standard mechanical properties only after the input of basic data, configure the material by using this injury model, uniaxial tension test results. In addition, the steps constituting the basis for the model material is damaged, then the input standard mechanical properties in the inference engine, and, inferring the material constant for damage to the engine, and verifies a material constant for the material damage evaluation. And, by using a standard deviation analysis determining the fatigue life of the related fatigue characteristics, and constitutes the basis for the material injury model optimization using inference model and database. ; Fatigue strength of steel welded joints, mechanical damage, genetic algorithm