Accession Number : ADA110805


Title :   Elastic-Plastic Deformation in Cracked Solids and Ductile Fracture Criterion.


Descriptive Note : Final rept. 1 Jun 78-31 Dec 81,


Corporate Author : SYRACUSE UNIV N Y DEPT OF CHEMICAL ENGINEERING AND MATERIALS SCIENCE


Personal Author(s) : Liu,H W


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a110805.pdf


Report Date : Jan 1982


Pagination or Media Count : 74


Abstract : The main objectives of the program are to study crack tip stresses and crack tip deformation, and to use the findings of these studies to investigate the fractures of ductile and tough materials. Crack tip displacement and strain fields were measured with the moire method, and crack tip stress, displacement, and strain fields were calculated with the finite elements method. The measured displacement and strain fields agree well with the finite element calculations. The results were used to develop the direct correspondence method of evaluating fracture toughness of ductile tough materials and were also to analyze deformation mode of fatigue crack growth. (Author)


Descriptors :   *PLASTIC DEFORMATION , *ELASTIC PROPERTIES , *FRACTURE(MECHANICS) , *DUCTILE BRITTLE TRANSITION , STRESS STRAIN RELATIONS , LINEAR SYSTEMS , REQUIREMENTS , COMPUTATIONS , FINITE ELEMENT ANALYSIS , DISPLACEMENT , STEEL , CRACK PROPAGATION , DEFECTS(MATERIALS) , BRITTLENESS , HIGH STRENGTH , MATHEMATICAL ANALYSIS , FATIGUE(MECHANICS) , YIELD STRENGTH , CORRELATION TECHNIQUES , POISSON RATIO , MARTENSITE , J INTEGRALS


Subject Categories : Statistics and Probability
      Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE