6533b85bfe1ef96bd12bb46f

RESEARCH PRODUCT

Rapid evaluation of notch stress intensity factors using the peak stress method: Comparison of commercial finite element codes for a range of mesh patterns

Vigilio FontanariEugenio DragoniF. MoroniM. De AgostinisAntonio PantanoAlessandro ScattinaBernardo ZuccarelloGiovanni MeneghettiAndrea SpaggiariAlberto CampagnoloAlessandro U. ReboraMassimiliano AvalleMarco ColussiGiuseppe MaruloDavide CastagnettiGiuseppe Vincenzo MarannanoPasqualino CoriglianoFrancesco FrendoLuca Goglio

subject

Materials sciencefinite element (FE) analysinotch stress intensity factor (NSIF)02 engineering and technologyStress (mechanics)Settore ING-IND/14 - Progettazione Meccanica E Costruzione Di Macchine0203 mechanical engineeringFinite Element Analysis (FEA)Range (statistics)Mechanics of MaterialGeneral Materials Sciencecoarse mesh finite element (FE) analysis notch stress intensity factor (NSIF) peak stress method (PSM)Stress intensity factorMechanical Engineeringpeak stress method (PSM)Coarse mesh Finite Element Analysis (FEA) Notch Stress Intensity Factor (NSIF) Peak Stress Method (PSM)Coarse meshMechanicsfinite element (FE) analysis021001 nanoscience & nanotechnologyFinite element methodcoarse mesh; finite element (FE) analysis; notch stress intensity factor (NSIF); peak stress method (PSM);020303 mechanical engineering & transportsMethod comparisonCorse mesh finite element analysis peak stress method notch stress intensity factors.Mechanics of Materialscoarse mesh; finite element (FE) analysis; notch stress intensity factor (NSIF); peak stress method (PSM)Materials Science (all)coarse mesh0210 nano-technology

description

The peak stress method (PSM) is an engineering, finite element (FE)-oriented method to rapidly estimate the notch stress intensity factors by using the singular linear elastic peak stresses calculated from coarse FE analyses. The average element size adopted to generate the mesh pattern can be chosen arbitrarily within a given range. Originally, the PSM has been calibrated under pure mode I and pure mode II loadings by means of Ansys FE software. In the present contribution, a round robin between 10 Italian universities has been carried out to calibrate the PSM with 7 different commercial FE codes. To this aim, several two-dimensional mode I and mode II problems have been analysed independently by the participants. The obtained results have been used to calibrate the PSM for given stress analysis conditions in (i) FE software, (ii) element type and element formulation, (iii) mesh pattern, and (iv) criteria for stress extrapolation and principal stress analysis at FE nodes.

yearjournalcountryeditionlanguage
2018-01-01
10.1111/ffe.12751http://hdl.handle.net/11568/912132