Model of fuzzy estimation of mechanical stress concentration for aerospace and industrial flat structures with polygonal holes of uncertain curvature at rounded corner points

International Workshop "Advanced Technologies in Material Science, Mechanical and Automation Engineering – MIP: Engineering – 2019"

材料科学;机械制造;原子能学

Vyskub, V.G.^1 ; Mutina, E.I.^2 ; Storozhev, S.V.^3 ; Storozhev, V.I.^4

Research Institute-Republican Research Scientific-Consulting Center of Expertise, 13, p.1, Antonov-Ovseenko street, Moscow

123317, Russia^1

Moscow State University of Technology 'STANKIN', 3a, Vadkovsky lane, Moscow

127055, Russia^2

Donbass National Academy of Civil Engineering and Architecture, 2, Derzhavina street, Makeyevka, DPR

286123, Ukraine^3

Donetsk National University, 24, University street, Donetsk, DPR

283001, Ukraine^4

关键词: Algorithm of fuzzy;    Applied research;    Corner point;    Flat structures;    Fuzzy estimation;    Mechanical stress;    Rounded corners;    Uncertainty factors;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/537/2/022013/pdf
DOI  :  10.1088/1757-899X/537/2/022013

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The problem of uncertainty factor management in the description of mechanical stress nearby hatchways of multilateral form with rounded corners of fuzzy curvature in stretch thin plate is considered. Numerical and analytic methodology based on heuristical principle application of extension to transition to fuzzy set arguments in special analytical representations for estimated factors of stress concentration is proposed. Algorithm of fuzzy interval parameter spread of curve in corner points is described. Usage of proposed methodology in theoretical and applied researches on integrity problems of multiply connected thin-walled structure elements is characterized.