Research of Construction Elements of Structure-inhomogeneous Materials

International Multi-Conference on Industrial Engineering and Modern technologies

Arzamaskova, L.M.^1 ; Evdokimov, E.E.^1 ; Konovalov, O.V.^1

Institute of Architecture and Civil Engineering, Volgograd State Technical University, 1 Akademicheskaya Street, Volgograd

400074, Russia^1

关键词: Construction elements;    Construction practice;    Elastic properties;    Heterogeneous materials;    Inhomogeneous materials;    Isotropic body;    Microstructural aspects;    Minimum volumes;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/463/3/032074/pdf
DOI  :  10.1088/1757-899X/463/3/032074

来源: IOP

【 摘 要 】

The paper concentrates on strain-stress state research in construction elements of structurally heterogeneous materials which is of current importance. Classical concepts of solid, homogeneous, isotropic, linearly elastic body do not suit the construction practice, as nearly all materials used in construction and technics are structurally heterogeneous. Present article deals with the most typical structurally heterogeneous materials - polycrystalline materials. Finite element model of structurally heterogeneous body - polycrystal is developed. The problem of determination of body minimum volume, which could be endued with averaged properties by averaging elastic properties, is solved. It allows analyzing structurally heterogeneous body at different volumes. Stress concentration is investigated for small-scale plates with circular or ellipse holes and with various stress states considering microstructural aspects of stress concentration. It is shown, that coefficients of stress concentration depending on anisotropy of elastic properties can have values, which considerably differ from values for isotropic body.