包含織構(gòu)系數(shù)的任意應(yīng)力狀態(tài)下六角晶粒正交板材屈服函數(shù)理論研究
[Abstract]:In engineering, Hosford yield function is often used to describe the yield and plastic deformation behavior of orthogonal metal sheet. However, it requires that the three principal stresses of the plate must be coaxial with the orthogonal axis of the plate. In view of this shortcoming, by introducing the direction function, the relationship between the direction function and the texture coefficient is analyzed, and the yield function of hexagonal grain orthogonal plate under arbitrary stress state with texture coefficient is given. The yield function consists of five material constants and five texture coefficients, which is more general than the Hosford yield function. The expressions of anisotropy index r, yield stress and texture coefficient of sheet metal at different angles are derived by using the new yield function. The results show that the new yield function is a good fit for describing the plastic deformation and yield strength of the material. It provides a basis for the analysis of the mechanical properties of metal sheet.
【作者單位】: 南昌大學(xué)工程力學(xué)實(shí)驗(yàn)中心;東華理工大學(xué)建筑工程學(xué)院;東華理工大學(xué)核工程與地球物理學(xué)院;
【基金】:江西省自然科學(xué)基金資助項(xiàng)目(20161BAB216142,20171BAB202028) 江西省教育廳科學(xué)技術(shù)研究項(xiàng)目(GJJ150575) 核技術(shù)應(yīng)用教育部工程研究中心開放基金項(xiàng)目(HJSJYB2016-9)
【分類號(hào)】:TG146.23
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