scholarly journals The Initiation of Inhomogeneous Deformation in Thin Plate under Biaxial Tension

1982 ◽  
Vol 25 (204) ◽  
pp. 885-890
Author(s):  
Hiroshi KITAGAWA
Author(s):  
Сергей Владимирович Матвеев ◽  
Алёна Николаевна Матвеева

В работе рассматривается задача определения компонент напряжения при двуосном растяжении тонкой пластины из упругопластического материала. Пластина ослаблена круговым отверстием. В задаче рассматривается случай сопротивления отрыву, σ1 = σ2 = p, σ3 < p, p = const. Решение ищется методом разложения по малому параметру, аналогично работам [1-4]. В работе были получены выражения для определения компонент напряжения в упругой и пластической областях в первом приближении. The paper considers the problem of determining the stress components during biaxial tension of a thin plate made of elastoplastic material. The plate is weakened by the circular hole. The problem considers the case of separation resistance, σ = σ = p , σ < p , p = const . The solution is sought by the method of decomposition in a small parameter, similar to the works of [1-4]. In this work, expressions were obtained for determining the stress components in the elastic and plastic regions in the first approximation.


Author(s):  
D. L. Rohr ◽  
S. S. Hecker

As part of a comprehensive study of microstructural and mechanical response of metals to uniaxial and biaxial deformations, the development of substructure in 1100 A1 has been studied over a range of plastic strain for two stress states.Specimens of 1100 aluminum annealed at 350 C were tested in uniaxial (UT) and balanced biaxial tension (BBT) at room temperature to different strain levels. The biaxial specimens were produced by the in-plane punch stretching technique. Areas of known strain levels were prepared for TEM by lapping followed by jet electropolishing. All specimens were examined in a JEOL 200B run at 150 and 200 kV within 24 to 36 hours after testing.The development of the substructure with deformation is shown in Fig. 1 for both stress states. Initial deformation produces dislocation tangles, which form cell walls by 10% uniaxial deformation, and start to recover to form subgrains by 25%. The results of several hundred measurements of cell/subgrain sizes by a linear intercept technique are presented in Table I.


Author(s):  
Toshiyuki Miyazaki ◽  
Masatoshi Saito ◽  
Shunro Yoshioka ◽  
Tsuyoshi Tokunaga ◽  
Tadashi Misu ◽  
...  
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Author(s):  
Lei Su ◽  
Qing An ◽  
Jiejie Li ◽  
Lin Wang ◽  
Yuhang Zhang ◽  
...  

2021 ◽  
Vol 1155 (1) ◽  
pp. 012007
Author(s):  
I I Latypov ◽  
L A Bigaeva ◽  
G S Mukhametshina ◽  
N A Shaikhutdinova ◽  
A Y Gilev

Author(s):  
Nedunchezhian Srinivasan ◽  
R. Velmurugan ◽  
Lalith Kumar Bhaskar ◽  
Satish Kumar Singh ◽  
Bhanu Pant ◽  
...  

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