Open AccessAnti-buckling design of cylindrical shells by local surface nanocrystallization
Author(s) -
Xinsheng Xü,
Zhen Zhao,
C.W. Lim,
W Wang,
Zeng Bo Lian,
Zhenhuan Zhou
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/531/1/012069
Subject(s) - buckling , materials science , surface (topology) , shell (structure) , oblique case , composite material , structural engineering , geometry , mathematics , engineering , linguistics , philosophy
A novel surface modification method, namely the surface nanocrystallization technology, is introduced to enhance the anti–buckling performance of the metal cylindrical shells under axial impact loading. The effects of local nanocrystallization layouts are explored by evaluating the critical buckling loads of four local nanocrystallization layouts including the local circumferential stripes (LCS), local axial stripes (LAS), spaced latticed blocks (SLB) and oblique latticed blocks (OLB). Numercial results show that, compared to the untreated cylindrical shells, the critical buckling loads of the local nanocrystallized ones are significantly improved by the local nanocrystallization treatment. The critical buckling loads for the LAS design is improved by 80%. It is concluded that the local nanocrystallization treatment is a very promising method to design and manufacture the metal cylindrical shells with high anti-buckling performance.