Open AccessThe Critical Buckling Load of Column under Axial Compressive Force
Author(s) -
Xin Kang,
Xin Guo,
Qilei Wang,
Qiang Liang,
Fang Zhang
Publication year - 2020
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/794/1/012075
Subject(s) - buckling , critical load , structural engineering , displacement (psychology) , finite element method , foundation (evidence) , buckle , stress (linguistics) , pipeline (software) , pipeline transport , materials science , mechanics , geotechnical engineering , geology , engineering , physics , mechanical engineering , psychology , linguistics , philosophy , history , archaeology , psychotherapist
Recent buckling failures of pipelines in permafrost regions reveal that buckling phenomenon is related to the initial displacement of the pipeline due to frost heave. The aim of this study is to investigate whether this relation influent widely the columns applied axial compressive forces. An apparatus was constructed to measure the loads applied on the specimens and the displacements of the specimens. The curve between the two measurement results are shown to lead to an accurate determination of the critical buckling load. Furthermore, a simulation calculation was conducted through finite element method, the numerical results are consistent with the experiment ones. We found that the critical buckling load is inversely correlated to the initial displacement, and further fitting the curves leads to a linear relation.