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- W2912455180 abstract "Cold-formed steel members were composed of thin plate elements thus the members were easily occurred the local buckling under compression. The local buckling strength significantly affects the maximum strength of the members, therefore providing an accurate evaluation method for the local buckling strength is one of the key issues in their design. The conventional design method was assumed that the plate elements behave as a simply supported plate element. However, the longitudinal edges of plate elements were restrained their rotation by adjacent plate elements, and this restraining might lead an increase of local buckling strength of cold formed members both in the case of elastic and inelastic. In this paper, we investigated the restraining effect on rectangular section under combined compression and bending condition. First, we conducted the eigenvalue analysis by finite strip method. Through the comparison between numerical analysis results and theoretical results which assumed simply supported condition, we found that the restraining effect was appeared not only under axially compressed loading condition but also under combined loading condition. Then, we considered evaluating the elastic local buckling strength under combined compression and bending condition by the equations which we had developed for axially compressed members. Through the comparison between eigenvalue analysis results and calculated results, we found that the elastic local buckling strength of rectangular sections under bending and compression could be evaluate the developed equations accurately with a tiny modification. Finally, we conducted a finite element analysis to investigate the restraining effect on inelastic strength (i.e. maximum strength) of rectangular section members. The maximum strength of rectangular sections was mostly higher than the nominal strength which assumed the boundary condition as a simply supported condition. Furthermore, we re-evaluated their maximum strength with a consideration of restraining. The re-evaluated results were agreed well with the numerical analyses, thus we found that the maximum strength of rectangular sections was evaluated accurately to consider the restraining effect between adjacent plate elements compared with the conventional method which regard the plate elements as a simply supported plate." @default.
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- W2912455180 date "2019-01-01" @default.
- W2912455180 modified "2023-10-14" @default.
- W2912455180 title "ELASTIC LOCAL BUCKLING STRENGTH AND MAXIMUM STRENGTH OF RECTANGULAR SECTION MEMBERS WHICH WERE LOADED COMPRESSION AND BENDING" @default.
- W2912455180 cites W2339831707 @default.
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- W2912455180 doi "https://doi.org/10.3130/aijs.84.97" @default.
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