Buckling Analysis with FEA  

Oleh:

Kurowski, Paul M. ; Kurowski, Tom P.

Jenis: Article from Bulletin/Magazine - ilmiah internasional
Dalam koleksi: Machine Design (Soft Copy ada dalam http://search.proquest.com/) vol. 83 no. 3 (Feb. 2011), page 36-40.
Topik: linear finite-element; buckling; design

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: MM44.63 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

LinIn many design projects, engineers must calculate the factor of safety (FOS) to ensure the design will withstand the expected loadings. All too often they associate structural failure only with yielding and are satisfied when design analysis shows a sufficient FOS related to yield. However, yielding is not the only mode of failure. Certain problems tend to arise in buckling analysis performed with finite-element analysis. These problems are best presented in the context of two other failure modes: excessive displacements and yielding. Linear-buckling analysis calculates buckling load magnitudes that cause buckling and associated buckling modes. As a consequence of discretization error, linear buckling analysis overestimates the buckling load and provides nonconservative results. As with any other nonlinear analysis, nonlinear-buckling analysis requires that a load be applied gradually in multiple steps rather than in one step as in a linear analysis. Although the load-control method is used in most types of nonlinear analyses, it would be difficult to implement in a buckling analysis.

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