Local and distortional buckling behaviour of back-to-back built-up aluminium alloy channel section columns

Local, Distortional, and Euler Buckling of Thin-Walled Columns

Open cross-section, thin-walled, cold-formed steel columns have at least three competing buckling modes: local, distortional, and Euler ~i.e., flexural or flexural-torsional! buckling. Closed-form prediction of the buckling stress in the local mode, including interaction of the connected elements, and the distortional mode, including consideration of the elastic and geometric stiffness at the w...

Local and Distortional Buckling of Cold-Formed Steel Members

Laminar structures have a high post-buckling strength reserve. Cold-formed steel profiles can be taken as a set of thin plate elements. Therefore it is necessary to design this type of profiles taking into account that reserve of strength in post-local buckling modes of failure. The method normally used to design this type of structures is based on the Effective Width concept. The Effective Wid...

Distortional Buckling Of

From Local to Global and Back Again

This paper considers the cost of preprocessing a digital terrain model (DTM) represented as a trian-gulated irregular network (TIN) so that drainage queries|e.g., what is the watershed of a query point, or how much water passes through a point given that rain is falling at a known rate|can be answered by simply evaluating a summary function. Although the worst-case storage and preprocessing cos...

From Local to Global Illumination and Back

The following being musings about illumination problems and illumination answers, more particularly about the evolution and the interplay between local and global illumination concerns.