Static, Vibration Analysis and Sensitivity Analysis of Stepped Beams Using Singularity Functions. (20th January 2014)

• Record Type: Journal Article
• Authors: Cheng, Peng; Davila, Carla; Hou, Gene
• Other Names: Li Yiyang Academic Editor.
• Is Part Of: Journal of structures. Volume 2014(2014)
• Publication Date: 2014-01-20
• Subjects: Structural engineering -- Periodicals; Structural engineering; Electronic journals; Periodicals; 624.17
• DOI: 10.1155/2014/234085
• Languages: English
• ISSNs: 2356-766X

Abstract

Abstract : A systematic approach is presented in this paper to derive the analytical deflection function of a stepped beam using singularity functions. The discontinuities considered in this development are associated with the jumps in the flexural rigidity and the applied loads. This approach is applied to static and vibration analyses of stepped beams. The same approach is later extended to perform sensitivity analysis of stepped beams. This is done by directly differentiating the analytical deflection function with respect to any beam-related design variable. The particular design variable considered here is the location of discontinuity in flexural rigidity. Example problems are presented in this paper to demonstrate and verify the derivation process.