Author(s): Riyas PR, Dr. G. Arunkumar
Published in: International Journal of Engineering Research & Technology
License: This work is licensed under a Creative Commons Attribution 4.0 International License.
Volume/Issue: Volume. 6 - Issue. 01 , February - 2017
The cold formed steel structural members are made through cold forming a thin plate which is normally from 1.2 mm to 3 mm and has a section shape with the right purpose. One of the advantages of cold formed steels is that the strength to weight ratio is much higher than that of common hot rolled shapes, thus it can reduce the total weight of structures. Lots of study has been done in optimizing sizes of castellated beams with hexagonal openings, and hence there is need to optimize the beams with other shaped openings. While the local failure associated with the castellated beam can be minimized by providing other shaped openings like circular, diamond shapes etc. Investigation of cold formed I section castellated beam with cellular openings is carried out by varying the size of openings and the spacing between openings. The performance is analyzed using ABAQUS 6.13 by keeping the depth and width of the sections constant. Theoretical investigation is carried out by using North American specification for the design for cold formed steel AISI S-700:2007, Australian/New Zealand design code for cold formed steel AS/NZS 4600:2005. The results predicted using numerical analysis and theoretical analysis are compared and presented. Results showed that, the beam gives better strength results for cellular shaped opening with opening size of 0.4 times the overall depth of the beam. It is also observed that, castellated beams are mostly tends to fail in their local modes of failure.
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