Abstract
M.Phil. (Mechanical Engineering)
Various geometric configurations of gussets are extensively used in yellow machinery construction with their main role being to strengthen welded joints.
The effect of geometric and design parameters on the mechanical performance of gussets as found in yellow machinery has been investigated and is reported herein. In this study, typical examples of gussets were tested experimentally and the results of the experimental work were used to validate a numerical model with both linear and non-linear buckling analyses performed using finite element methods.
The effect of geometry changes such as the inclusion of coping holes, parabolic edges, and unequal leg lengths on the ultimate strength was studied using parametric finite element analysis techniques based on a validated finite element model. Comparisons were made between the performance of a simple triangular gusset and alternative geometries.
The investigation showed that these alternative geometries play a significant role in the compressive strength of the gussets. It also showed that for the case of a parabolic edge configuration used in welded structures subjected to fatigue loading, these geometry changes may have an effect on the fatigue strength as a direct comparison to a simple triangular gusset. The investigation produced results with readily available and reliable data that could be used for choosing the most appropriate gusset design for an application in heavy machinery design including yellow machinery in order to enhance the mechanical performance.
Recommendations as applicable to design and recommendations for further work were presented.