Abstract
M.Ing. (Mechanical Engineering)
This dissertation evaluates the suitability of the finite element method
as a tool for the design and analysis of elastomeric materials in
general and flexible shaft couplings in particular.
The theoretical background covers numerous aspects that are
essential to the comprehension of the functioning of elastomeric
materials and the difficulties inherent to the numerical modelling of
such materials. These aspects include the properties of rubber, the
functioning and selection of flexible couplings and some details
regarding linear -, non-linear - 'and dynamic finite element analysis.
The problems investigated for the purposes of this study may be
divided into three categories:
• The capabilities of the finite element method to compare different
variations of a flexible coupling design parametrically is
investigated.
• Uni-axial tensile - and compressive material tests are numerically
simulated to assess the ability of the finite element method to
predict the response of materials subjected to large-scale nonlinear
deformation. The numerical results are also verified by
means of physical material tests.
• Based on the modelling methods that were optimized in the first
two categories, a numerical model of a flexible coupling in start up
mode is developed. The accuracy of predictions is evaluated by
comparison with physically measured results.