Design & Development of Flange Connection for Robust Torque Transfer in Marine Propulsion System
Typ
Examensarbete för masterexamen
Program
Product development (MPPDE), MSc
Publicerad
2020
Författare
Subburaman, Shiyam
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
Marine propulsion systems undergo a multitude of varying loads, which can be due
to resonances, engine torque peaks, ice propeller impacts and marine propulsion itself.
The stresses experienced by the propeller are propagated throughout the length
of the shaft.
The flange faces, connecting the propeller to the engine gearbox, is subjected to
both axial and shear forces. Caterpillar propulsion utilizes a combination of bolts
and expansion dowels at the flange faces to absorb these forces. The focus of the
project was to develop an improved design for the expansion dowels, in terms of
manufacturability and cost. The Product development methodology and Advanced
Product Quality Planning Framework were followed for developing a new concept.
The developed solution works on the principle of ’wedge effect’ to achieve the required
interference fit. The final solution is designed for ease of manufacturing and
also enables ease of assembly.
The final product was simulated in virtual conditions. Static analysis was done so as
to fulfill all the requirements from the classification societies. Virtual Prototyping
was done to simulate the worst-case conditions, like the peak transient torque acting
on the flange faces, to validate the robustness of the solution. Attempts were made
to answer the research questions in the end. The final product was also checked for
fulfillment of target specifications to see if the project has achieved the purpose it
had set out for.
Beskrivning
Ämne/nyckelord
Advanced Product Quality Planning, Product Development, Quality Function Deployment , static design analysis, Virtual prototyping, expansion dowel, interference pin, flange connection, shear pin