HOli.. - Memorial University's Digital Archives - Memorial University ...

More documents

Recommendations

Info

Due to the accuracy limitation of the FDM machine, the edge and the surface of the propeller model arc not very smooth. Glue can be used to cover the propeller to achieve a smooth propeller body. Epoxy is a good choice for a propeller surface coating, because epoxy ean provide a thin wall around the surfaee and increase the strength of materials [411. In order to avoid unequal coating thickness, it is better to coat one blade at a time and keep the blade flat when the glue is drying. When the epoxy is fully dried, sand paper ean be used to make the blades much more smooth. As introduced before, PC is the strongest material to produce a strong propeller using FDM. PC coating with epoxy can provide higher strength than PC only. The detailed data for the strength orthe PC coating with epoxy material will need some experiments in the future work. Ifthe material is still not strong enough for some specific cases, the FDM propeller model can be used as a casting mould to produce a metal propeller. In chapter 6, Stratasys Fusion Deposition Modeling (FDM) 2000 is introduced. The method ofproducing a propeller using Stratasys 2000 is also presented. The material that can be used in Stratasys 2000 is listed, and PC is the best material for a propeller fabrication using FDM. Coating with glue can provide smooth and higher strength property lor a propeller model. 104
Chapter 7 Conclusions and Future Work 7.1 Conclusions rhe described rapid marine propeller design process was developed \0 facilitate a propeller design frolll simulation through 10 prototyping and testing processes. The OpcnPYL SW code was developed \0 generate the propeller geometry for automatic input into the CAD soBware, SolidWorks. SolidWorks includes the CFD simulation capability for propellers using the CosmosFloWorks package. This study has proven that CosmosFloworks can generate a reasonable prediction for propeller thrust. CosmosWorks can then be used to check the strength ora propeller design using FEA analysis. The original OpcnPVL code was able to generate the propeller design geometry for the CAD software. RI lIND. This gl'OlTIctry is generat(,'d as the sets ofpoints that are loeated on the foil sections orthe propeller blade. Users then had to use several commands to plot oul the geometry of the propeller in RIIINO. The OpenPVL SW code extended this capacity to generate the propeller geometry without any manual commands in 105
Page 4:
A Rapid Development Process for Mar
Page 7 and 8:
Table of Contents Abstract ... Ackn
Page 9:
List ofTables Table I: Required Inp
Page 12 and 13:
Figure 46: Surface Dynamic Pressure
Page 14 and 15:
a long time to analyze, draw, fabri
Page 16 and 17:
Simulation work is now commonly don
Page 18 and 19:
Early theoretical analysis applied
Page 20 and 21:
------------------------- provides
Page 22 and 23:
As can be secn in Table I, the lift
Page 24 and 25:
propeller geometry has to be entere
Page 27:
avoid cavitation; however, it decre
Page 31:
l" ........... ,... __ .... :l ,,_
Page 34:
Table 2: Advantages and Disadvantag
Page 41 and 42:
trend for many companies to reduce
Page 43 and 44:
fluxes through a particular control
Page 45 and 46:
known as a casting, is usually ejec
Page 47 and 48:
Table 3: Prototyping Technology Mat
Page 49:
quite accuratc for a testing level.
Page 54 and 55:
For given values ofJ, Fn, Rn, En, t
Page 56:
propeller geometry for impon into t
Page 59 and 60:
Using OpenPVL_SW I a propeller desi
Page 64:
o ...n".... 'Co 'OJ • • • DC)
Page 72 and 73: 3.3 Simulations using CosmosFloWork
Page 75 and 76: simulation domain are set to 6m and
Page 79: CosmosWorks can be used to check th
Page 82: Figure 33: Dynamic Pressure Distrib
Page 88: Chapter 4 Case Study: Simulation of
Page 94 and 95: The plots of RPM and thrust from ou
Page 96 and 97: Figure 46: Surface Dynamic Pressure
Page 98: Figure 48: Deflection ofthe AUV Pro
Page 102: In this simulation, two nose cones
Page 110 and 111: Chapter 6 Propeller Fabrication by
Page 112 and 113: Figure 60: Stratasys rDM 2000 After
Page 115: Material options for Stratasys Fusi
Page 119 and 120: References III Burtner, E., 1953, "
Page 121 and 122: [20] D'Epagnier, P.K., 2005, "A Com
Page 123 and 124: Appendix 1\: The Part ofOpcnPVL_SW
Page 125: Create all of the function commands
Page 131: Appendix B: SolidWorks Macro lor th
Page 134: 'create loft swModcl.ClearSelcction
show all

HOli.. - Memorial University's Digital Archives - Memorial University ...

Create successful ePaper yourself

Delete template?

Save as template?