CAD & Rapid Prototyping by CAD & Rapid Prototyping by 3-Dimensional Printing 3-Dimensional Printing

(3DP(3DPTMTM))Rapid Toolers:Rapid Toolers:Jordan MedeirosJordan Medeiros

Stephanie SilbersteinStephanie SilbersteinHannah YunHannah Yun

Recap: Our TaskRecap: Our Task

Utilize 3D CAD software (Solidworks) and Utilize 3D CAD software (Solidworks) and 3D printing3D printing

Explore modern research fields and apply Explore modern research fields and apply this techniquethis technique

Settle on a project idea!Settle on a project idea!

Gantt ChartGantt Chart

Task 1: "Master" SolidWorks1) Run through tutorials2) Develop simple modelsTask 2: Prototype Design1) Choose Project2) Research3) Develop SolidWorks Model4) Research Casting Resources5) CastTask 3: Structural Analysis1) Testing2) AnalysisTask 5: Poster Board Prep

TetrakaidecahedraTetrakaidecahedra

14 faces:14 faces: 6 squares6 squares 8 hexagons8 hexagons

Packs to fill spacePacks to fill space

Many optimal characteristics, possible Many optimal characteristics, possible application for bone replacementapplication for bone replacement

Original (Ideal) PlanOriginal (Ideal) Plan

Research the ideal Research the ideal metal/materialmetal/material

Construct model as close Construct model as close to scale as possibleto scale as possible

Test mechanical Test mechanical propertiesproperties

J. Biomed Res. Mat. 52, 631-638, 2000

BUT…THERE IS A PROBLEM!

ProblemsProblems

Nearly impossible to Nearly impossible to cast at such a small cast at such a small scale (~ 100 microns)scale (~ 100 microns)

Impossible to 3DP and Impossible to 3DP and cast such intricate cast such intricate structure with a metalstructure with a metal

J. Biomed Res. Mat. 52, 631-638, 2000

Prometal.mov

New PlanNew Plan

Theoretical vs actual mechanical Theoretical vs actual mechanical propertiesproperties

Variables:Variables: Strut lengthStrut length Orientation of structureOrientation of structure Material composition (if casting is possible)Material composition (if casting is possible) Casting techniqueCasting technique

Tetrakaidecahedron vs diamond Tetrakaidecahedron vs diamond structure?structure?

Progress…Progress…

Consulted various professionals in the Consulted various professionals in the fieldfield Prof. Lorna GibsonProf. Lorna Gibson Prof. Sam AllenProf. Sam Allen 3.042 Instructors3.042 Instructors

Research in pertinent literatureResearch in pertinent literature Available 3DP facilities?Available 3DP facilities? Solidworks!Solidworks!

Gantt ChartGantt Chart

Task 1: "Master" SolidWorks1) Run through tutorials2) Develop simple modelsTask 2: Prototype Design1) Choose Project2) Research3) Develop SolidWorks Model4) Research Casting Resources5) CastTask 3: Structural Analysis1) Testing2) AnalysisTask 5: Poster Board Prep

Solidworks ProgressSolidworks Progress

Questions to AnswerQuestions to Answer

Symmetries in the tetrakaidecahedron Symmetries in the tetrakaidecahedron structure?structure?

Isotropic/anisotropic properties?Isotropic/anisotropic properties? What exactly makes this structure so What exactly makes this structure so

special?special?