ESEMPIO DI PRESENTAZIONE POWERPOINT PER TESI DI LAUREA

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ESEMPIO DI PRESENTAZIONE POWERPOINT PERTESI DI
LAUREA SCRIVERE TITOLO QUI

• Candidato Luigi Serbelloni Mazzanti
• RelatoreProf. Luigi Tizio
• Correlatori
• Prof. Pino Tizio
• Ing. Gino Tizio

Illustrazione opzionale qui in mezzo?(meglio se
su fondo bianco)
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Introduzione

• Nota allego una dozzina di slide come esempio di
  PPT con foto/etc.
• Multiple clearances a numerical challenge
• Dry friction model
• Rigid body assumption
• Formulation as vector-measure differential
  inclusions
• Solution by means of Second-Order Cone
  Complementarity Problem

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Introduzione

• Clearances with dry friction sometimes are
  unavoidable
• Cheap devices
• Printers
• Home appliances
• Sturdy, rough mechanisms
• firearms,
• earth-moving machines
• harvesting machines

4
Known approaches

• Smooth ODE with deformable kinematic pairs
• (ex. Hertz theory, FEM, regularization, etc.)
• Problems
• - computationally expensive
• - knowledge of material/geometry
• Non-smooth dynamics with
• piece-wise integration
• (stop-and-restart schemes)
• Problems multiple contacts?

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Our approach

• Assumptions
• - multi-rigid-body model
• - N point-like contacts in clearances
• - Coulomb dry friction model
• Kinematic pairs with clearances set of
  unilateral contacts with friction

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Revolute joints

• In three dimensional case

? Signorinis complementarity condition
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Prismatic joint

• For the three dimensional case, at most 16
  unilateral contacts

For all the edge-pairs, (l1, e4) (l1, e1) (l2,
e1) (l2, e2) (l3, e2) (l3, e3) (l4, e3) (l4,
e4) (l1, e8) (l1, e5) (l2, e5), (l2, e6) (l3, e6)
(l3, e7) (l4, e7) (l4, e8)
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Contact model

• For each contact pair
• Vectors w and u
• from Gram-Schmidt
• Friction force
• Coulomb friction as maximum-dissipation principle
  (from Kuhn-Tucker form)

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Eccetera eccetera

• Modificare / inserire slide a piacimento
• Usare liste con punti tipo questa quando
  possibile
• Preferire immagini a descrizioni testuali
• Meglio tante slide semplici piuttosto che poche
  complesse
• Eccetera eccetera
• Bla bla
• Etc.

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Conclusioni

• Pochi punti qui.. (sintetizzare principali
  conclusioni)
• Bla bla
• Bla bla
• Bla bla
• Bla bla.