Programmable Multistable Mechanisms
Event details
| Date | 29.03.2018 |
| Hour | 16:15 › 17:15 |
| Speaker | Mohamed Zanaty - EPFL STI IMT INSTANT-LAB |
| Location | |
| Category | Conferences - Seminars |
Abstract Multistable mechanisms have a wide range of applications such as mechanical switches and energy harvesters. I introduce programmable multistable mechanisms, where the number of stable states can be modified by programming inputs. Stability programming opens a whole host of applications from medical devices to mechanical computation. The qualitative stability behavior of a generic programmable multistable mechanism, the T-mechanism, is established. An analytical model based on Euler-Bernoulli beam theory is used and standard stiffness methodology is utilized to approximate mechanism strain energy as an eighth degree polynomial, where the coefficients are functions of the programming inputs. The roots of this polynomial determine the qualitative stability and stiffness behaviors. The results are validated using finite element analysis and experimental measurements. This method can be generalized to more complicated designs. Stability programming is applied to surgical tools to improve the treatment of the retinal vein occlusion.
Bio Mohamed Zanaty is a doctoral student at Instant-lab, Institute of Microengineering at EPFL. His research consists of the design, modeling, simulation and characterization of compliant mechanisms and their applications to medical devices.
Bio Mohamed Zanaty is a doctoral student at Instant-lab, Institute of Microengineering at EPFL. His research consists of the design, modeling, simulation and characterization of compliant mechanisms and their applications to medical devices.
Practical information
- General public
- Free
Organizer
- MEGA.Seminar Organizing Committee (Anna Lee, Lorenzo Benedetti, Hervé Elettro, Till Junge, Francesco Maresca, Roozbeh Rezakhani, Dong Yan, Noelia Simone)