EngD position: Flexure-joint Integrated Robust Elastic tripping mechanism

The objective of this project is to investigate whether the conventional lever-based tripping mechanism can be replaced by a mechanism based on flexure joints. The proposed compliant mechanism must combine two challenging requirements: it must be capable of blocking motion under high loads, while also enabling an extremely fast release, preferably within several milliseconds.

The investigation will combine numerical modelling and mechanical design with experimental validation. Several mechanism concepts will be analysed to assess their feasibility, followed by the development and testing of a promising concept in a hardware prototype.

The project is structured into three design iterations:
In the first phase (8 months) proposed mechanism concepts should demonstrate their ability to block the motion of a part while being subjected to a high force as well as showing a fast release. Numerical analyses support the design evaluation. Hardware test identify strengths and weaknesses of the concepts.
The second phase (8 months) involves an iteration to use the lessons learned from the first design to design an improved concept. Furthermore, a larger range of operating conditions is considered, e.g. in terms of temperature range and vibrational loads.
The third phase (8 months) aims towards a product related design of the compliant mechanism, which is also tested at the facilities of Siemens Energy.