Purdue University School of Mechanical Engineering


Morphing Structures

Projects

On-Demand Stiffness Selectivity for Morphing Systems

This project focuses on creating a novel class of purely elastic selectively compliant structures enabling large shape adaptation of morphing systems. Selective compliance is realised by exploiting the different structural behaviours about the stable states of embedded multi-stable elements, resulting in purely elastic time-dependent stiffness adaptation. Selective compliance enables on-demand activation of deformation modes in morphing structures, allowing to reduce actuation requirements without compromising shape adaptability.

Students

Sponsors

Publications


Compliant-based Actuators

This project explores compliant-based structures to generate load-carrying actuation systems exploiting deflections couplings. Our aim is to produce actuator architectures capable of transforming small strains from active materials into fast, large deflections leveraging tailored pre-stress in the structure. This is achieved by combining spatial anisotropy tailoring with structural instabilities. Our approach enables the generation of a class of actuators that exploits the mechanical advantage of compliant mechanisms, while providing high load-bearing capabilities.

Students

Publications


Morphing for Improving Efficiency in Turbomachinery Applications

The project aims at utilizing the shape-adaptability of morphing elements to increase efficiency in turbine engines by reducing flow leakage. The shape deformation is achieved by passive actuation through thermal, pressure and aerodynamic forces. A design tool exploits aero-thermo-elastic to tailor the reinforcement and geometry of the morphing structures. The programmed response thus exploits the resulting reinforcement and the environment to control the flow in the tip/hub regions with the potential of increasing the efficiency in turbomachinery.

Students