Projects in Mechanics

Mechanical metamaterials are rationally designed artificial materials that gain unprecedented mechanical properties from their structures and carefully engineered unit cells, rather than from the properties of their constitutive materials.  Mechanical metamaterials have great potential application in smart devices, energy absorption, etc.

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Programmable cellular metamaterials

Cellular materials are multiphase composite materials that consist of a solid matrix and a fluid phase. Cellular materials with extraordinary mechanical properties can be called cellular metamaterials. The cellular metamaterials with auxetic properties offer a high-dimensional design space by their various geometric and mechanical parameters, and an ideal development platform for smart materials by their unique and programmable properties. Meanwhile, their relatively regular geometric configurations prompt the efficiency of their design and manufacture process and enhance the feasibility of practical applications.

In this work, we intend to investigate the programmable and automated design of cellular metamaterials, and build the foundation for efficient application in engineering.

Project leader: Z. Zhang

Status: ongoing

Damage tolerance in additively manufactured metals

This project is aimed at analyzing fatigue/damage tolerance properties of additively manufactured metallic parts in comparison with conventionally manufactured components. 

Project leader: C. van der Last

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Status: ongoing

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Vibration attenuation in assemblies of particles

Particle damping is widely used to attenuate vibrations in gears and engines, heavy-duty compressors, airport wind towers, and various machine tools. When a structure filled with particles vibrates, the motion coupling and energy transfer between the container and the particles leads to collision and friction at contact points, thus dissipating the vibrational energy. This project will investigate particle-based vibration reduction for small-size particles.

Project leader: A. K. H. Saeed

Status: ongoing