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Abstract: Multi-valued friction is often observed in lubricated contact systems operating under unsteady sliding conditions. It the past, this behavior has been modeled using a measured time delay between ...

Abstract: A new frontier in the development of prosthetic devices is the design of nanoscale systems which replace, augment, or support individual cells. Similar to cells, such devices will require the ...

Abstract: The dynamics responsible for the mixing and dissolution of the polar vortex during final stratospheric warmings is investigated. A GCM and an associated offline N2O transport model are used to simulate the dynamics and ...

Abstract: A solution for the end problem of a rectangular beam resting on a simple elastic foundation is obtained as a series expansion in the eigenfunctions of the system. For a beam aligned with ...

Abstract: The National Center for Atmospheric Research (NCAR) has a responsibility for enhancing and assisting the national university-based atmospheric research effort. This responsibility is met partly by programs of research at ...

Abstract: A kinematic analysis is presented for the twisting of threaded components loaded by gravity and subjected to axial harmonic vibration. It is shown that the complex motions of twisting due to ...

Abstract: The influence of harmonic normal loads on sliding friction is investigated through analysis of contacts consisting of conical and spherical sliders of hard materials on softer metal surfaces. ...

Abstract: To determine a suitable kinematic structure for a specific application is a complex task. Some available methods may provide a list of possible architectures for a robot wrist. However, a ...