H. T. Mengistu, A. García-Cristóbal
Material Science Institute, University of Valencia, Valencia, Spain
The possibility to dispose of two-dimensional (2D) approaches to problems originally posed in a three-dimensional (3D) geometry is always desirable since it reduces significantly the computing resources needed for numerical studies. In this work we report on a new 2D approach called Generalized Plane Piezoelectric (GPP) problem  and apply it to the calculation of the strain and electric fields ...
V. Pini, J. J. Ruz Martinez, E. Gil, M. Calleja, and J. Tamayo
Instituto de Microelectrónica de Madri
The detection back-action phenomenon has received little attention in physical, chemical, and biological sensors based on nanomechanical systems. We show that this effect is very significant in ultrathin bimetallic cantilevers, in which the laser beam that probes the picometer scale vibration largely modifies the resonant frequencies of the system. The light back-action effect is nonlinear, ...
E. Gutierrez-Miravete, W. L. Saunders II, K. Pendley
Rensselaer at Hartford, Hartford, CT, USA
General Dynamics Electric Boat, Groton, CT, USA
United Technologies - Pratt & Whitney, East Hartford, CT, USA
The determination of the modes of vibration of Functionally Graded-Metal-Ceramic Composite plates is important in practice in order to prevent undesired resonances in structural components. This paper describes the application of COMSOL Multiphysics® software for the determination of the modes of vibration of Aluminum A356-T6Alloy-ZrO2 FG-MCC square plates.
Z. Zheng, R. Zhang
Corning Incorporated, Corning, NY, USA
Introduction: Glass relaxation occurs in a range of temperature during transition from equilibrium to super-cooled liquid. Viscoelastic material model can be applied to simulate glass behavior during the glass transition regime and to predict the glass deformation and stress evolution. Viscoelasticity is the property of materials that exhibit both viscous and elastic characteristics when ...
A. Arevalo, S. Ilyas, D. Conchouso, I. G. Foulds[1,3]
Computer, Electrical & Mathematical Sciences & Engineering Division (CEMSE), King Abdullah University of Science & Technology, Thuwal, Saudi Arabia
Physical Sciences & Engineering (PSE), King Abdullah University of Science & Technology, Thuwal, Saudi Arabia
School of Engineering, University of British Columbia - Okanagan, Vancouver, BC, Canada
The simulation of a micromirror using polyimide as the structural material is presented. The simulation was used to verify the initial design parameters and to explore the different characteristics of the electromechanical device. For simulation simplicity the electrodes are integrated as part of the structural layer. The device thickness is 6 μm while the electrodes are 300 nm thick. For the ...
Georg-August University, Göttingen, Germany
Energy piles, i.e. heat exchangers located within the foundation piles of buildings, are used for heating of cooling purposes. Although the absolute values of deformations and temperature gradients are low or moderate, the entire setting can be influenced by thermo-hydro-mechanical coupling. The fluctuating thermal regime may affect the deformation of pile and surrounding ground as effect of ...
M. J. Hancock, N. H. Elabbasi, M. C. Demirel
Veryst Engineering, LLC., Needham, MA, USA
Pennsylvania State University, University Park, PA, USA
Pumping liquids at small scales is challenging because of the principle of reversibility: in a viscous regime, the flow streamlines through a fixed geometry are the same regardless of flow direction. Recently we developed a class of microfluidic pump designs based on tilted flexible structures that combines the concepts of cilia (flexible elastic elements) and rectifiers (e.g., Tesla pump). We ...
M. Weschta, S. Tremmel, S. Wartzack
Engineering Design, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), Erlangen, Bavaria, Germany
To reduce friction in lubricated tribological contacts, the surfaces of the contacting bodies can be microstructured to improve lubricating conditions. For lower loaded contacts this approach has already reached industrial applications, e.g. the piston-liner contact. For higher loaded contacts the effects are currently in basic research. Elastic deformation in the contact area plays an important ...
E. Aguayo, R. Lyon, M. Helmbrecht, S. Khomusi
The Newton Corporation, Bowie, MD, USA
NASA Goddard Space Flight Center, Greenbelt, MD, USA
Iris AO, Inc., Berkeley, CA, USA
Microelectromechanical systems (MEMS) are becoming more prevalent in today’s space technologies. The Visible Nulling Coronagraph (VNC) instrument, being developed at the NASA Goddard Space Flight Center, uses a MEMS Mirror to correct wavefront errors. This MEMS, the Multiple Mirror Array (MMA), will enable the VNC instrument to detect Jupiter and ultimately Earth size exoplanets. The MMA ...
SPAWAR Systems Center (SSC) ATLANTIC, Charleston, SC, USA
Additive manufacturing uses 3D printing to build physical parts from CAD-based designs. The technology includes fused deposition modeling (FDM) and selective laser sintering (SLS) methods. 3-D printing is of particular interest for smaller, one-of-a-kind, customizable products. A cube satellite (CubeSat) containing fiber reinforced SLS parts has been successfully launched (Ref 1). Lower ...