MEMS Resonator Simulation Software: HiQLab
HiQLab is a finite element tool for simulating resonant MEMS that Dr. David Bindel. initiated and continues to develop in collaboration with our research group at the University of California, Berkeley. The software's aim is to be able to make available a tool for accurately modeling damping behavior in resonators, since the current widely available CAD tools are able to simulate the resonance frequencies but are not able to model the damping well. HiQLab is written mainly in C++, with an interface to the scripting language LUA and the popular commercial software MATLAB. I have made contributions in developing the software which include but are not restricted to implementation of thermoelastic elements, electrical circuit elements, and interfaces to the parallel numerical libraries Trilinos and PETSc. All the simulations I have conducted have been with this software.
Presentations
- HiQLab: Simulation of Resonant MEMS : Beowulf Day, ETH Zurich, January 2007.
- HiQLab tutorial : BSAC Lunch Meeting, UC Berkeley, May 2006.
- MEMS Resonator Simulation : BSAC Industrial Advisory Board Meeting, UC Berkeley, March 2006.
Publications
- T. Koyama, D.S. Bindel, W. He, E. Quevy, S. Govindjee, J.W. Demmel, and R.T. Howe. Simulation Tools for Damping in High Frequency Resonators. Proceedings of IEEE SENSORS 2005. Irvine CA, November 2005.
- D.S. Bindel, E. Quevy, T. Koyama, S. Govindjee, J.W. Demmel, and R.T. Howe. Anchor Loss Simulation in Resonators. Proceedings of MEMS 2005. Miami, FL, February 2005.
Reduced-order Modeling of Linear Dynamical Systems and Thermoelastic Damping
Presentations
- Structure preserving reduced order model for second-order linear dynamical systems. : Workshop on Geometric Mechanics and Applied Dynamics, Oberwolfach Germany, July 2008. [ Poster ]
- Modeling of Thermoelastic Damping in MEMS Resonators. : 8th United States National Congress on Computational Mechanics, Austin Texas, August 2005.
Publications
- T. Koyama and S. Govindjee. Moment Matching Theorems for Dimension Reduction of Higher-Order Dynamical Systems via Higher-Order Krylov Subspaces. Technical Report SEMM-2008- 04, Structural Engineering, Mechanics and Materials, Department of Civil and Environmental Engineering, University of California, Berkeley, November 2008.
Perfectly Matched Layers and Computation of Eigenvalues of Large-Scale Complex-Symmetric Systems
Presentations
- Computing Interior Eigenvalues of a Generalized Complex-Symmetric Pencil arising from the Modeling of Resonant MEMS Systems. :8th World Congress on Computational Mechanics(WCCM8) and 5th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2008), Venice, Italy, June 2008.
Publications
- T. Koyama and S. Govindjee. Solving generalized complex-symmetric eigenvalue problems arising from resonant MEMS simulations with PETSc. Proceedings of the 6th International Congress on Industrial and Applied Mathematics 2007. Zurich, Switzerland, July 2007. [ Slides ]
