This paper presents a numerical study on anchor and interfacial dissipation in piezoelectric MEMS resonators with in-plane longitudinal-mode vibrations. According to recent proposals, interfacial dissipation is formulated in terms of the stress jump across the interface. A refined dedicated numerical tool is employed both to evaluate anchor losses and to implement the model of interface dissipation. Extensive comparisons with experimental data are performed showing excellent quantitative agreement.
Frangi, A., Cremonesi, M., Jaakkola, A., & Pensala, T. (2013). Analysis of anchor and interface losses in piezoelectric MEMS resonators. Sensors and Actuators A: Physical, 190, 127-135. https://doi.org/10.1016/j.sna.2012.10.022