# \#eigenvalues

**URL:** https://fenicsproject.discourse.group/tag/eigenvalues/67.md

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## [Modal analysis using dolfin-x](https://fenicsproject.discourse.group/t/modal-analysis-using-dolfin-x/7349)

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**Author:** [@Shubham\_Saurabh](https://fenicsproject.discourse.group/u/Shubham_Saurabh)\
**Replies:** 11\
**Last updated:** [May 13, 2026, 3:46pm UTC](https://fenicsproject.discourse.group/t/modal-analysis-using-dolfin-x/7349 "2026-05-13T15:46:08Z")

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Hello, I am trying to do modal analysis using dolfin-x. I have assembled mass and stiffness matrix. but not able to use eigen solver in it. I have to compute natural frequencies and mode shapes of a system. The below c…

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## [Structural Modal Analysis](https://fenicsproject.discourse.group/t/structural-modal-analysis/19479)

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**Author:** [@Finn\_Hansen](https://fenicsproject.discourse.group/u/Finn_Hansen)\
**Replies:** 1\
**Last updated:** [February 10, 2026, 2:57pm UTC](https://fenicsproject.discourse.group/t/structural-modal-analysis/19479 "2026-02-10T14:57:48Z")

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I am trying to replecate the eigenfrequencies from this paper: Modal Analysis of Single Rectangular Cantilever Plate by Mathematically, FEA and Experimental Ashish R. Sonawane, Poonam S. Talmale I cant get to achive re…