Introduction
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The Finite Element Method is not limited to one engineering domain — the same mathematical framework applies to structural mechanics, fluid dynamics, and electromagnetics. What changes is the physics being modelled.

The posts collected here apply FEM to real projects and real problems: Parts you can hold, PCBs you can order, simulations you can verify with a measurement. The emphasis throughout is on validation — comparing simulation results against real measurements rather than stopping at the simulation itself. For readability the list is split into electrical and mechanical.

### 1   Mechanical

* [Auxetic Materials: Design, Simulation, and 3D Print (TPU)](https://blog.hirnschall.net/auxetic-material/)
* [Computing Eigenfrequencies with PINVIT, LOPCG, and LOBPCG](https://blog.hirnschall.net/calculating-eigenfrequencies-using-fem/)

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### 2   Electrical

* [4x SATA Backplane: Design, Simulation (3D, full wave), and Build](https://blog.hirnschall.net/4x-sata-backplane/)
* [Gerber to STEP conversion for FEM](https://blog.hirnschall.net/gerber-to-step/)

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### 3   University Projects (PDF)

* [Stabilized P1/P1 elements for incompressible flow - Bachelor Thesis](https://blog.hirnschall.net/downloads/files/bachelor-thesis-hirnschall.pdf)
* [Computing Eigenfrequencies using Finite Element Methods - Seminar Paper](https://blog.hirnschall.net/downloads/files/computing-eigenfrequencies-using-fem.pdf)