Engineering · Simulation · Testing
Notes on CAE, structural dynamics, NVH and vibration testing — plus personal writing on software, books, film and photography.
01
Element type, aspect ratio, skewness and the convergence study. We assess whether a finite-element model's results reflect reality, through the lens of mesh quality.
Through Don Norman's classic, we discuss why usability and human-centered design in engineering are a technical matter, not a cosmetic one.
Extracting a frequency spectrum from an acceleration signal using NumPy and SciPy. Sampling, windowing and the practical use of the FFT in an engineering context.
Natural frequencies, mode shapes and damping ratios: a hands-on guide to the core ideas behind modal analysis, why it matters, and how it is used in both CAE and physical testing.
02
03
A short note for quickly plotting the frequency response function of a single-degree-of-freedom system in MATLAB.
MATLABA short note on how the accelerometer mounting method determines the usable frequency range in vibration testing.
Vibration TestingStep-by-step notes for setting up a modal (normal modes) solution for a part in Simcenter 3D.
Simcenter 3D04
A video on computing the power spectral density (PSD) of a vibration signal using SciPy's Welch function.
How do we measure the frequency response function of a simple structure with a modal hammer and a single accelerometer? A video walkthrough.
About
Engineering notes, simulation and personal writing.
Consulting
Consulting on simulation, testing and engineering support.
