Modal and harmonic paths answer “where does the structure resonate?” and “how does it respond at driving frequencies?” — questions every UAV and airframe vibration desk meets early.
Modal essentials
Extract frequencies, shapes, participation factors, and effective mass. Check eigen residuals so spurious modes do not survive into flutter or random-vib campaigns.
Harmonic FRF
HENSTRUCT supports direct and modal complex FRF (Re/Im) with stress amplitude — useful for equipment mounts and propeller-driven airframes.
Suite context
Import mesh from HENMESH; couple aero forcing from HENFLOW when the vibration source is aerodynamic.
How HENSTRUCT helps you act
Build a modal baseline before random vibration, spectrum, or flutter. Contact support@hendoi.com for demos.