forcesin
Forcesin is a term used in mathematical modeling and signal analysis to denote the sine-phase component of a time-varying force within a dynamic system. While not a standard designation in established physics texts, it appears in some teaching materials and software documentation to describe the extraction of a force signal’s sine component at a specified frequency.
Definition and relation to Fourier analysis
For a periodic force F(t) with period T = 2π/ω, the forcesin at frequency ω can be defined
Forcesin is used conceptually to analyze vibration and dynamic response, enabling separation of the sine-phase component
Computational notes and limitations
In practice, forcesin can be computed with numerical methods, such as the discrete sine transform or windowed
Fourier coefficient, sine component, discrete sine transform, harmonic analysis, modal analysis.