• Apparent mass of seated human body

Posted: **Sun Jul 14, 2024 1:46 pm**

The equation:

$M(\omega) = \frac{force\:at\:seat\:person\:interface}{acceleration\:at\:seat-person\:interface$

$M(\omega) = \frac{F_1(\omega)}{A_p(\omega)}$

$M(\omega) = \frac{F_1(\omega) - m_1 A_s(\omega) - m_2 A_p(\omega)}{A_p(\omega)}$

$$M(\omega)$: Apparent mass (frequency domain)$
$$F_1(\omega)$: Force at seat-person interface$
$$A_p(\omega)$: Acceleration at seat-person interface$
$$A_s(\omega)$: Seat acceleration$
$$m_1$: Lower body mass$
$$m_2$: Upper body mass$