• If you are walking, given a frequency of fp= 2.2Hz, with a total mass assumed to be M = 99kg, If you were to model you

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If You Are Walking Given A Frequency Of Fp 2 2hz With A Total Mass Assumed To Be M 99kg If You Were To Model You 1 (61.93 KiB) Viewed 30 times

• If you are walking, given a frequency of fp= 2.2Hz, with a total mass assumed to be M = 99kg, If you were to model yourself as a Single Degree of Freedom mass-spring system, with your body modelled as a mass supported on your legs modelled as a damped spring (Fig. 1), the effective system properties can found using the following relations: m=97.082+0.275 M - 37.518 fp (1) c=29.041 mº ,,0.883 k = 30351.744 - 50.261 c +0.035 c2 (3) These expressions are only true when using M in kgs and fp in Hz, and provide the effective properties in SI units. 1- What is your damping ratio? If you were to suddenly stop walking, would you expect to continue oscillating? 2- If you slow down to a more leisurely pace of fp = 1.5Hz. What is your new damped time period? You Also you m LEG am BASE (a) Diagram illustrating leg length and step length (b) A SDOF mass-spring-damper system Figure 1: How everybody else sees humans vs how an engineer sees humans