ME 354 Vanth Module 4 write-up

# ME 354 Vanth Module 4 write-up - VaNTH Module Problem 4...

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VaNTH Module Problem 4: Dynamic Center of Gravity Calculation Meena Alavi, Usman Ansari, Kevin Roberts, and Brianna Schultz October 11, 2011

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I. Generate Ideas The whole body center of mass (COM) follows a sinusoidal path in both the vertical and horizontal directions. II. Test Your Mettle A. Exercise 2 A.i. To find the whole body center of mass (COM) at each distinct time during the dynamic walking process for the individual whose data has been provided in the Excel spreadsheet, we divided the entire body into 13 segments and used the anthropometric data to calculate the z-direction COM for each segment, then we summed the products of the mass and COM of each segment, and finally divided this number by the total mass of the body to find the whole body COM in the z-direction. This calculation was done in Excel for each distinct time, and the following graph of the trajectory of the COM was obtained. A.ii. Whole Body COM: B. Exercise 3 B.i. The trajectory of the COM for the whole body while walking provides a more accurate plot than the average trajectory of the ASIS markers because the data considers multiple points on the human body. The
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ME 354 Vanth Module 4 write-up - VaNTH Module Problem 4...

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