3650 anthropometrics Flashcards
anthropometrics
measures of the populations physical characteristics
chiastic principles
perfect mathematical proportions for perfect body
symmetria between strong action and relaxed thought for a harmonious balance
Contraposto
balance and perfect proportion/dimensions
vitruvian man
circle for units
modern day use for anthropometrics
accesibility, sizing, ergonomics
3 factors of anthropometrics
length
mass
centre of mass
4 factors of centre of mass
balancing point - unique because all mass is equally distributed around it
movements on either side are equal and opposite
cadaver - balancing point
live humans - balance board
COM of uniform density
geometric centre
difference in physique
changes in body COM
people are getting
taller and bigger
secular trend
happening to entire population
sports population
sliding out of normal population
NBA - long and tall and massive
models - taller but smaller
4 assumptions in modelling
each segment has fixed mass
each segment is rigid
location of COM for any segment is fixed
joints are simple hinges
Formula for x and y coordinates when calculating COM
Xp+(xd+xp) (segmentp)
Combined segments formula for COM
Mc=M1+M2
McXc=M1X1+M2X2
