Theoretical question: Given a column of wood subjected to an axial load which would eventually cause "crumpling" (multiple shear failures), would the column be more resistant to the crumpling if already constructed in that crumpled shape? That is, I guess, the original column is largely...
I have read with interest and, often, amusement the posts regarding impact forces. My question is an academic one. Immediately upon impact there can be a variable number of rather high frequency, low amplitude vibrations before the system settles to a steady state. I should like to model this...
With a selfexcited system (nonlinear equation of Duffing/van der Pol type) what does the constant which multiplies the damping term mean in physical, real terms? Thanks
What is the DC component of a time series which is not electrical; that is, what does or can the zero frequency component represent?
I am looking at a series of stride lengths for a runner.
