Oregon problems tuesday

solid mechanics practice

a pair of cute little problems. not hard enough for the candidacy exam, but good practice nonetheless. add in some redundant members to the castigliano truss, or a distributed and auxiliary stresses to the torsion problem, and maybe…

kulakowsi system dynamics problem

closed form solution for position of an offset slider crank piston

this is something i always have trouble doing… closed form position and velocity solutions to four-bars are very hairy. luckily, i am not likely to see this on the exam. more likely is a question about the position, velocity, and acceleration of this system at any given point along its path. still, i would like to be able to take this position solution and differentiate it twice without making any errors.

Eccentric cam design problem

This is one of the many directions a problem like this can go.

Frog and his Log part 1