The occurrence of various vibrations and noises in an automobile, such as idling vibration, boom noise and road noise, is greatly affected by the natural vibration modes and could be developed for ...

A nonlinear, conservative system having two degrees of freedom is considered. The potential energy is subject to certain restrictions which are consistent with the strain energy of springs. Then, the ...

Once upon a time (2017), I published a simple design idea for filtering and attenuating PWM DAC output ripple that I’d found very useful for over a decade. It works by passive summation of the PWM ...

In this example we considered the free response of a fixed-fixed string to a set of initial conditions that resulted from pulling the string at its midpoint and releasing it from rest. We found that ...

It happens to me maybe once or twice a month. Just the other morning I was in the elevator with my bike, riding up to our third-floor office. I felt a vibration in my pocket and reached for my phone.