A Simple Experiment to Explore Standing Waves in a Flexible Corrugated Sound Tube

Experiments on standing waves in a rectangular tank with a corrugated bed

Patrick D. Weidman1,†, Andrzej Herczynski2, Jie Yu3 and Louis N. Howard4 1Department of Mechanical Engineering, University of Colorado, Boulder, CO 80309-0427, USA 2Department of Physics, Boston College, Chestnut Hill, MA 92467-3811, USA 3Civil Engineering Program, Department of Mechanical Engineering, School of Marine and Atmospheric Sciences, Stony Brook University, Stony Brook, NY 11790, USA...

The horn-feed problem: sound waves in a tube joined to a cone, and related problems

A semi-infinite tube is joined to a semi-infinite cone. Waves propagating in the tube towards the join are partly reflected and partly radiated into the cone. The problem is to determine these wave fields. Two modal expansions are used, one in the tube and one in the cone. However, their regions of convergence do not overlap: there is a region D near the join where neither expansion converges. ...

A Simple Approach to Static Analysis of Tall Buildings with a Combined Tube-in-tube and Outrigger-belt Truss System Subjected to Lateral Loading

In this paper, an efficient technique is presented for static analysis of tall buildings with combined tube-in-tube and outrigger-belt truss system while considering shear lag effects. In the process of replacing the discrete structure with an elastically equivalent continuous one, the structure is modeled as two parallel cantilevered flexural-shear beams that are constrained at the outrigger-b...

Analysis of standing sound waves using holographic interferometry

Optical holographic interferometry was used to study standing sound waves in air inside a resonance tube driven by a small loudspeaker at one end. The front face of the resonance tube was constructed of plexiglass, allowing optical interrogation of the tube interior. The object beam of the holographic setup was directed through the plexiglass and reflected off the back wall of the resonator. Wh...

Numerical Simulation of the Acoustic Waves Propagation in a Standing Wave Tube