Applied forces in plates generate bending waves rather than pure shear waves

Evidence

It is difficult to generate pure shear waves in a plate via the use of applied forces because in practice an applied force results in both lateral and longitudinal displacements. This has the effect of launching bending (flexural) waves into the plate. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 121

Categorization

• corroborated: 3 independent passages support this claim — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 121
• XREF: connects to: Nodal patterns for irregular plate shapes remain unsolved today.; Materials with movable boundaries support wave types beyond longitudinal waves.; Solid structures carry three main wave types plus hybrid surface waves — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 105 (+1 more)

Broader Connections

• Bending wave velocity tops out at the material’s transverse shear wave speed #qualifies (0.85) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 129