This paper studies the three-dimensional acoustic radiation force (ARF) of a fluid-filled viscoelastic spherical shell positioned arbitrarily in a zero-order Mathieu beam(zMB). A series of simulations were conducted to undertake a systematic investigation of the ARF of the shell, with a particular emphasis on the effects of beam parameters (dimensionless frequency, half-cone angle, ellipticity parameter) and material parameters (shell material, filling medium, relative thickness, particle position). The results demonstrated that increasing the ellipticity parameter has the effect of reducing the amplitudes of both the transverse force and axial force, whilst concomitantly shifting the peak of transverse force towards larger half-cone angles. Due to the asymmetric distribution of the acoustic field, the transverse force in y-axial direction displays a distinct variation pattern in comparison to that in x-axial direction. Furthermore, the material and structural properties of the particles have been found to have a significant impact on ARF. Thick shells () yield substantial ARF with a pattern analogous to solid spheres, while thin shells show reduced ARF magnitude and fewer frequency peaks. The fluid filling the shell also exerts a substantial influence on both the trend and the magnitude of variations of ARF. Moreover, the position of the particle in the beam exerts an influence on the ARF function. When the particle is close to the beam axis, it is displaced from the beam axis in the transverse plane. Conversely, when the particle is at a greater distance from the beam axis, the ARF exerts a force that draws the particle towards the beam axis. This study provides key theoretical support for the directional manipulation of viscoelastic structural particles in a zMB, facilitating its potential applications in acoustic tweezers, targeted drug delivery, and microfluidic sorting.
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