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Finite element modeling of acoustic field of physiotherapy ultrasonic transducers and the comparison with measurements

机译:物理疗法超声传感器声场的有限元建模及测量比较

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This paper presents the modeling of the acoustic field of a physiotherapy ultrasonic transducer by using the finite element method. An ideal emission is presented obtained by using the approach developed by Rayleigh, called “piston in a baffle”. Simulations with FEM also are presented to compare them with the analytical results. The results of the model are also compared to those of the measurements in a physiotherapy transducer. The results show the efficacy of modeling the real transducers with ideal models in relation to the overlapping in the Fresnel zone and the characteristic parameters. A necessity is evident after this analysis: more appropriated models using more real boundary conditions. Results indicate that Fresnel zone is not correctly modeled using the ideal considerations.
机译:本文介绍了使用有限元法通过使用有限元方法来建模了物理疗法超声换能器的造型。 通过使用瑞利,称为&#x201c的方法来提出理想的排放。活塞在挡板上的活塞” 还提出了使用有限元素的模拟以将它们与分析结果进行比较。 该模型的结果也与物理疗法传感器中的测量结果进行了比较。 结果表明,与菲涅耳区的重叠和特征参数相对于重叠的理想模型建模实际换能器的功效。 此分析后,必要性是显而易见的:使用更真实的边界条件的更多拨款模型。 结果表明,使用理想的考虑,不正确建模菲涅耳区。

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