Design, modelling and simulation of biocompatible poly methyl methacrylate polymer-based inside-mouth support for microphone using finite element analysis in ANSYS workbench software.

This research article presents the design and development of a custom-made inside-mouth support for microphone placement, aiming to improve sound quality and minimize background noise. The support was designed to ensure proper articulation and pronunciation. To ensure biocompatibility, a medical-grade polymer poly methyl methacrylate (PMMA) was chosen due to its low melting temperature and ability to manufacture clear and transparent pieces suitable for 3D printing. The design of the support is done using Fusion 360, and later analysis is done on the support in ANSYS workbench software to analyse the behaviour of the support subjected to dynamic and static loads. The support was subjected to transient structural, explicit dynamic, and static structural analysis to investigate its response to different loading conditions and evaluate its performance in real-world scenarios. The transient response of the PMMA material was found to be safer and more reliable. The maximum average values of total deformation, maximum principal elastic strain, and maximum principal stress obtained from the transient structural analysis were 3.5258e-003 mm, 2.1363e-005 mm/mm, and 0.035209 MPa, respectively. The explicit dynamic analysis resulted in maximum average values of 1.2917e-003 mm, 5.9808e-006 mm/mm, and 5.3201e-003 MPa, respectively. The static structural analysis gave average values of 2.7015e-003 mm, 2.0882e-005 mm/mm, and 2.9142e-002 MPa, respectively. Additionally, the support was tested using two different materials, silicone rubber, and PMMA, for comparison. The results showed that PMMA had several advantages over silicone rubber, including lower total deformation and maximum principal stress, making it more reliable for use in real-world scenarios. In conclusion, the inside-mouth support designed and developed in this study can improve sound quality and minimize background noise in areas where high noise predominates. Using PMMA as the material of choice for the support ensures biocompatibility and improves the overall performance and reliability of the device. [ABSTRACT FROM AUTHOR]