Singularitas Efek Tepi dari Diskontinuitas Saluran pada Resonator Silinder Tipe-H

R. Yosi Aprian Sari; Agung Bambang Setio Utomo; Mitrayana Mitrayana; Danang Lelono; Supardi Supardi

doi:10.21831/jsd.v11i1.48872

Singularitas Efek Tepi dari Diskontinuitas Saluran pada Resonator Silinder Tipe-H

R. Yosi Aprian Sari, Jurusan Pendidikan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Yogyakarta, Indonesia
Agung Bambang Setio Utomo, Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Gadjah Mada, Indonesia
Mitrayana Mitrayana, Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Gadjah Mada, Indonesia
Danang Lelono, Departemen Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Gadjah Mada, Indonesia
Supardi Supardi, Jurusan Pendidikan Fisika, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Negeri Yogyakarta, Indonesia

10.21831/jsd.v11i1.48872

Abstract

Diskontinuitas saluran pada resonator silinder tipe-H sangat mempengaruhi perambatan gelombang akustik di dalamnya yang menimbulkan singularitas di ujung luas penampang resonator yang lebih kecil. Singularitas efek tepi ini memunculkan pola osilasi sehingga dapat mengurangi nilai koefisien transmisi akustik. Tujuan dari penelitian ini adalah menentukan desain optimal resonator dan frekuensi resonansinya dengan mempertimbangkan pengaruh diskontinuitas saluran. Metode yang digunakan dalam penelitian ini adalah simulasi lewat metode matriks transmisi (MMT) dan optimasi menggunakan algoritma genetika (AG). Adapun hasil yang diperoleh dalam penelitian ini adalah panjang buffer (l_buf )=48,8 mm, panjang resonator (l_res )=102,5 mm, jari-jari buffer (r_buf )=9,2 mm, dan jari-jari resonator (r_res )=2,9 mm, serta nilai frekuensi resonansi f=1610,6 Hz.

Keywords

singularitas efek tepi; resonator silinder tipe-H; diskontinuitas; optimasi

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DOI: https://doi.org/10.21831/jsd.v11i1.48872