ANALISIS TEGANGAN DAN FAKTOR KEAMANAN TANGKI HIDROGEN TIPE I BERBAHAN AISI 4130 MENGGUNAKAN METODE ELEMEN HINGGA

*Thoriq Muhammad Almujaddid  -  Department of Mechanical Engineering, Universitas Diponegoro, Jl. Prof. Sudarto, SH, Tembalang, Semarang, Indonesia 50275, Indonesia
Sulistyo Sulistyo  -  Department of Mechanical Engineering, Universitas Diponegoro, Jl. Prof. Sudarto, SH, Tembalang, Semarang, Indonesia 50275, Indonesia
Mohammad Tauviqirrahman  -  Department of Mechanical Engineering, Universitas Diponegoro, Jl. Prof. Sudarto, SH, Tembalang, Semarang, Indonesia 50275, Indonesia

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Abstract

Penggunaan hidrogen sebagai sumber energi alternatif yang bersih mendorong pentingnya teknologi penyimpanan bertekanan tinggi yang aman dan andal. Tangki hidrogen tipe I berbahan AISI 4130 banyak digunakan karena kekuatan mekaniknya yang tinggi, namun rentan terhadap fenomena hydrogen embrittlement (HE). Penelitian ini bertujuan menganalisis distribusi tegangan dan faktor keamanan tangki hidrogen tipe I menggunakan metode elemen hingga (FEM) pada tiga variasi tekanan internal: 30 MPa, 40 MPa, dan 50 MPa. Simulasi dilakukan menggunakan perangkat lunak berbasis FEM untuk memperoleh tegangan ekuivalen (von-Mises) dan safety factor. Hasil menunjukkan bahwa peningkatan tekanan internal menyebabkan peningkatan tegangan dan penurunan faktor keamanan. Meskipun demikian, semua variasi masih berada dalam batas aman. Studi ini memberikan kontribusi dalam memahami perilaku struktural tangki tipe I terhadap tekanan tinggi serta menjadi dasar rekomendasi desain yang lebih aman.

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Keywords: aisi 4130; faktor keamanan; fem; hidrogen; tangki tipe i; tegangan von-mises
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