PERANCANGAN ULANG BUSHING ARM MULTI PURPOSE VEHICLE MENGGUNAKAN FINITE ELEMENT METHOD

OCTAVIANI, ANA NUR (2025) PERANCANGAN ULANG BUSHING ARM MULTI PURPOSE VEHICLE MENGGUNAKAN FINITE ELEMENT METHOD. S2 thesis, Universitas Mercu Buana Jakarta.

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Abstract

Bushing arms often fail due to various factors such as the use of unsuitable materials, poor road quality, and lack of regular maintenance as well as external factors such as extreme temperatures, corrosion exposure, and overpressure. This study designed and optimized material for the bushing arm for the MPV type of car, with the aim of designing an innovative bushing arm with better durability and higher safety factors than the previous design. This research was conducted on two types of materials, namely Natural Rubber (NR) and Ethylene Propylene Diene Monomer (EPDM) where both types of materials were applied to three new designs of bushing arms. Both materials received phosphoric acid treatment with a concentration of 15%. The analysis carried out on NR and EPDM materials consisted of analysis of tensile strength, hardness and microstructure, while the design of the bushing arm was tested for tension, strain, deformation, and safety factor as well as lifecycle using the Finite Element Method (FEM) in ANSYS Software. The results of the experiment on rubber materials have a tensile strength NR of 20.44% and EPDM of about 23.8% after immersion, and for the stretch value the NR decrease is 38.3% and EPDM is about 17.43%. The decrease in NR violence reached 19.2%, while EPDM was only around 4.81%. The results of the microstructure with magnification of 20x, 50x and 100x of both types of rubber also showed that not many changes could be observed and the new design simulation showed that design C was more effective in all structural parameters, namely total deformation -20.27%, equivalent elastic strain -60.8%, maximum shear elastic strain -64.46%, equivalent stress -86.9%, maximum shear stress - 86.98%, service life increased by 8.62%, and safety factor increased by 10.21%. It can be concluded that design C is suitable for improving the stability of the bushing arm Further research can be focused on hybrid materials, experimental validation, design optimization, environmental influence, and program-based predictions. Kata kunci: Bushing arm, NR, EPDM, Finite Element Method, fatigue tool Bushing arm sering kali mengalami kegagalan akibat berbagai faktor seperti penggunaan material yang tidak sesuai, kualitas jalan yang buruk, dan kurangnya perawatan rutin serta faktor eksternal seperti suhu ekstrem, paparan korosi, dan tekanan berlebih. Penelitian ini melakukan perancangan dan optimasi material terhadap bushing arm untuk jenis mobil MPV, dengan tujuan merancang bushing arm inovatif dengan ketahanan lebih baik serta faktor keamanan yang lebih tinggi dibandingkan design sebelumnya. Penelitian ini dilakukan pada dua jenis material yaitu Natural Rubber (NR) dan Ethylene Propylene Diene Monomer (EPDM) dimana kedua jenis material tersebut diterapkan pada tiga rancangan baru dari bushing arm. Kedua material tersebut mendapat perlakuan asam fosfat dengan konsentrasi 15%. Analisis yang dilakukan pada Material NR dan EPDM terdiri dari analisis kekuatan tarik, kekerasan dan struktur mikro, sedangkan rancangan bushing arm diuji tegangan, regangan, deformasi, dan safety factor serta lifecycle menggunakan Finite Element Method (FEM) pada Software ANSYS. Hasilnya eksperimen pada material karet kekuatan tarik tegangannya NR sebesar 20,44% dan EPDM sekitar 23,8% setelah perendaman,dan untuk nilai regangannya penurunan NR sebesar 38,3% dan EPDM sekitar 17,43% . Penurunan kekerasan NR mencapai 19,2%, sedangkan EPDM hanya sekitar 4,81%. Hasil struktur mikro dengan perbesaran 20x, 50x dan 100x dari kedua jenis karet pun menunjukkan bahwa tidak banyak perubahan yang dapat teramati dan simulasi rancangan baru menunjukkan design C hasilnya lebih efektif disemua parameter struktural yakni deformasi total -20,27%, equivalent elastic strain -60,8%, maximum shear elastic strain -64,46%, equivalent stress -86,9%, maximum shear stress -86,98%, umur pakai naik 8,62%, dan safety factor naik sebesar 10,21%. Dapat disimpulkan design C cocok untuk meningkatkan kestabilan dari bushing arm Penelitian selanjutnya bisa difokuskan pada material hybrid, validasi eksperimental, design optimasi, pengaruh lingkungan, dan prediksi berbasis program. Kata kunci: Bushing arm, NR, EPDM, Finite Element Method, fatigue tool

Item Type:	Thesis (S2)
Call Number CD:	CD/558. 25 009
NIM/NIDN Creators:	55823010001
Uncontrolled Keywords:	Bushing arm, NR, EPDM, Finite Element Method, fatigue tool
Subjects:	500 Natural Science and Mathematics/Ilmu-ilmu Alam dan Matematika > 500. Natural Science and Mathematics/Ilmu-ilmu Alam dan Matematika > 502 Miscellany of Nature Sciences/Aneka Ragam tentang Ilmu Pengetahuan Alam > 502.8 Auxiliary Techniques and Procedures; Apparatus, Equipment, Materials/Teknik dan Prosedur Bantu; Peralatan, Peralatan, Bahan 600 Technology/Teknologi > 620 Engineering and Applied Operations/Ilmu Teknik dan operasi Terapan > 621 Applied Physics/Fisika terapan > 621.8 Machine Engineering, Machinery/Teknik Mesin
Divisions:	Pascasarjana > Magister Teknik Mesin
Depositing User:	khalimah
Date Deposited:	31 Jul 2025 07:51
Last Modified:	31 Jul 2025 07:51
URI:	http://repository.mercubuana.ac.id/id/eprint/96425

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