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Structural strength analysis of a tourist minicar knuckle using finite element analysis Agung Fauzi Hanafi; Mega Lazuardi Umar; I Gusti Ngurah Agung Satria Prasetya Dharma Yudha; Ansor Salim Siregar
Jurnal Polimesin Vol 24, No 1 (2026): February
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i1.8194

Abstract

The design of components for vehicles used in tourist areas must be efficient, safe, and economical. The steering knuckle is a vital component in the vehicle's suspension and steering systems, playing a crucial role in transferring loads, connecting the wheel to the steering mechanism, and supporting braking components. This research aims to design, analyze, and fabricate a steering knuckle for a mini tourist car with a total mass of 300 kg using plain carbon steel. The design and strength analysis were evaluated using the open-source Finite Element Analysis (FEA) software PrePoMax to investigate stress distribution, deformation, and the factor of safety. The FEA results showed a maximum Von Mises stress of 86.27 MPa, well below the material's yield strength, a maximum deformation of 0.126 mm, and a minimum safety factor of 2.72, confirming a robust design. The component was designed to accommodate a 30204 tapered roller bearing. The fabrication process, encompassing cutting, machining, and welding, successfully produced a functional prototype validated through direct installation and load testing on the vehicle. This study confirms that plain carbon steel is a reliable and economical material for structural components in lightweight vehicle applications and provides a pragmatic engineering framework for developing cost-effective automotive components.
Analisa Kekuatan Konstruksi Pad Eye Towing Hook Kapal Tugboat 27 Meter Dengan Metode Elemen Hingga Tenario Aruza Mizan; Anggra Fiveriati; M. Abdul Wahid; I Gusti Ngurah Agung Satria Prasetya Dharma Yudha; Abdul Hamid
Techno Bahari Vol. 12 No. 1 (2025): Maret
Publisher : Politeknik Negeri Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52234/tb.v12i1.342

Abstract

Towing hook merupakan alat yang digunakan untuk menghubungkan tali penarik (towing line) atau wire rope dari tugboat ke kapal atau objek yang akan ditarik. Beberapa beban tarik mengakibatkan terjadinya distribusi tegangan yang terjadi pada bagian buritan kapal dan daerah sekitar pad eye towing hook akibat gerakan menarik yang dilakukan kapal, yang dapat menimbulkan banyak masalah seperti deformasi, keretakan, kerusakan, patah dll. Analisa tersebut bertujuan untuk mengetahui nilai equivalent stress, deformation dan safety factor dari konstruksi foundation towing hook kapal tugboat, serta mengetahui letak titik kritis pada tiga variasi bracket towing hook yaitu variasi 1 bracket 100 x 100 x 12, variasi 2 bracket 100 x 100 x 16, dan variasi 3 bracket 100 x 165 x 8. Adapun hasil analisis dan perhitungan variasi 1 nilai equivalent stress sebesar 189,64 Mpa, sedangkan untuk variasi 2 nilai equivalent stress sebesar 183,56 Mpa, dan variasi 3 nilai equivalent stress sebesar 183,38 Mpa. Kriteria dari struktur Pad eye Towing Hook dari hasil simulasi yang didapat yaitu Pad eye Towing Hook dengan variasi ketiga lebih baik untuk digunakan atau dioperasikan dikarenakan nilai dari tegangan maksimum lebih kecil dan tingkat deformasi lebih rendah dibanding variasi 1 dan variasi 2.
Co-Authors Abdul Hamid Anggra Fiveriati Ansor Salim Siregar Hanafi, Agung Fauzi M. Abdul Wahid Mega Lazuardi Umar Tenario Aruza Mizan