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All Journal ROTOR: JURNAL ILMIAH TEKNIK MESIN JURNAL CRANKSHAFT Abdimas Universal Scientific Journal of Mechanical Engineering Kinematika Jurnal Mekanik Terapan AMMA : Jurnal Pengabdian Masyarakat
Rijal Surya Rahmany
Institut Teknologi Kalimantan
Humanities Automotive Engineering Chemistry Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Economics, Econometrics & Finance Education Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Social Sciences

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Journal : ROTOR: JURNAL ILMIAH TEKNIK MESIN

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OPTIMIZATION OF MOUNTAIN BIKE FRAME DESIGN: LOADING VARIATIONS USING HIGH STRENGTH CARBON Ivan Wiyarta Cakra Sujana, I Made; Batubara, Yongki Christandi; Rahmany, Rijal Surya
ROTOR Vol. 17 No. 2 (2024)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/rotor.v17i2.52991

Abstract

Mountain bikes have become a popular mode of transportation and recreation among extreme sports enthusiasts. A strong and lightweight frame design is crucial to support performance and ensure rider safety, especially in challenging terrain conditions. This study aims to explore the optimization of mountain bike frame design with a focus on the use of high-strength carbon materials. The research evaluates the performance and durability of the frame through Von Mises stress analysis, displacement, and safety factor under load variations of 65 kg, 70 kg, and 75 kg. The analysis results show that the stress increases with the load, from 7.298 MPa at 65 kg to 8.421 MPa at 75 kg. Displacement also increases, from 0.004982 mm to 0.005748 mm. The safety factor remains above 15, indicating a high safety margin for the material. These findings suggest that although stress and deformation increase, the frame design still meets the strength standards required for user safety. This research contributes significantly to the development of more efficient, sustainable bicycles, and serves as a reference for manufacturers in designing safe and comfortable products. Recommendations for further testing include dynamic load analysis to understand the frame's behavior under real-world usage conditions. Keywords: AL 6061, Mountain Bike Frame, Simulation
DESIGN OF A 100 KG CAPACITY WORKING LIFT CART FOR SMALL-SCALE INDUSTRIAL APPLICATIONS Apriandi, Riyki; Rahmany, Rijal Surya
ROTOR Vol. 17 No. 2 (2024)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19184/rotor.v17i2.53085

Abstract

To accommodate heavy tool movement, forklifts are commonly used. However, a forklift is too large for use in confined workspaces within small industries. Therefore, it is proposed that a 'Working Lift Cart' be designed with a compact size. This research aims to design and develop a compact lift cart that offers flexible movement and reduces operational risks compared to existing forklift products. The method employed in this research involves a direct analysis of two proposed product plan concepts. The proposed concepts are selected based on a needs analysis. The chosen concept undergoes a safety risk analysis from the operator's perspective using the RULA method, while the product design is subjected to static stress analysis on the frame and the lifter. The results indicate that the second concept, with greater operational flexibility, is chosen. The RULA analysis, conducted using CATIA software, indicates that operating with a remote controller is significantly safer and less prone to injury. However, manual operation is retained for usability purposes. The analysis of the frame structure and lifter shows that the proposed design is safe for a 100 kg load on the lifter. Keywords: Working Lift Cart, Design, RULA, Static Stress Analysis
Co-Authors Al Wafi, Rifqi ALDO, JEFRI Amba Matarru, Andre Apriandi, Riyki Batubara, Yongki Christandi Bima Jagad Saksana, Febrillian Christandi Batubara, Yongki Devy Setiorini Sa’adiyah Djafar, Alfian Fahrizul Hasmi, Achmad Gad Gunawan Halim Haliq, Ridwan Hariz Dedy Sayogi, Muhammad Haryono, Hadhimas Dwi Hasiholan Lumban Tobing, Kevin Hendi Prasetya, Bagas Hidayat, Dinda Khoirunnisa Ivan Christofel Hutabarat, Frans Jefri Aldo Jefri Aldo Julian, Lindra Rahmad Rizqi Kholiq Deliasgarin Radyantho Linda Mahmudi Syahlie, Razif Manta, Faisal Marshantya, Defiana Mungil Kurniawati, Diniar Orientius Paseru, Ricko Parsaulian Lobo Silalahi, Yonathan Qalbi AM, Chaerul Rajagukguk, Grendy Ary Krishna Rizqi Fahrezi, Dimas Saputra, Ferry Adi Setiorini Sa’adiyah, Devy Stofani, Dhio Suanggana, Doddy Suardi Sujana, I Made Ivan Wiyarta Cakra Syaharani, Destyana Putri Syaiful Umara, Muhammad Yasin, Hamzah Ibnu Yuike, Ariesta Zufadli, Muhammad Syahmi