Analisis Kekuatan dan Fatigue stress pada Chassis Sepeda Listrik E-BYITS Berdasarkan Standar ISO

Febrianto, Timothy Alfa (2026) Analisis Kekuatan dan Fatigue stress pada Chassis Sepeda Listrik E-BYITS Berdasarkan Standar ISO. Diploma thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Meningkatnya kesadaran akan pentingnya transportasi ramah lingkungan mendorong pengembangan kendaraan berbasis energi listrik sebagai alternatif pengganti kendaraan berbahan bakar fosil. Sepeda listrik E-BYITS hadir sebagai salah satu solusi mobilitas berkelanjutan di lingkungan kampus ITS dengan intensitas pemakaian yang tinggi, sehingga menuntut rangka memiliki kekuatan struktur dan ketahanankelelahan yang memadai agar tetap aman digunakan dalam jangka panjang. Penelitian ini bertujuan untuk menganalisis pengaruh variasi geometri chassis terhadap respons struktural serta menentukan ketebalan material yang paling optimal berdasarkan standar ISO 4210-6. Variasi geometri yang dianalisis meliputi Opsi 1, Opsi 2, Opsi 3, dan Opsi 4. Analisis dilakukan menggunakan metode Finite Element Analysis (FEA) dengan simulasi transien struktural pada ANSYS Workbench menggunakan material baja karbon ASTM A36. Pembebanan siklik diterapkan pada tiga skenario sesuai ISO 4210-6, yaitu uji beban horizontal pada area Fork, uji beban vertikal pada area sadel, dan uji gaya kayuhan pada area pedal. Hasil penelitian menunjukkan bahwa variasi geometri chassis memberikan pengaruh signifikan terhadap distribusi tegangan dan deformasi. Desain Frame 1 dengan Fork 2 memiliki performa terbaik dengan tegangan maksimum 220,79 MPa, masih di bawah batas luluh material 250 MPa pada seluruh skenario pembebanan. Optimasi ketebalan material pada desain terpilih menunjukkan bahwa konfigurasi awal V1 merupakan yang paling optimal. Penambahan ketebalan pada V2 justru menyebabkan lonjakan tegangan ekstrem hingga 518,18 MPa pada area pedal, sedangkan pengurangan ketebalan pada V3 menghasilkan tegangan 405,46 MPa pada area yang sama, membuktikan bahwa semakin tebal material suatu komponen struktur belum tentu meningkatkan kekuatan struktur secara keseluruhan.
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The growing awareness of the importance of environmentally friendly transportation has driven the development of electric-based vehicles as an alternative to fossil fuel-powered vehicles. The E-BYITS electric bicycle serves as one of the sustainable mobility solutions on the ITS campus with a high intensity of usage, requiring the frame to have adequate structural strength and fatigue resistance to remain safe for long-term use. This study aims to analyze the effect of chassis geometry variations on structural response and to determine the most optimal material thickness based on ISO 4210-6 standards. The geometry variations analyzed include Option 1, Option 2, Option 3, and Option 4. The analysis was carried out using the Finite Element Analysis (FEA) method with transient structural simulation in ANSYS Workbench using ASTM A36 carbon steel material. Cyclic loading was applied in three scenarios in accordance with ISO 4210-6, namely horizontal load testing on the Fork area, vertical load testing on the saddle area, and pedaling force testing on the pedal area. The results show that chassis geometry variations have a significant influence on stress distribution and Deformation. Frame 1 with Fork 2 demonstrated the best performance with a maximum stress of 220.79 MPa, still below the material yield strength of 250 MPa across all loading scenarios. Material thickness optimization on the selected design indicates that the initial configuration V1 is the most optimal. Increasing the thickness in V2 actually caused an extreme stress spike of up to 518.18 MPa in the pedal area, while reducing the thickness in V3 resulted in a stress of 405.46 MPa in the same area, proving that a thicker material in a structural component does not necessarily increase the overall structural strength.

Item Type:	Thesis (Diploma)
Uncontrolled Keywords:	Sepeda Listrik, Chassis, Pembebanan Siklik, ISO 4210-6, Electric Bicycle, Chassis, Finite Element Analysis (FEA), Cyclic Loading
Subjects:	T Technology > TS Manufactures > TS176 Manufacturing engineering. Process engineering (Including manufacturing planning, production planning)
Divisions:	Faculty of Vocational > Mechanical Industrial Engineering (D4)
Depositing User:	Timothy Alfa Febrianto
Date Deposited:	17 Jul 2026 02:59
Last Modified:	17 Jul 2026 02:59
URI:	http://repository.its.ac.id/id/eprint/134983

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