Electronic Theses and Dissertation

Pelek merupakan komponen penting pada sepeda motor yang berfungsi sebagai dudukan ban dan penopang beban kendaraan serta pengendara. Perbedaan konstruksi dan material antara pelek cast wheel dan spoke wheel menyebabkan perbedaan perilaku mekanik, terutama dalam distribusi tegangan dan deformasi. Penelitian ini bertujuan membandingkan karakteristik mekanik pelek cast wheel dan spoke wheel menggunakan metode elemen hingga (FEM). Pemodelan dilakukan dengan Autodesk Inventor 2025 dan analisis numerik menggunakan Siemens FEMAP 2024.06. Material yang digunakan adalah Stainless Steel 304 untuk pelek spoke wheel dan aluminium alloy AL-772.2 untuk pelek cast wheel. Pembebanan statik sebesar 4000 N hingga 10000 N diterapkan pada model pelek utuh untuk menganalisis Von Mises Stress dan regangan. Selain itu, analisis lanjutan dilakukan pada pelek setengah dengan pembebanan 15000 N dan 20000 N untuk spoke wheel, serta 25000 N dan 30000 N untuk cast wheel guna mengidentifikasi batas awal deformasi plastis dan kegagalan material. Hasil analisis menunjukkan bahwa pelek spoke wheel mengalami deformasi plastis pada beban yang lebih rendah, sedangkan pelek cast wheel memiliki distribusi tegangan yang lebih merata dan kemampuan menahan beban yang lebih tinggi. Dengan demikian, pelek cast wheel menunjukkan performa struktural dan tingkat keamanan yang lebih baik terhadap pembebanan statik mekanik.

Motorcycle rims are essential components that function as tire supports and bear the loads of the vehicle and rider. Differences in construction and materials between cast wheel and spoke wheel rims lead to variations in mechanical behavior, particularly in stress distribution and deformation. This study aims to compare the mechanical characteristics of cast wheel and spoke wheel rims using the Finite Element Method (FEM). The rims were modeled using Autodesk Inventor 2025, and numerical analysis was performed using Siemens FEMAP 2024.06. Stainless Steel 304 was used as the material for the spoke wheel rim, while aluminum alloy AL-772.2 was used for the cast wheel rim. Static loads ranging from 4000 N to 10000 N were applied to the intact rim models to analyze Von Mises Stress and strain. Furthermore, additional analysis was conducted on half-rim models under higher static loads of 15000 N and 20000 N for the spoke wheel, and 25000 N and 30000 N for the cast wheel, in order to identify the onset of plastic deformation and material failure. The results indicate that the spoke wheel rim undergoes plastic deformation at lower load levels, whereas the cast wheel rim exhibits a more uniform stress distribution and a higher load-bearing capacity. Therefore, the cast wheel rim demonstrates superior structural performance and a higher level of safety under static mechanical loading.