Perpustakaan Digital ITB

A dump truck is a vehicle that is usually used to transport loose materials, typically in mining or construction industries. As one of the main components of a dump truck, chassis plays a pivotal role in the overall performance of the dump truck. Chassis acts as a structural backbone of a vehicle, it integrates and supports the dump truck’s main components such as engine, tires, axles, body, cabin, trailers, etc. It is also subjected to various loads during all operation conditions. Due to the importance of a chassis, it should be reassured that the chassis is safe and strong enough to withstand loads in every operating condition. For this reason, it is necessary to do stress analysis on the structure by using finite element method. In this undergraduate final project, stress analysis were performed under several conditions. Load cases that were modeled include: (1) bending, (2) torsion, (3) combined between bending and torsion, (4) acceleration, (5) braking, and (6) cornering. The geometry was modeled using SolidWorks and the finite element analysis was carried out using ANSYS. Through this analysis, the maximum stress and critical locations where the highest stress may occur were obtained. The results of the analysis show that critical areas are located at the welding region between two parts of the rear axle mounting and at the welding region between front members and the mid vertical members. However, the front critical area is chosen to be the most critical as it occurs during normal operating condition. Hence detailed modeling of the welding area is performed in this area. The maximum stress at this area is 185.34 MPa.