This study is aimed to analyze the fatigue life of the commercial vehicle, which
is planned to be produced by Anadolu Isuzu company operating in the automotive
field, with the result data of the tests carried out on the virtual test
road.
Within the scope of the project, the Adams/Car model, which is a flexible vehicle
model created and verified by tests, was provided with the modal coordinate
inputs required for fatigue life analysis by performing vehicle dynamics
analysis on virtual road routes using the Virtual Proving Ground (VPG)
module.
The virtual roads on which the vehicle will be driven were determined according
to the damage scenario experienced on the real road. By using the experienced
road information and VPG module, virtual vehicle analysis was carried out at the
same distance and velocity values.
The test rig, Adams controller, and solver settings were manually adjusted to
have correct maneuvering of the Adams/Car vehicle module on the VPG roads. This
adjustment is applied manually with changing steering torque Proportional
Integral Derivative (PID) values. The purpose of this adjustment is to reduce
the path distance error.
The obtained outputs were defined as inputs to the nCode DesignLife package
program, and fatigue life analysis was performed. With the result of this
analysis, the areas where the vehicle was damaged were determined.