가상차량 벨지안 주행해석을 통한 CTBA 내구하중 민감도 연구

With recent trends of the vehicle company reducing the number of making prototype and reliability test to reduce vehicle developing cost and time, VPG (Virtual Proving Ground) is a very useful and effective method to evaluate the vehicle performances such as Ride & Handling, NVH and durability in the concept design stage without vehicle prototype. This paper proposes the prediction method of the fatigue load changing with respect to the vehicle design variables such as body mass and inertia, ride height, wheel tread/base and tire aspect ratio/size using a VPG correlated with wheel input load of test results. This study also presents an application example of the developing vehicle shared same platform with base model without real vehicle prototype test using these parameter studies.