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김진수(Jinsu Kim),노홍승(Hong Seong Roh),민연주(Yeonjoo Min),허성호(Sung-Ho Hur),신승진(Seungjin Shin),장인권(In Gwun Jang) 한국자동차공학회 2017 한국 자동차공학회논문집 Vol.25 No.5
There is a growing demand for commercial vehicles with a lightweight design due to fuel costs and environmental regulations. In this study, a bulk trailer is selected with the axle, suspension arm, and 5th wheel removed for simplification. Three extreme driving conditions when fully loaded are considered for the loading boundary conditions. Compliance minimization with a mass constraint is conducted in order to determine a lightweight design under these boundary conditions. Finally, based on the optimized design and consultation with field experts, a pilot model is determined and manufactured. This revised model can successfully achieve 14 % mass reduction in a bulk trailer compared with an original model.
Lightweight Design of the Stub Axle Using Topology Optimization
김진수(Jinsu Kim),노홍승(Hong Seong Roh),민연주(Yeonjoo Min),허성호(Sung-Ho Hur),장인권(In Gwun Jang) Korean Society for Precision Engineering 2018 한국정밀공학회지 Vol.35 No.7
This study reviews the assumption that the lightweight design of commercial vehicles is significant from the aspect of the anticipated fuel consumption and environmental regulations that are consequently applicable to those vehicles. Generally speaking, it is noted that among the numerous trailer components, a stub axle, which is designed to independently operate as an integral part of trailer’s suspension, can play an important role in increasing the shipping capacity of a box trailer. For this reason, because each stub axle is comparatively a heavy unit in itself, and a total of six stub axles are mounted in a box trailer, the lightweight design of a stub-axle is noted as an essential factor to reduce the whole weight of a trailer. For a finite element analysis, an original CAD model is modified through removing a chamber, airbag, axle drum, bearing and pivot on a vehicle. In addition, the loading conditions are imposed considering three extreme driving conditions and the effects are studied when in the event of review of a fully loaded in a box trailer. A topology optimization is conducted to determine a lightweight design for minimizing compliance under these boundary conditions.