A Study On Torsional Stiffness Of The Competition
Go-kart Frame
Author(s)
C.-C. Liang, C.-H. Yu & C.-C. Wu
Abstract
The construction of the competition go-kart must satisfy the philosophy of
extreme simplicity: no redundant part is added and the go-kart frame is similar to
the chassis of a sedan. Accordingly, the design of each part on the kart has to
contribute to its performance. Due to the absence of a differential gear and
suspension system, the frame must be responsible for offering proper rigidity and
torsional stiffness to the kart and producing load transfers during cornering.
Therefore, how to build a good kart frame is very important to go-kart design. In
this paper, the torsional stiffness of the go-kart frame is analyzed in detail by
using non-linear, explicit dynamic code LS-DYNA 3D. The kart frame presented
by Solazzi is adopted to be the parent model, and two design concepts are
investigated to improve the torsional stiffness of the kart frame. The first one is
the arrangement of extra members at suitable positions on the frame, and nine
different types of frame are studied. The second one is to increase the width
between two kingpins, and four different types are studied. The torsional
stiffness of each frame type is determined and compared with each other. The
result shows that the torsional stiffness of the frames with larger kingpin width is
better than those with extra members. Specifically, the one with width of 828
mm is the best type of frame, and the torsional stiffness is 31.03% higher than
the original. In addition, among the frames with extra members, the one with a
right-inclined member arranged in front of the centre member is the best design,
and the torsional stiffness is 20.18% higher than the original. It is believed that
the design concepts presented in this research will provide a useful reference for
the design and manufacturing of an optimum go-kart frame.
Keywords: go-kart, torsional stiffness, LS-DYNA 3D.
Keywords
go-kart, torsional stiffness, LS-DYNA 3D.
Related Book
Other papers in this volume
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