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Abstract: Dynamic loads acting on a twin-tube hydraulic shock
absorber are derived out both in the wheel and the axle planes by
modeling mechanically car rear suspensions, and internal and external
forces of the piston rods are analyzed according to the testing data and
the practical parameters. From viewpoint of the whole car assembly, due
to the piston rods hardly perfectly placed in their positions between
suspension and body causes an additional dynamic loading. Key factors
such as road unevenness, very high car speed and severe shock induced
vibrations are studied, which lead to sudden bending moments and
dramatically increasing shock loading. All these possibilities may
easily produce one-side wear-out and tribocorrosion of the piston rods
of the rear suspensions. Valueable results presented from theoretical
and experimental analysis are systematically significant and improvement
of the shock absorbers.
Key words: One-side wear-out Suspension system System dynamics
CLC No: TH113
上海市教委重点学科基金和上海大众汽车制造有限公司资助项目.
Received 20010409, received in revised form 20010712
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