Fatigue damage analysis in an automobile stabilizer bar

Abstract

An analysis of fatigue damage in a stabilizer bar in the front suspension (McPherson) of a passenger car was performed. A cumulative fatigue damage theory (linear damage rule) together with experimental and analytical techniques of stress analysis are used to determine the fatigue damage imposed on the stabilizer bar, under both laboratory and actual conditions. Finite element models of the stabilizer bars were used to determine the local stresses at critical regions. These stresses were then measured in the laboratory, by using strain gauges bonded on the material. The assessments of fatigue damage of the stabilizer bar under actual conditions were performed with a component mounted on a vehicle, which was driven over different road surfaces and at different velocities. The results of both experiment types are correlated and discussed.

Keywords

cumulative fatigue damage laboratory damage actual conditions damage vehicle's component fatigue

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References

Yang

Jin

Wang

A continuous low cycle fatigue damage model and its application in engineering materials

Int. J. Fatigue, 1997, 9 (10), 687–692.

Fatemi

Yang

Cumulative fatigue damage and life prediction theories: A survey of the state of the art for homogeneous materials

Int. J. Fatigue, 1998, 20 (1), 9–34.

Schütz

Fatigue life prediction—a review of the state of the art. In Proceedings of the Fourth International Conference on

Structural Failure, Product Liability and Technical Insurance, Vienna, Austria, 1992, Vol. 4, pp. 49–52.

Goswani

Low cycle fatigue life prediction—a new model

Int. J. Fatigue, 1997, 19 (2), 109–115.

Canfield

R. E.

Villaire

M. A.

The development of accelerated component durability test cycles using fatigue sensitive editing techniques. In SAE World Congress, 1992, paper 920660, pp. 69–79.

Landgraf

R. W.

Thangjitham

Reliability analysis of an automotive wheel assembly. In SAE World Congress, 1993, paper 930406, pp. 225–235.

Leese

G. E.

Mullin

R. L.

The role of fatigue analysis in the vehicle test simulation laboratory. In

Recent Developments in Fatigue Technology, 1991 (Society of Automotive Engineers, Warrendale, Pennsylvania) paper 910166, pp. 57–68.

Bastow

Howard

Car Suspension and Handling, 3rd edition, 1997, pp. 1–6 (John Wiley, New York).

SAE.

Chemicals of SAE alloy steels—SAE J404. In SAE

Handbook, Vol. 1, 1997, pp. 112–113 (Society of Automotive Engineers, Warrendale, Pennsylvania).

10.

Hoesch Handbook. Warm Geformte Federn, 1987, pp. 109–112 (Druckerei, Frankfurt) (in German).

11.

Collins

J. A.

Failure of Materials in Mechanical Design—Analysis, Prediction and Prevention, 2nd edition, 1993 (John Wiley, New York).

12.

Elsayed

E. A.

Reliability Engineering, 1996 (Addison Wesley, Longman, Inc., Reading, MA).

13.

Beer

F. P.

Russel Johnston

Mechanics of Materials, 2nd edition, 1992 (McGraw-Hill, New York).