The present paper introduces a method based on dynamic simulation for determining the fatigue parameters in a hydraulically driven log crane. The parameters that describe the nature of fatigue loads can be applied in order to facilitate designer work in fatigue life prediction. The detailed simulation model was built up in the ADAMS mechanical analysis software environment in which the flexible mechanism model and the equations describing the hydraulic system were combined. The complete simulation model was verified by comparing measurements to numerical results. This comparison shows that there is a clear correspondence between the simulated and measured results. The model was employed in the study of the fatigue parameters, which are formed when the crane is being loaded.

Issue Section:
Technical Papers
Keywords:
cranes, fatigue testing, simulation, hydraulic motors, stress effects
Topics:
Cranes, Fatigue, Stress, Simulation models, Simulation, Cycles
1.
Amzallag
,
C.
,
Gerey
,
J. P.
,
Robert
,
J. L.
, and
Bahuaud
,
J.
,
1994
, “
Standardization of the Rainflow Counting Method for Fatigue Analysis
,”
Fatigue
,
16
, June, pp
287
–
293
.
2.
Niemi, E., 1993, “Aspects of Good Design Practice for Fatigue-Loaded Welded Components,” In: Solin J., Marquis G., Siljander A. and Sipila S., eds., ESIS Publication No. 16, Mechanical Engineering Publications, London, pp. 331–351.
3.
Schutz, W., 1992, The Significance of Service Load Data for Fatigue Analysis, Fatigue Design 1992, V. 1, VTT Symposium 130, Solin, J., Marquis, G., Siljander A., Sipila¨ S., eds., Technical Research Center of Finland, Espoo, pp. 11–35.
4.
Niemi, E., 1992, “Fatigue Design of Welded Structure,” Konepajamies, No. 6, p. 38–41, 1992.
5.
Mikkola, A., 1997, “Studies on Fatigue Damage in a Hydraulically Driven Boom System Using Virtual Prototype Simulations,” Doctoral thesis, Lappeenranta University of Technology, Research papers 61.
6.
Piechnick, M., 1995, “Simulating Hydraulic-Driven Mechanical Systems,” 10th European ADAMS User’s Conference, November 14th–15th.
7.
Davison, P., Longmore, D., and Burrows, C., 1993, “Generation of Complex Mechanical Models in Hydraulic Systems Applications.” Proceedings of the 3rd Scandinavian International Conference on Fluid Power, May 25–26, Linko¨ping, Sweden, pp. 29–41.
8.
Ellman, A. U., Kappi, T. J., and Vilenius, M. J., 1996, “Simulation and Analysis of Hydraulic-driven Boom Mechanisms,” 9th Bath International Fluid Power Workshop, 9–11 September, England, pp. 413–430.
9.
Linjama, M., 1996, “Modelling of Flexible Hydraulic Manipulators,” Licentiate thesis, Tampere University of Technology, Finland.
10.
Yae
,
K. H.
,
Lin
,
T.
, and
Lin
,
S.
,
1994
, “
Constrained Multibody Dynamics Library Within EASY5.
,”
Simulation
,
62
, No.
5
, pp.
329
–
336
.
11.
Keskinen, E., 1994, “A Contact Dynamics Formulation for Distributed Simulation Flexible Hydromechanical Systems,” Ph.D. Thesis, Tampere University of Technology Publications No. 134.
12.
Shabana, A. A., 1998, Dynamics of Multibody Systems, 2nd ed., Wiley, New York.
13.
Rouvinen, A. J., 1995, Mikkola, A. M., and Handroos, H. M., “Coupled Simulation of a Hydromechanical System,” 10th European ADAMS Users’ Conference, Frankfurt/Niederrad Germany, November 14th–15th.
14.
Handroos
,
H. M.
, and
Vilenius
,
M. J.
,
1991
, “
Flexible Semi Empirical Models for Hydraulic Flow Control Valves
,”
ASME J. Mech. Des.
,
113
, No.
3
, pp.
232
–
238
.
15.
Handroos
,
H. M.
, and
Vilenius
,
M. J.
,
1992
, “
Flexible Semi Empirical Models for Hydraulic Flow Control Valves
,”
ASME J. Dyn. Syst., Meas., Control
,
114
, No.
4
, pp.
707
–
713
.
16.
Handroos, H. M., 1991, “A Method for Postulating Flexible Models for Individual Components for the Fluid Power Circuit Simulation,” ASME FLUCOME’91, San Francisco, August 29–31, pp. 519–525.
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 by ASME
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