Investigation of Sensitivity Effect Based on Mass and Stiffness Modification in Automobile Crankshaft

Abstract:

A modeling through sensitivity analysis is one of the promising methods to investigate the dynamic characteristics of complex mechanical parts. This study aimed to investigate the effect of sensitivity based on mass and stiffness modification in automobile crankshaft as a function of natural frequency. Verification for the crankshaft model that is used in the experiment and simulation was done and both results showed good agreement and small errors percentage. The modification was also done by reducing the different percentage of crankshaft’s mass and stiffness. Partial differential analysis was used in the sensitivity analysis in order to figure out the natural frequency after every set of modification. According to the results, we also found that there were changes of sensitivity value by changes in mass value but the stiffness value remains unchanged. However, there is no significant effect of stiffness reduction on vibration was found in this research.

• Periodical: Applied Mechanics and Materials (Volumes 752-753)
• Pages: 839-844
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.752-753.839
• Online since: April 2015
• Authors: R.M.S. Zetty*, B.A. Aminudin, L.M. Aung, M.K. Khalid, H.M.Y. Norfazrina, N.M.R. Raihan
• Keywords: Automobile Crankshaft, Frequency Response Function, Natural Frequency, Sensitivity Analysis

References

[1] N. Trisovic, Eigenvalue sensitivity analysis in structural dynamics, FME Transactions, University of Belgrade, Faculty of Mechanical Engineering 35 (2007) 149-156.

[2] A. Gupta, M. Khammash, An efficient and unbiased method for sensitivity analysis of stochastic reaction networks, retrieved from Cornell University Library [http: /arxiv. org/abs/1402. 3076], (2014).

[3] K. Imai, T. Yamamoto, Identification and sensitivity analysis for multiple causal mechanisms: Revisiting evidence from framing experiments, Polit. Anal. 21- 2 (2013) 141–171.

DOI: 10.1093/pan/mps040

[4] B. A. Aminudin, J. -E. Oh, J. Y. Lee, Analysis of an in-line engine crankshaft under the firing condition, Proc. Inst. Mech. Eng. Part D J. Automob. Eng. 219- 3 (2005) 345–353.

DOI: 10.1243/095440705x6677

[5] A.B. Abu, H.J. Shim, J.E. Oh and J.Y. Lee, Analysis of the crankshaft on in-plane and out-plane mode induced structure modification, Int. Adv. Tech. Conf. 2005 (ATCi 2005).

[6] A.B. Abu, H.J. Shim, J.E. Oh, J.Y. Lee, Sensitivity analysis due to structure modification, Proc. of Malaysia Sci. Tech. Cong. (2005).