Geometry optimization by fem simulation of the automatic changing gear

  • Ana Pavlovic Department of Industrial Engineering, University of Bologna, Bologna, Italy
  • Cristiano Fragassa Department of Industrial Engineering, University of Bologna, Bologna, Italy
Keywords: FEM Simulation; Accelerated life test; Process Control.


Electro-mechanic devices for the automatic changing of gear were tested by company using the same accelerated life testing procedures in different stages of the product development. All the tested prototypes satisfied the experimental conditions for accelerated life tests, while 50% of components coming from the first sample of serial production showed crack phenomena during the same testing procedure. This situation can be related to a large number of undefined factors: from the variability of material proprieties or in production process parameters to accidentally different conditions in testing. The complete list of all the possibilities of variance was extremely complex to be defined, recognized and verified by new sets of experimental tests. FEM calculation permitted a fast simulation of the component response under the complex experimental testing conditions, modifying the interpretation of some experimental results and correctly driving the designer toward quick improvements of product.


Bathe, K. J. (2014). Frontiers in finite element procedures & applications. In: Computational Methods for Engineering Science, (BHV Topping, ed.), Saxe-Coburg Publications, Stirlingshire, Scotland.

Cozzens, R. (2013). CATIA V5 Workbook Release V5-6R2013. Sdc Publications.

Tigh Kuchak, A.J., Marinkovic, D., & Zehn, M. (2020). Finite element model updating - Case study of a rail damper. Structural Engineering and Mechanics, 73(1), 27-35.

Karban, P., Pánek, D., Orosz, T., Petrášová, I., & Doležel, I. (2021). FEM based robust design optimization with Agros and Ārtap. Computers and Mathematics with Applications, 81, 618-633.

Lee, H. H. (2018). Finite element simulations with ANSYS Workbench 18. SDC publications.

Marinkovic, D., & Zehn, M. (2019). Survey of finite element method-based real-time simulations. Applied Sciences, 9(14), 2775.

Miltenović, A., & Banić, M. (2020). Thermal analysis of a crossed helical gearbox using FEM. Transactions of Famena, 44(1), 67-78.

Ponticel, P. (2002). Solvay AMODEL PPA for thermostat housing. Automotive Engineering International (USA), 110(6), 64.

Rama, G., Marinković, D., & Zehn, M. (2018). Efficient three-node finite shell element for linear and geometrically nonlinear analyses of piezoelectric laminated structures. Journal of Intelligent Material Systems and Structures, 29 (3), 345-357.

Slavković, R., Živković, M., & Kojić, M. (1994). Enhanced 8‐node three‐dimensional solid and 4‐node shell elements with incompatible generalized displacements. Communications in Numerical Methods in Engineering, 10(9), 699-709.

Solvay, S. A., & Amodel, P. P. A. (2004). PPA improves fuel pick-up tube’s performance. Reinforced Plastics, 48(5), doi: 10.1016/S0034-3617(04)00288-7.

Wang, S. & Wang, M.Y. (2006). A moving superimposed finite element method for structural topology optimization. International Journal for Numerical Methods in Engineering, 65(11), 1892-1922.

Wierzbicki, K., Szewczyk, P., Paczkowski, W., Wróblewski, T., & Skibicki, S. (2020). Torsional stability assessment of columns using photometry and FEM. Buildings, 10(9), 162.

Zhang, B., Li, H., Kong, L., Shen, H., & Zhang, X. (2020). Size-dependent static and dynamic analysis of Reddy-type micro-beams by strain gradient differential quadrature finite element method. Thin-Walled Structures, 148, 106496.

How to Cite
Pavlovic , A., & Fragassa, C. (2020). Geometry optimization by fem simulation of the automatic changing gear. Reports in Mechanical Engineering, 1(1), 199-205.