PSI - Issue 33

Ilham Widiyanto et al. / Procedia Structural Integrity 33 (2021) 27–34 Widiyanto et al. / Structural Integrity Procedia 00 (2019) 000–000

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5. Overall discussion Based on the results of simulations that have been done, the results show that the GT40 chassis has a von Mises stress. The minimum result is 9.082 x 10 -8 MPa and a maximum of 181,7 MPa. For Strains, the result of the minimum value is located at normal YY of -6.649 x 10 -4 , and the maximum is located at normal YY of 3.179 x 10 -4 . The maximum magnitude displacement of the GT40 chassis is 0.441 mm. The result of the reaction force of GT40 chassis, maximum magnitude is 548.9 N. The result of the safety factor, maximum magnitude at 15 and minimum at 1.14, was adopted as a mean value from the range of factors for very accurate calculations, uniform material, and fine design (Oswald, 2007). Very accurate simulated calculations of these frames with the finite element method have been conducted for several years. This allowed for a tremendous experience which translates into the quality of calculations. The results of calculations are verified experimentally on stationary test facilities or test tracks. The structural elements of this type of frame require the use of metal sheets made of only one type of steel with particular controlled chemical composition and specific mechanical properties (Szulc et al.,2016). The proper construction documentation, high level of technology and workshop equipment, and well-prepared and trained crew are all critical factors. Moreover, the manufactured products should be subjected to partial and final inspections with a high-quality standard. This result can be seen with a color orientation after the process simulation is done. 6. Conclusions There are several types of chassis, one of which is used in this study, namely monocoque chassis. After going through the design process, the analysis used is the FEA with static loading. The analysis carried out aims to determine how many results from displacement, strain, stress, reaction force, and safety factor. The results show that the GT40 chassis has a minimum von-Mises Stress of 9.082 x 10 -8 MPa and a maximum of 181.7 MPa. The result of the minimum value is located at the Y axis of of -6.649 x 10 -4 and the maximum is located at the Y axis of 3.179 x 10 -4 . The maximum magnitude of the displacement is 0.441 mm, while the maximum magnitude reaction force is 548.9 N. The maximum safety factor is at 15 and minimum at 1.14. This research should be carried out with a comparison of the materials used, so they can find out which material is the most suitable for the designed chassis. References Ary, A.K., Prabowo, A.R., Imaduddin, F., 2020. Structural assessment of alternative urban vehicle chassis subjected to loading and internal parameters using finite element analysis. Journal of Engineering Science and Technology 15, 1999-2022. Bathe, K.J., 2014. Finite Element Procedures. Prentice Hall, New Jersey, US. Beermann, H.J., 1989. The Analysis of Commercial Vehicle Structures. Mechanical Engineering Publications Ltd., London, UK. Burdekin, F. M. (2007). General principles of the use of safety factors in design and assessment. Engineering Failure Analysis , 14 (3), 420–433. Caesar, B.P.P., Hazimi, H., Sukanto, H., Prabowo, A.R., 2020. Development of novel design and frame structural assessment on mitutoyo’s auto checking hardness machine using reverse engineering approach: Series HR-522 hardness tester. Journal of Engineering Science and Technology 15, 1296-1318 Cook, R.D., 1995. Finite Element Modeling for Stress Analysis. John Wiley & Sons, New Jersey, US. Ghalazy, N.M., 2014. Applications of finite element stress analysis of heavy truck chassis: survey and recent development. Journal of Mechanical Design and Vibration 2, 69–73. Goodnow, F. and Zalulec, M., (2004), 2005 Ford GT – Melding the Past and the Future. SAE Technical Paper, 2004-01-1251. He, J., Fu, Z.F., 2001. Overview of modal analysis. Modal Analysis. Butterworth-Heinemann, Oxford, UK. Lui, E. M., & Oguzmert, M. (2004). Structural analysis. In The Engineering Handbook, Second Edition . https://doi.org/10.1016/b978-0-12-809264 4.00007-0 Nugroho, U., Anis, S., Kusumawardani, R., Khoiron, A.M., Maulana, S.S., Irvandi, M., Mashdiq, Z.P., 2018. Frame analysis of UNNES electric bus chassis construction using finite element method. AIP Conference Proceedings, 1941, 020017. Ozes, C., Kuralay, N., 2002. Stress analysis of a truck chassis with riveted joints. Finite Elements in Analysis and Design 38, 1115-1130. Prabowo, A.R., Laksono, F.B., Sohn, J.M., 2020. Investigation of structural performance subjected to impact loading using finite element approach: case of ship-container collision. Curved and Layered Structures 7, 17-28. Salzano, A., Klang, E., 2009. Design, Analysis and Fabrication of a Formula SAE Chassis. North Carolina State University, North Carolina, US. Spinelli, D. M., Simões, S., Gonçalves, A.A., Bothe, K., 2001. Modular bus chassis development using modern simultaneous engineering tools. SAE Technical Papers, 2001-01-3827. Veloso V., Magalhães H.S., Bicalho G.I., Palma E.S., 2009, Failure investigation and stress analysis of a longitudinal stringer of an Automobile Chassis. Engineering Failure Analysis 16, 1696-1702.