|تعداد مشاهده مقاله||2,478,862|
|تعداد دریافت فایل اصل مقاله||1,747,000|
|Journal of Computational & Applied Research in Mechanical Engineering (JCARME)|
|مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 07 آبان 1402 اصل مقاله (1.37 M)|
|نوع مقاله: Research Paper|
|شناسه دیجیتال (DOI): 10.22061/jcarme.2023.9238.2237|
|Department of Mechanical Engineering, Sunmoon University, Asan, Republich of Korea|
|تاریخ دریافت: 18 مرداد 1401، تاریخ بازنگری: 26 مهر 1402، تاریخ پذیرش: 07 آبان 1402|
|A hydraulically driven mold oscillator is challenging to estimate the dynamic state variables precisely. Significantly, the additional stiffness effect of hydraulic oil is variable according to operating conditions, and it is hard to formulate it as a mathematical expression. This study investigates the dynamic characteristics of a mold oscillator operated by two hydraulic cylinders with other springs and dampers to determine the non-linear effect and estimate exact dynamic state variables to improve the accuracy control. The mold oscillator was excited in either step oscillation or sine-sweeping oscillation to measure its dynamic behaviors, including mold displacement and hydraulic cylinder pressure. Due to non-linear properties, the dynamic behaviors change according to excitation conditions during sine-sweeping oscillation. Primarily, peak frequencies around 50 Hz are founded from experimental pressure-displacement data in the frequency domain. To identify the oscillating mechanisms, equivalent 1-DOF and 2-DOF mass-damper-spring models for the mold oscillator are established. The fundamental system property is derived by experiment and a Finite Element multi-body dynamics model. In addition, inverse dynamics and numerical analysis were applied to derive the unknown force from the hydraulic servo system and structural characteristics. The unknown force is related to a friction problem and an elastic deflection by relative components near the mold. For high accuracy control, the unknown force model by an additional mass-spring model that causes high-frequency vibrations at 49, 48, 47, 46, or 45 Hz was suggested to formulate the equation of motion with the additional vibrations without any arbitrary modeling process.|
|Continuous cast؛ Mold oscillator؛ Beat phenomenon؛ Self-excitation؛ Structural analysis|
 X. Z. Zhang, X. R. Zheng, Q. G. Liu, X. K. Li, and Y. M. Fang, “Investigation and application of non-sinusoidal oscillation technique of mold”, J. Iron. Steel Res. Int., Vol. 20, No. 12, pp.19-24, (2013).
 L. Zhang, “Elastic vibration research of the non-sinusoidal oscillation system for the mold of continuous casting”, Proc. of 2011 International Conference on Electronic & Mechanical Engineering and Information Technology, Vol. 6, Harbin, China, pp. 2920-2923, (2011).
 Y. H. Park and H. Park, “Dynamic characteristic analysis of mold oscillator including improved gear mesh model and cam profile for eccentric shaft”, J. Mech. Sci. Technol., Vol. 28, No. 11, pp. 4465-4473, (2014).
 W. Li, Y. Zhang, L. Yu, and J. Xiao, “Mold non-sinusoidal oscillating mode analyse and control of continuous casting machine”, Proc. of 2009 9th International Conference on Electronic Measurement & Instruments, Beijing, China, pp. 567-570, (2009).
 Y. H. Park and H. C. Park, “Dynamic characteristic analysis of hydraulic servo system in a mold oscillating mechanism”, Advanced Materials Research, Vol. 1025-1026, pp. 183-191, (2014).
 L. Smutný, R. Farana, A. Víteĉek, and D. Kaĉmář, “Mould Level Control for the Continuous Steel Casting", IFAC Proceedings Volumes, Vol. 38, No. 1, pp. 163-168, (2005).
 C. Liu and H. Jiang, “A seventh-order model for dynamic response of an electro-hydraulic servo valve", Chin. J. Aeronaut., Vol. 27, No. 6, pp. 1605-1611, (2014).
 B. G. Thomas, “On-line detection of quality problems in continuous casting of steel”. Proc. of Modeling, Control and Optimization in Ferrous and Nonferrous Industry, 2003 Materials Science and Technology Symposium, Chicago, United States, pages 29-45, (2003).
 J. Ni and L. Peng, “Nonlinear modeling and control for electro hydraulic servo system in pipe expanding process”, Proc. of the 48h IEEE Conference on Decision and Control (CDC) held jointly with 2009 28th Chinese Control Conference, Shanghai, China, pp. 6034-6039, (2009).
 X. D. Wang, M. Yao, L. Zhang, X. B. Zhang, and S. H. Chen, “Optimization of oscillation model for slab continuous casting mould based on mould friction measurements in plant trial”, J. Iron. Steel Res. Int., Vol. 20, No. 1, pp. 13-20, (2013).
 H. J. Shin, G. G. Lee, S. M. Kang, S. H. Kim, W. Y. Choi, J. H. Park, and B. Thomas, “Effect of mold oscillation on powder consumption and hook formation in ultralow-carbon steel slabs”, Iron and Steel Technology, Vol. 2, No. 9, pp. 56-69, (2005).
 O. Angatkina, V. Natarajan, Z. Chen, M. Ding, and J. Bentsman, “Modeling and control of resonance effects in steel casting mold oscillators”, Acta Mechanica, Vol. 230, pp. 2087-2104, (2019).
 C. Zhou, X. Zhang, F. Wang, and Y. Fang, “Mold Oscillating System with Optimized Non-Sinusoidal Oscillation Profile”, Metallurgist, Vol. 63, pp. 585-597, (2019).
 M. Y. Coskun, and M. İtik, “Intelligent PID control of an industrial electro-hydraulic system”, ISA transactions, (2023).
 Z. Yan, “Characteristics of high energy-efficient Electro-hydraulic power source driven by servo motor and variable pump”, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, Vol. 237, No. 7, pp. 1525-1536, (2023).
 X. J. Zhang, “Simulation and study on non-sinusoidal oscillation control system of continuous casting mold”, Proc. of Advanced Engineering Forum, Shenyang, China, Vol. 2-3, pp. 53-56, (2011).
 X. Yin and W. Chen, “Trends and development of steel demand in China: A bottom–up analysis”, Resour. Policy , Vol. 38, No. 4, (2013).
 A. Negahban and J. S. Smith, “Simulation for manufacturing system design and operation: Literature review and analysis”, J. Manuf. Syst., Vol. 33, No. 2, pp. 241-261, (2014).
 M. Yellishetty, P. G. Ranjith, and A. Tharumarajah, “Iron ore and steel production trends and material flows in the world: Is this really sustainable?”, Resour. Conserv. Recycl., Vol. 54, No. 12, pp. 1084-1094, (2010).
 B. Mochnacki and E. Majchrzak, “Sensitivity of conti-casting process with respect to cooling conditions”, Journal of Theoretical and Applied Mechanics, Vol. 40, No. 1, pp. 129-147, (2002).
 A. Y. Tsuprun, A. V. Fedosov, V. V. Kislitsa, and D. V. Pashchuk, “Study of the effect of the characteristics of harmonic mold-oscillation regimes on the surface quality of continuous-cast ingots”, Metallurgist, Vol. 56, No. 7, pp. 498-503, (2012).
 X. Yan, Y. Wang, Y. Luo, and Q. Wang, “Sensitivity analysis of torsional vibrations in mill drive train system”, Proc. of 2011 IEEE International Conference on Information and Automation, Shenzhen, China, pp. 290-294, (2011).
تعداد مشاهده مقاله: 37
تعداد دریافت فایل اصل مقاله: 14