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S-K 구성방정식을 이용한 프린터용 3D Ti-6Al-4V 재료의 유동응력 결정 및 절삭력 예측
Determination of Flow Stress and Cutting Force Prediction of Ti-6Al-4V Material for 3D Printer using S-K Constitutive Equation 원문보기

한국기계가공학회지 = Journal of the Korean Society of Manufacturing Process Engineers, v.17 no.6, 2018년, pp.68 - 74  

박대균 (동아대학교 기계공학과 대학원) ,  김태호 (티엔에스머시닝) ,  전언찬 (동아대학교 기계공학과)

Abstract ▼ AI-Helper 아이콘AI-Helper

Study on the Ti-6Al-4V have been carried out using cutting simulation, and researches for cutting force and chip shape prediction have been actively conducted under various conditions. However, a 3D printer application method using Ti-6Al-4V metal powder material as a high-power method has been stud...

주제어

#S-K 구성방정식   #절삭력   #티타늄   #직교 절삭 가공   #절삭시뮬레이션   #유동응력  

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제안 방법

  • This study aimed to calculate a constant in the S–K constitutive model, apply this to a cutting simulation to predict a cutting force, verify the effectiveness of the cutting simulation by comparing the predicted cutting force with experimental data by condition, and analyze the machining characteristics by condition.
  • Thus, this study aims to calculate a constant in the S-K constitutive model, apply this to cutting simulations to predict a cutting force, verify the effectiveness of the cutting simulation by comparing the predicted cutting force with experimental data by condition, and analyze the machining characteristics by condition.
  • To compare and analyze the results data in the cutting experiment and simulation, the acquired data were curve-fitted in the cutting experiment and simulation thereby determining the mean value as the cutting force. Fig.
  • To determine the effect of the strain rate on the dynamic strain behavior of the specimen material, experiments were conducted at 0.0001/s, 0.05/s, 1700/s, 2100/s, and 1800/s (342℃) of strain rate. In addition, to determine the effect of temperature high-temperature tests were conducted at 342℃ change on the dynamic strain behavior, and 1800/s of strain rate.
  • Two-dimensional (2D) cutting tests were conducted to verify the cutting force predicted using the simulation. Fig.
  • Kim et al[4]. configured a lathe cutting system of titanium alloy based on cryogenic cooling utilizing nano-fluid MQL and liquid nitrogen, and they designed six experiments that evaluated the characteristics of lathe cutting machining according to lubrication and cooling conditions. Furthermore, Kim et al[1].
  • . measured cutting property and surface roughness of a Ti-6 Al-4V alloy using a TiAlN coating tool via PVD coating technology, and the authors observed the shape of chips produced during the cutting process thereby analyzing the chip processability. Kim[3] observed cutting heat and tool wear generated during cutting machining according to cut depth and time in medium-speed rough-cutting machining of titanium alloys.
  • Furthermore, Kim et al[1]. performed a study in dry, cryogenic cooling, and material heating and cryogenic cooling conditions, thereby deriving the cutting load and frictional coefficient between tool and chip that occurred during machining and performing comparative analyses on the derived results by each condition. Ye et al[5].
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참고문헌 (7)

  1. Kim, J. W., Kim, J. S., Lee, S. W.,"Experimental Characterization of Turning Process of Titanium Alloy Using Cryogenic Cooling and Nanofluid Minimum Quantity Lubrication", J. Korean Soc. Precis. Eng., Vol. 34, No. 3, pp. 185-189, 2017. 

    원문보기 상세보기 crossref

  2. Park, J. N., Cho, G. J., Lee, S. C., "A Study on the Cutting Characteristics of Ti-6Al-4V Alloy in Turning Operation", Journal of the Korean Society of Manufacturing Process Engineers, Vol. 3, No. 4, pp.81-87, 2004. 

  3. Kim, G. H.,"A Study on Characteristics of Cutting by Cutting Conditions in Titanium Machining", Journal of the Korean Society of Manufacturing Process Engineers, Vol. 12, No. 1, pp. 84-89, 2013. 

    원문보기 상세보기 crossref

  4. Kim, D. Y., Kim, D. M., Park, H. W., "Study on Characteristics of Cryogenic Machining Process of Titanium Alloy at a Low Cutting Speed", J. Korean Soc. Precis. Eng., Vol. 34, No. 4, pp. 237-241, 2017. 

    원문보기 상세보기 crossref

  5. Shin, H. h., Kim, J. B., "Description Capability of a Simple Phenomenological Constitutive Model for High-Strain-rate Plasticity Data", Proceedings of the Korean Society for Technology of Plasticity Conference, pp. 190-193, 2009. 

  6. An, W. J., Woo ,M. A., Noh, H. G., Kang, B. S., Kim, J., "Design and Fabrication of Split Hopkinson Pressure Bar for Acquisition of Dynamic Material Property of Al6061-T6", Korean Society of Precision Engineering, Vol. 33, No. 7, pp. 587-594, 2016. 

    원문보기 상세보기 crossref

  7. Park, D. G., Kim, T. H., Jeon, E. C., "Flow Stress Determination of Johnson-Cook Model of Ti-6Al-4V Material produce using 3D Printing Technique", Journal of the Korean Society of Manufacturing Process Engineers, Vol. 17, No. 4, pp. 64-69, 2018. 

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