شبیه‌سازی و محاسبه فشار انفجار مدفون در خاک‌های ماسه‌ای و ارائه روابط فشار با روش RSM

نوع مقاله : مقاله پژوهشی

نویسندگان

مجتمع دانشگاهی پدافند غیرعامل، دانشگاه صنعتی مالک اشتر، ایران

چکیده

امروزه با توجه به گسترش تهدیدات امنیتی لزوم توجه به الزامات پدافند غیرعامل بیش‌ازپیش احساس می‌گردد. ازآنجایی‌که سازه‌های مهم و حساس معمولاً به‌صورت زیرزمینی طراحی و اجرا می‌گردند، جهت طراحی ایمن و اقتصادی این سازه­ها، لازم است تا برآورد کمی مناسبی از میزان فشار انفجار مدفون در انواع محیط­های زیرزمینی حاصل شود. به‌همین منظور، در این پژوهش به بررسی میزان فشار انفجار مدفون در انواع خاک‌های ماسه‌ای پرداخته‌شده است. مدل عددی پیشنهادی در نرم­افزار اجزای محدود اتوداین ساخته‌شده و پس از صحت­سنجی این مدل پیشنهادی با تست­های آزمایشگاهی، فشار حاصل از انفجار مدفون در انواع خاک‌های ماسه­ای استخراج‌شده است. در ادامه، با مقایسه خروجی­های این تحقیق با نتایج روابط دستورالعمل 1- 855- 5 TM، ارزیابی دقت روابط TM انجام‌شده است. در انتها، با استفاده از روش سطح پاسخ (RSM)، روابطی با دقت مناسب جهت محاسبه فشار در خاک‌های ماسه­ای ارائه ‌شده است.

کلیدواژه‌ها

عنوان مقاله [English]

The Simulation and Calculation of Buried Blast Pressure in Sandy Soils and the Presentation of Pressure Relationships by RSM Methodology

نویسندگان [English]

  • Seied Ahmad Hosseini
  • navid manafi
faculty of passive defense, Malek Ashtar University of Technology, Iran
چکیده [English]

Today, with the spread of security threats, considering passive defense requirements has become more tangible. Since important and sensitive structures are usually designed and executed underground, for a safe and economical design of such structures, it is necessary to obtain a good quantitative estimate of the amount of buried explosion pressure in a variety of underground environments. For this purpose, in this study, the amount of blast pressure buried in different types of sandy soils has been investigated. The proposed numerical model has been made in Ansys- Autodyn finite element software and after verification of this proposed model with laboratory tests, the pressure from the buried explosion in various sandy soils has been extracted. Then, by comparing the outputs of this research with the results of the relations of TM 5-855-1 instruction, the accuracy of TM relations has been evaluated. Finally, to calculate the pressure in sandy soils with appropriate accuracy, several relationships have been presented using the response surface methodology (RSM).

کلیدواژه‌ها [English]

  • Buried Blast Load
  • Sandy Soil
  • TM 5-855-1 Instruction
  • Ansys- Autodyn Software
  • RSM

مراجع

  1. “Fundamentals of Protective Design for Conventional Weapons”; US Department of the Army, Technical Manual, TM. 1986, 1, 5-855.##
  2. Leong, E. C.; Anand, S.; Cheong, H. ; Lim, C. H. “Re-examination of Peak Stress and Scaled Distance due to Ground Shock”; Int. J. Impact Eng. 2007, 34,1487-1499.##
  3. Ambrosini, D.; Luccioni, B. “Effect of Underground Explosions on Soil and Structures”; Undergr. Space.2019, 5, 324-338.##
  4. Wang, Z.; Lu, Y. “Numerical Analysis on Dynamic Deformation Mechanism of Soils under Blast Loading”; Soil Dyn. Earthq. Eng. 2003, 23, 705-714.##
  5. Wang, Z.; Lu, Y.; Bai, Ch. “Numerical Simulation of Explosion-Induced Soil Liquefaction”; Finite Elem. Anal. Des. 2011, 47, 1079-1090.##
  6. De, A. “Numerical Simulation of Surface Explosion over Dry Cohesionless Soil”; Comput. Geotech. 2012, 43, 72-79.##
  7. Westine, P. S.; Friesenhahn, G. J. “Free-field Ground Shock Pressures from Buried Detonations in Saturated and Unsaturated Soils”; Southwest Foundation for Research and Education San Antonio Tx, 1983.##
  8. Gholizad, A.; Rajabi, M.; Yazdan, H. “Simulation of Subsurface Explosion in Sandy Soil by Modifying the Sand Density Equation Equation”; 2nd National Conference on Structure-Earthquake, 2012. (In Persian).##
  9. Feldgun, V.; Karinski, Y.; Yankelevsky, D. “The Effect of an Explosion in a Tunnel on a Neighboring Buried Structure”; Tunnel. Underground Space Technol. 2014, 44, 42–55.##
  10. Jiang, N.; Zhou, C. “Blasting Vibration Safety Criterion for a Tunnel Liner Structure”; Tunnel. Underground Space Technol. 2012, 32, 52–57.##
  11. Papanikolaou, V. K.; Kappos, A. J. “Practical Nonlinear Analysis of Reinforced Concrete Tunnel Linings”; Tunnel. Underground Space Technol. 2014, 40, 127–140.##
  12. Blanchat, T. K.; Davie, N. T.; Calderone, J. J. “Development of Explosive Event Scale Model Testing Capability at Sandia's Large Scale Centrifuge Facility”; No. SAND-98-0270. Sandia National Laboratories, Albuquerque, NM (United States), 1998.##
  13. Ohno, T. “Study on Structural Response to Explosion of Explosives and Blast Resistance Design”; National Defense Academy of Japan, 2008.##
  14. Nagy, N.; Mohamed, M.; Boot, J. C. “Nonlinear Numerical Modeling for the Effects of Surface Explosions on Buried Reinforced Concrete Structures”; Geomechanics Eng. 2010, 2, 1-18.##
  15. Yang, Z. “Finite Element Simulation of Response of Buried Shelters to Blast Loadings”; Finite Elem. Anal. Des. 1997, 24, 3, 113-132.##
  16. Castro, J. S.; Bryson, L. S.; Gamber, N. K.; Lusk, B. T. “Numerical Modeling of Subsurface Blasting”; Pan-Am CGS, Geotechnical Conference, 2011.##
  17. Rogers, G. F. C.; Mayhew, Y. R. “Thermodynamic and Transport Properties of Fluids”; John Wiley & Sons, 1995.##
  18. Lee, E.; Finger, M.; Collins, W. “JWL Equation of State Coefficients for High Explosives”; No. UCID-16189. Lawrence Livermore National Lab.(LLNL), Livermore, CA (United States), 1973.##
  19. Laine, L.; Sandvik, A. “Derivation of Mechanical Properties for Sand”; Proc. 4th Asia-Pacific Conf. Shock and Impact Loads on Structures, 2001, 361, 368.##
  20. Gunst, R. F. “Response Surface Methodology: Process and Product Optimization Using Designed Experiments”; Technometrics 1996, 38, 284-286.##
  21. Hosseini, S. A.; Tavana, A.; Abdolahi, S. M.; Darvishmaslak, S. “Prediction of Blast-induced Ground Vibrations in Quarry Sites: a Comparison of GP, RSM and MARS”; J. Soil Dyn. 2019, 119, 118-129.##
  22. Laine, L. “Study of Planar Ground Shock in Different Soils and Its Propagation around a Rigid Block”; 77th Shock and Vibration Symposium, 2006.##
  23. Grujicic, M.; Bell, W. C. “A Computational Analysis of Survivability of a Pick-up Truck Subjected to Mine Detonation Loads”; Multidiscip. Model. Mater. Struct. 2011, 7, 386-423.##
  24. Grujicic, M.; Pandurangan, B.; Coutris, N.; Cheeseman, B. A.; Roy, W. N.; Skaggs, R. R. “Derivation, Parameterization and Validation of a Sandy-Clay Material Model for Use in Landmine Detonation Computational Analyses”; . Mater. Eng. Perform. 2010, 19, 434-450.##
  25. Grujicic, M.; Pandurangan, B.; Summers, J. D.; Cheeseman, B. A.; Roy, W. N.; Skaggs, R. R.  “Application of the Modified Compaction Material Model to the Analysis of Landmine Detonation in Soil with Various Degrees of Water Saturation”; Shock Vib. 2007, 14, 1-21.##

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سابقه مقاله

  • تاریخ دریافت: 04 بهمن 1399
  • تاریخ بازنگری: 04 آبان 1400
  • تاریخ پذیرش: 04 آبان 1400
  • تاریخ انتشار: 01 آبان 1400

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