Structural Engineering and Mechanics

  • 제5권3호
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  • Pages.221-237
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  • 1997
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  • 1225-4568(pISSN)
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  • 1598-6217(eISSN)
테크노프레스 (Techno-Press)
권호 표지
DOI QR코드

DOI QR Code

Rate-sensitive analysis of framed structures Part I: model formulation and verification

  • Izzuddin, B.A. (Department of Civil Engineering, Imperial College) ;
  • Fang, Q. (Department of Civil Engineering, Imperial College)
  • 발행 : 1997.05.25
⟨ 이전 논문 다음 논문 ⟩

초록

This paper presents a new uniaxial material model for rate-sensitive analysis addressing both the transient and steady-state responses. The new model adopts visco-plastic theory for the rate-sensitive response, and employs a three-parameter representation of the overstress as a function of the strain-rate. The third parameter is introduced in the new model to control its transient response characteristics, and to provide flexibility in fitting test data on the variation of overstress with strain-rate. Since the governing visco-plastic differential equation cannot be integrated analytically due to its inherent nonlinearity, a new single-step numerical integration procedure is proposed, which leads to high levels of accuracy almost independent of the size of the integration time-step. The new model is implemented within the nonlinear analysis program ADAPTIC, which is used to provide several verification examples and comparison with other experimental and numerical results. The companion paper extends the three-parameter model to trilinear static stress-strain relationships for steel and concrete, and presents application examples of the proposed models.

키워드

참고문헌

  1. Bodner, S.R. and Symonds, P.S. (1960), "Plastic deformations in impact and impulsive loading of beams", Proceedings of the Second Symposium on Naval Structural Mechanics, Rhode Island, USA, 488-500.
  2. CEB (1988), "Structures under impact and impulsive loading", Bulletin dInformation No. 187, Comite Euro-International de Beton, CEB.
  3. Chang, K.C., Sugiura, K. and Lee, G.C. (1989), "Rate-dependent material model for structural steel", Journal of Engineering Mechanics, ASCE, 115(3), 465-474. https://doi.org/10.1061/(ASCE)0733-9399(1989)115:3(465)
  4. Fang, Q. and Izzuddin, B.A. (1997), "Rate-sensitive analysis of framed structures. Part II: Implementation and application to steel and R/C frames", Structural Engineering and Mechanics, An Intl Journal, 5(3), 239-256. https://doi.org/10.12989/sem.1997.5.3.239
  5. Izzuddin, B.A. and Elnashai, A.S. (1993a), "Adaptive space frame analysis. Part II: Distributed plasticity approach", Proceedings of the Institution of Civil Engineers, Structures and Buildings, 99, 317-326. https://doi.org/10.1680/istbu.1993.24353
  6. Izzuddin, B.A. and Elnashai, A.S. (1993b), "Eulerian formulation for large displacement analysis of space frames", Journal of Engineering Mechanics, ASCE, 119(3), 549-569. https://doi.org/10.1061/(ASCE)0733-9399(1993)119:3(549)
  7. Izzuddin, B.A. (1991), "Nonlinear dynamic analysis of framed structures", PhD thesis, Civil Engineering Department, Imperial College, London, U.K.
  8. Malvern, L.E. (1951), "The propagation of longitudinal waves of plastic deformation in a bar of materal exhibiting a strain-rate effect", Journal of Applied Mechanics, ASME, 18(2), 203-208.
  9. Manzocchi, G.M.E. (1991), "The effect of strain-rate on steel structures", MSc dissertation, Civil Engineering Department, Imperial College, London, U.K.
  10. Perzyna, P. (1966), "Fundamental problems in viscoplasticity", Advances in Applied Mechanics, 9, 243-377. https://doi.org/10.1016/S0065-2156(08)70009-7
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  10. Beam–column element for non-linear dynamic analysis of steel members subjected to blast loading vol.33, pp.4, 2011, https://doi.org/10.1016/j.engstruct.2011.01.003
  11. Blast effects on steel columns under fire conditions vol.136, 2017, https://doi.org/10.1016/j.jcsr.2017.04.012
  12. AN IMPROVED ANALYTICAL METHOD FOR RESTRAINED RC STRUCTURES SUBJECTED TO STATIC AND DYNAMIC LOADS vol.14, pp.01, 2014, https://doi.org/10.1142/S0219455413500521
  13. Realistic Modeling of Composite and Reinforced Concrete Floor Slabs under Extreme Loading. I: Analytical Method vol.130, pp.12, 2004, https://doi.org/10.1061/(ASCE)0733-9445(2004)130:12(1972)
  14. Saturation Effect on Dynamic Tensile and Compressive Strength of Concrete vol.12, pp.2, 2009, https://doi.org/10.1260/136943309788251713
  15. An integrated adaptive environment for fire and explosion analysis of steel frames — Part II: vol.53, pp.1, 2000, https://doi.org/10.1016/S0143-974X(99)00041-3
  16. Rate-sensitive analysis of framed structures part II: implementation and application to steel and R/C frames vol.5, pp.3, 1997, https://doi.org/10.12989/sem.1997.5.3.239
  17. Behavior and simplified analysis of steel-concrete composite beams subjected to localized blast loading vol.32, pp.2, 1997, https://doi.org/10.12989/sem.2009.32.2.337
  18. Dynamic response analysis of steel frame with a sudden removal first floor column vol.34, pp.2, 1997, https://doi.org/10.3233/jifs-169407