Multi-surface model application to beam-columns subjected to cyclic loads

Mizuno, Eiji; Kato, Mitsuhiro; Fukumoto, Yuhshi

doi:10.1016/0143-974x(87)90002-2

Cited by 5 publications

(1 citation statement)

References 10 publications

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“…In several practical applications it may be convenient and adequate to model the material response for SSs by means of uniaxial stress–strain relationships of the Petersson and Popov multi‐surface formulation23,24. The latter employs a mixed isotropic and kinematic hardening rule and has been successfully adopted for several studies25,26. Its main advantage with respect to other simplified models, such as bilinear with or without hardening, was observed particularly in the large strain cyclic amplitudes.…”

Section: Stainless Steelsmentioning

confidence: 99%

Special metals for seismic retrofitting of steel buildings

Sarno

Elnashai

2003

Progress Structural Eng Maths

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Novel metals such as aluminium alloys, stainless steels and shape memory alloys can be used for the retrofitting of steel buildings in seismic areas. Therefore, it is useful to investigate their mechanical and physical properties along with the key issues of the material modelling. The present paper focuses on the mechanical response of such metals which are inherent to the seismic design. Furthermore, it compares their mechanical characteristics in order to assess (i) the relative merits; and (ii) the cost‐effectiveness in practical applications. Analytical formulations employed for either refined or simplified modelling are critically reviewed; advantages and disadvantages of each scheme are highlighted. Finally, several examples of practical applications of these novel metals in seismic retrofitting are discussed and further developments outlined. Copyright © 2003 John Wiley & Sons, Ltd.

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Section: Stainless Steelsmentioning

confidence: 99%

Special metals for seismic retrofitting of steel buildings

Sarno

Elnashai

2003

Progress Structural Eng Maths

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Modelling of material non‐linearities in steel structures subjected to transient dynamic loading

Elnashai

Izzuddin

1993

Earthq Engng Struct Dyn

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SUMMARYThis paper is concerned with the modelling of the behaviour of steel under cyclic and dynamic loading conditions. After a general discussion regarding the requirements for accurate and efficient modelling in dynamics, two models are described and implemented. The bilinear stress-strain constitutive relationship with kinematic hardening is widely used in many computer codes, hence is used for 'control' purposes. The multisurface plasticity model is said to exhibit the important qualities of strain hardening, softening and relaxation to a mean stress. This model is described in detail and notes on model parameter evaluation are given. A number of validation examples are presented, due to the complexity of implementation of the multisurface formulation. This is followed by comparisons between the bilinear response predictions and those of the multisurface model for cyclic and dynamic tests on beam-columns. It is concluded that in the absence of material test data under cyclic loading, the bilinear model provides acceptably accurate response predictions. However, the multisurface model provides a significantly closer fit to experimental results, due to its ability to model a yield plateau and a non-linear strain-hardening regime as well as cyclic degradation. It can also be used for new types of steel where no distinct yield point is observed.

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