Structural Steel Design to Eurocode 3 and AISC Specifications

Bernuzzi, Claudio; Cordova, Benedetto

doi:10.1002/9781118631201

Cited by 23 publications

(16 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Because EOB models that include both spin and tidal interactions are still in progress [93,94], our surrogate leaves out spin parameters. Once these models are available, adding the two spin magnitudes |S 1 | and |S 2 | for aligned spin systems for a total of five parameters will likely be straightforward using a standard grid-based interpolation scheme.…”

Section: Discussion and Future Workmentioning

confidence: 99%

Effective-one-body waveforms for binary neutron stars using surrogate models

et al. 2017

View full text Add to dashboard Cite

Gravitational-wave observations of binary neutron star systems can provide information about the masses, spins, and structure of neutron stars. However, this requires accurate and computationally efficient waveform models that take 1 s to evaluate for use in Bayesian parameter estimation codes that perform 10 7 − 10 8 waveform evaluations. We present a surrogate model of a nonspinning effective-one-body waveform model with = 2, 3, and 4 tidal multipole moments that reproduces waveforms of binary neutron star numerical simulations up to merger. The surrogate is built from compact sets of effective-one-body waveform amplitude and phase data that each form a reduced basis. We find that 12 amplitude and 7 phase basis elements are sufficient to reconstruct any binary neutron star waveform with a starting frequency of 10 Hz. The surrogate has maximum errors of 3.8% in amplitude (0.04% excluding the last 100M before merger) and 0.043 radians in phase. This leads to typical mismatches of 10 −5 -10 −4 for Advanced LIGO depending on the component masses, with a worst case match of 7 × 10 −4 when both stars have masses ≥ 2M . The version implemented in the LIGO Algorithm Library takes ∼ 0.07 s to evaluate for a starting frequency of 30 Hz and ∼ 0.8 s for a starting frequency of 10 Hz, resulting in a speed-up factor of O(10 3 ) relative to the original Matlab code. This allows parameter estimation codes to run in days to weeks rather than years, and we demonstrate this with a Nested Sampling run that recovers the masses and tidal parameters of a simulated binary neutron star system.

show abstract

Section: Discussion and Future Workmentioning

confidence: 99%

Effective-one-body waveforms for binary neutron stars using surrogate models

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The Type 1 failure mode is characterized by the formation of four plastic hinges in the T-stub flanges, two of which are on the sections over the inner edge of the inserted plates, while the other two are located at the sections corresponding to the flange-to-web connections, as shown in Figure 2a. This occurs when the strength of the T-stub is weaker and the strength of two bolts is stronger, which is partially similar to the Type 1 failure mode of traditional T-stub connections under tension [27,28]. By contrast, when the T-stub strength is greater than that of two bolts, the Type 2 failure mode appears, which is represented by the formation of two plastic hinges located at the sections corresponding to the flange-to-web connection, as well as the two bolts (see Figure 2b).…”

Section: Mechanical Modelmentioning

confidence: 72%

“…Firstly, the stiffness of the T-stub connection is determined by following the approach of an equivalent cantilever model in [25]. Secondly, the tensile bearing capacity of the T-stub connection with inserted plates is assumed to be similar to that of a conventional T-stub connection without inserted plates, so the mechanical model tension can be directly drawn upon traditional T-stub connections from previous studies [26,27]. Hence, this paper is primarily concerned with the compressive bearing capacity of the mechanical model.…”

Section: Mechanical Modelmentioning

confidence: 99%

Study on New Bolted T-Stub Connection with Inserted Plates under Axial and Cyclic Loads

Zhu

2020

Applied Sciences

View full text Add to dashboard Cite

The bolted T-stub connection joining beam with column is being widely applied. To enhance the energy dissipation capacity of conventional T-stub connections, two rectangular plates are proposed to be inserted between the T-stub and column, so that the T-stub flange can yield both under tensile and compressive loads. This study put forward a mechanical model of a new T-stub connection with inserted plates and investigated important factors that could affect its mechanical behavior through experimental tests. Thirty specimens were designed with different configurations that differed according to the existence or absence of inserted plates, the fabrication method and the width of inserted plates. These configurations were tested under axial and cyclic loading conditions, and results showed that the proposal aiming to improve the energy dissipation capacity was feasible. The mechanical model presented coincided with the test observation and data. The advent of two inserted plates elevated the load bearing capacity, stiffness and ductility of connections under compression, whereas in tension the properties were not substantially enhanced. The welded T-stub connections outperformed those cut from standard section steel. The energy dissipated by connections with inserted plates was about 150% of that by traditional connections without inserted plates. Only within a reasonable range can the increment of plate width promote the energy dissipation capacity of T-stub connections. The optimum width of plates in terms of energy consumption accounted for around 31% of the overall width of connections.

show abstract

“…The equilibrium equation (4) and the governing equation (5) are replaced by: Substitution of the displacement (6) and the imperfection (11) into (13) yields: (14) The governing equation remains linear, but is no longer homogeneous. Consider the special case n = 1 and define the sum t(x) of the imperfection g(x) and the displacement v(x).…”

Section: Behaviour Of Geometrically Imperfect Columnsmentioning

confidence: 99%

Second Order Structural Theory for the Stability Analysis of Columns

Galishnikova

Владимировна²,

Gebre

et al. 2018

Struct. Mech. Eng. Const. Build.

View full text Add to dashboard Cite

Stability analysis in civil engineering is traditionally centred on the stability of individual components of a structure, rather than on the stability of the assemblage of structural components. This may be explained by the lack of adequate tools for the stability analysis of complete structures in the past. Recently, the necessity of the development of general rational methods of stability analysis with a model of the complex structure is widely recognized. These methods should reliably predict the overall stability of the structure, the interaction between the components of the structure in providing restraint against instability of individual members, and the local stability of each individual member. Development of such theories and corresponding algorithms require a thorough investigation. The aim of this paper is to investigate the instability of single columns without large deflections by means of the second order structural theory and to study the influence of imperfections on the behaviour of such structural elements.

show abstract

Structural Steel Design to Eurocode 3 and AISC Specifications

Cited by 23 publications

References 0 publications

Effective-one-body waveforms for binary neutron stars using surrogate models

Effective-one-body waveforms for binary neutron stars using surrogate models

Study on New Bolted T-Stub Connection with Inserted Plates under Axial and Cyclic Loads

Second Order Structural Theory for the Stability Analysis of Columns

Contact Info

Product

Resources

About