Stochastic wind loading applied to container crane

Solazzi, Luigi

doi:10.5937/fmet1803299s

Cited by 4 publications

(4 citation statements)

References 17 publications

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“…After the previous analysis confirmed that the time history z(t) measured in the industrial vehicle wheel (see Figure 5b) is nonstationary and also formed by a sequence of stationary states, it was possible to apply the confidence interval of the damage in Equation (7).…”

Section: Confidence Interval Of Damage: Vehicle Wheel Datamentioning

confidence: 99%

“…All damage values were normalized to the damage 𝐷(𝑇) of the whole time history 𝑧(𝑡) . The intervals were constructed, according to Equation (7), around the total damage (solid circles) approximated by the double summation of the sample damage 𝐷(𝑇) ≅ ∑ ∑ 𝐷 , 𝑇 , . It is interesting to note that the damage value identified by the solid circle remained almost constant for any number of blocks, 𝑁 .…”

Section: Confidence Interval Of Damage: Vehicle Wheel Datamentioning

confidence: 99%

“…When considering the design of industrial vehicles from a material viewpoint, a new trend has recently emerged that exploits a lightweight design based on the use of composite materials not only for wheels [5,6] but also for other structural details of the vehicle (e.g., trucks [7,8], earthmoving machines [9], or working platforms [10,11]). This trend in design aims at improving the wheel and vehicle performance, while reducing the overall weight.…”

Section: Introductionmentioning

confidence: 99%

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Fatigue Analysis of Nonstationary Random Loadings Measured in an Industrial Vehicle Wheel: Uncertainty of Fatigue Damage

Marques

Solazzi

Benasciutti

2022

Metals

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This article presents an application of a method for estimating the inherent statistical variability of the fatigue damage computed in one single nonstationary random time history. The method applies the concept of confidence interval for the damage, which is constructed after the single time history is subdivided into pseudo-stationary segments, with each of them further divided into shorter blocks. As a case study, the method is applied to the strain time histories measured in a wheel of a telescopic handler industrial vehicle. A preliminary screening involving the short-time Fourier transform and the run test is carried out to verify whether the measured time histories are truly nonstationary and fall within the hypotheses of the proposed method. After that, the confidence interval for the unknown expected damage is computed; its upper bound can be used as a safety limit in a structural integrity assessment. The obtained results seem very promising and suggest the possible use of the proposed approach in similar engineering applications.

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Section: Confidence Interval Of Damage: Vehicle Wheel Datamentioning

confidence: 99%

Section: Confidence Interval Of Damage: Vehicle Wheel Datamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fatigue Analysis of Nonstationary Random Loadings Measured in an Industrial Vehicle Wheel: Uncertainty of Fatigue Damage

Marques

Solazzi

Benasciutti

2022

Metals

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“…Here are reported the main of these ones. Obviously, the dead load and inertia actions due to moving payload and its related structures [1,2,3,4,5], for example, the moving trolley [6,7], impulse loading [8], wind [9,10,11] and earthquake [12,13]. Earthquake actions can be very dangerous, for example during Kobe earthquake, (17/1/1995) [14,15] different cranes collapsed.…”

Section: Introductionmentioning

confidence: 99%

Mechanical behavior of ship to shore container crane subjected to different stochastic wind actions.

Solazzi,

Zrnić

2024

J. Phys.: Conf. Ser.

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This research aims to evaluate and compare the mechanical behaviour of a real crane subjected to wind actions. These are schematized in three different ways, i.e. considering wind velocity variable in time (two models) and the second one considering constant in time (as defined in the standards for designing the cranes). The fluctuation was estimated by adopting two power spectral models: Eurocode and the IEC Kaimal turbulence mode. The wind velocity and the resulting forces were determined by developing a specific Mathcad program. Through a crane solid model, it was possible to make a finite element model and then perform the numerical analyses by Ansys software. The elaboration of the numerical results shows, especially in terms of maximum displacement, that the two spectral models show very similar results, which are greater concerning the one obtained considering constant velocity; the displacement increment is approximately of three times. The research was extended also to the crane supports reaction. By adopting a variable wind action, the constraint reaction also takes on negative magnitudes, demonstrating the real possibility of crane overturning. The research is still under development especially to assess whether the results are extendable by adopting other wind turbulence models.

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Feasibility study of a very big crawler crane using composite materials

Solazzi

2024

Composites Part C: Open Access

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Stochastic wind loading applied to container crane

Cited by 4 publications

References 17 publications

Fatigue Analysis of Nonstationary Random Loadings Measured in an Industrial Vehicle Wheel: Uncertainty of Fatigue Damage

Fatigue Analysis of Nonstationary Random Loadings Measured in an Industrial Vehicle Wheel: Uncertainty of Fatigue Damage

Mechanical behavior of ship to shore container crane subjected to different stochastic wind actions.

Feasibility study of a very big crawler crane using composite materials

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