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Dynamical modelling of boom tower crane rigging systems: model selection for construction

Johns Brandon, Abdi Elahe, Arashpour Mehrdad

Archives of Civil and Mechanical Engineering

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2023

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Vol. 23, no. 3

art. no. e162, 2023

EN

Accurate dynamical models are imperative to the development of accurate monitoring and control systems, which are foundational to safety in construction and infrastructure projects. However, the highly coupled non-linear dynamics of crane systems requires the application of many simplifying assumptions to the dynamical crane model. To achieve accurate control, simplifications should yield minimal error in modelled behaviour for maximal reduction in model complexity. However, limited information is available on the situational suitability of different combinations of simplifications to construction tower crane models. This paper informs designers of the optimal dynamical models to represent boom tower cranes, with respect to the crane characteristics and selection criteria. The optimal models are determined though the comparison of ten 2D and 3D dynamical models in representation of three variations of boom tower crane that are commonly deployed on construction sites. The comparison includes analysis of over 100 simulations and experimentation. The value of the presented optimal model selection framework is in facilitating systems designers to develop accurate crane monitoring and control systems.

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Modelowa ocena wpływu układu wibroizolacji kabiny operatora na drgania własne wysięgnika głównego koparki kołowej

Lewandowski T., Słomski W.

Systems : journal of transdisciplinary systems science

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2004

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Vol. 9, No. sp. II

616-621

PL

W referacie przedstawiono uproszczony model typu MBS (Mutti Body System) układu zwodzenia wysięgnika głównego koparki kołowej wraz z układem zwodzenia kabiny operatora. Na drodze obliczeń modelowych sprawdzono wpływ zastosowania dodatkowych elementów sprężystych w układzie wibroizolacji kabiny na własności dynamiczne wysięgnika głównego.

EN

The study presents a simplified mode! (type Multi Body System) of line (rope) system of main boom of wheel excavator together with line (rope) system of operator's cabin. The effect of the use of the additional elastic elements in vibration isolation system of operator's cabin on main boom dynamie properties was verified in the numerical way.

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Analiza dynamiki belki wysięgnika żurawia podczas rozładunku sypkiego nosiwa

Lubnauer W. A.

Systems : journal of transdisciplinary systems science

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2003

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Vol. 8, No. sp.

357-364

PL

W pracy przedstawiono analizę dynamiki belki wysięgnika żurawia wyposażonego w naczynie czerpakowe, którego zawartość (masa nosiwa) jest rozładowywana. Jako maszynę przyjęto model żurawia samojezdnego. Analizy dokonano poprzez modelowanie i symulację komputerową z wykorzystaniem programu „Mathematical"

EN

In the paper the dynamic analysis of the boom crane with a time-varying mass of the load is presented. This character of the loading accounts for the vibration excitation of the boom. The presented analyses of the equations of motion of the boom are solved using numerical integration. The "Mathematical system is used to find numerical solutions and to present the results. The method of generalized coordinates applied above is especially useful for comparing the displacements of a boom during vibration and the statical displacements produced in the system by a time-varying mass. Examples of the simulation tests for the diverse functions of the variable mass are shown as well.