The Experts below are selected from a list of 1566 Experts worldwide ranked by ideXlab platform

Christian Radisch - One of the best experts on this subject based on the ideXlab platform.

  • Handling of Partially Filled Tank Containers by Means of Cranes
    Volume 1B: Offshore Technology, 2014
    Co-Authors: Andreas Hansen, Edwin Kreuzer, Christian Radisch
    Abstract:

    Tank Containers are widely used to transport a variety of liquid goods such as food products, oil, and different kinds of fuel including liquefied natural gas. Due to the unpredictable dynamic behavior of partially filled Tank Containers, regulations limit the Containers to be either almost full (> 80%) or almost empty (< 20%), when handled by cranes. In order to provide arguments to ease these restrictions, the system is analyzed and control methods for assisting the crane operator are proposed. We deduce a very accurate and computationally favorable mathematical description of the coupled crane and fluid dynamics. The fluid is modeled by a potential flow approach resulting in a low dimensional approximation of the liquid dynamics. Coupling the fluid dynamic model with the load system model of a container crane leads to a nonlinear formulation of the overall system. The state estimation algorithm exclusively relies on the measured rope forces as well as the known motion parameters of the trolley and the rope winches. A nonlinear state feedback controller based on sliding modes for underactuated systems provides a stabilizing control signal for the system. Experimental results for validation of the model, the observer, and the control design are included.Copyright © 2014 by ASME

Oleksij Fomin - One of the best experts on this subject based on the ideXlab platform.

  • Dynamic load modelling for Tank Containers with the frame of circle pipes and structurally improved fittings
    E3S Web of Conferences, 2020
    Co-Authors: Oleksij Fomin, Glib Vatulia, Alyona Lovska
    Abstract:

    Higher efficiency of bulked cargo transportation along international transport corridors can be achieved with a resource-saving Tank container described in the study. A characteristic feature of a Tank container is the use of circle pipes as the carrying elements of the frame. In order to decrease impact loads between fittings of the Tank container and fitting stops of the flat wagon at shunting impacts, the authors suggest filling fittings with viscous or viscoelastic materials of dumping or anticorrosive properties. The study also deals with modelling dynamic loading for the suggested Tank container. The accelerations obtained were considered in strength calculations for a Tank container as components of the dynamic loading. It was determined that the maximum equivalent loads did not exceed the admissible loads. The research will promote designing new-generation Tank Containers of improved technical, economical and ecological properties, and improve the working efficiency of combined transportation.

  • Dynamic load effect on the transportation safety of Tank Containers as part of combined trains on railway ferries
    Vibroengineering PROCEDIA, 2019
    Co-Authors: Oleksij Fomin, Alyona Lovska, Václav Píštěk, Pavel Kučera
    Abstract:

    Maintaining the leading position of railway transport in the international transportation market led to the creation of its combined interaction with other modes of transport. In countries that have access to international traffic through the sea, rail-ferry services have been developed. At the initial stage of functioning of this symbiosis, only freight and passenger cars were transported by sea. At the moment, it has become possible to follow container trains on railway ferries by sea. An example would be the international Silk Road corridor, which connects Ukraine with China. Important components of this corridor are two rail-ferry routes through the waters of the Black and Caspian Seas.

  • Determination of dynamic load features of Tank Containers when transported by rail ferry
    Eastern-European Journal of Enterprise Technologies, 2019
    Co-Authors: Oleksij Fomin, Alyona Lovska, Olexandr Melnychenko, Ivan Shpylovyi, Vyacheslav Masliyev, Olga Bambura, Maryna Klymenko
    Abstract:

    Simulation of the dynamic load of the Tank container when transported as part of a combined train on a rail ferry is carried out. Mathematical models taking into account possible interactions of Tank Containers with the frame of flat cars are developed. Calculations are made for the Tank container of 1CS type size placed on the 13-4012M flat car. It is taken into account that the transportation of the Tank container is carried out on the “Geroi Shipki” type rail ferry by the Black Sea. It is found that the greatest acceleration acts on the Tank container in case of displacement of the flat car relative to the deck and the Tank container relative to the frame. The total value of acceleration is about 0.9g. The stability of the Tank container when transported by rail ferry is investigated. Permissible roll angles of the rail ferry that ensure the stability of the Tank container relative to the flat car frame are calculated. Computer simulation of the dynamic load of the Tank container when transported by rail ferry is carried out. The calculation is made in the CosmosWorks software environment. The fields and numerical values of the accelerations acting on the Tank container are determined. The developed models are verified by the F-criterion. The research will help to provide safety and to make recommendations on sea transportation of combined trains by rail ferries, as well as to design Tank Containers with improved technical-economic, strength and environmental characteristics.

  • ANALYSIS OF DYNAMIC LOADING OF IMPROVED CONSTRUCTION OF A Tank CONTAINER UNDER OPERATIONAL LOAD MODES
    EUREKA: Physics and Engineering, 2019
    Co-Authors: Oleksij Fomin, Alyona Lovska, Oleksandr Gorobchenko, Serhii Turpak, Iryna Kyrychenko, Oleksii Burlutski
    Abstract:

    An increase in the volume of bulk cargo transportation through international transport corridors necessitates the commissioning of Tank Containers. Intermodalization of a Tank container predetermines its load in various operating conditions depending on the type of vehicle on which it is carried: aviation, sea, air or rail. The analysis of the operating conditions of Tank Containers, as well as the regulatory documents governing their workload, led to the conclusion that the most dynamic loads acting on the supporting structures during transportation by rail. Namely, during the maneuvering collision of a wagon-platform, on which there are Tank Containers. In this case, it is stipulated that for a loaded Tank container, the dynamic load is assumed to be 4g, and for an empty (for the purpose of checking the reinforcement) – 5g. It is important to note that when the Tank container is underfilled with bulk cargo and taking into account movements of fittings relative to fittings, the maximum value of dynamic load can reach significantly larger values. Therefore, in order to ensure the strength of Tank Containers, an improvement of their structures has been proposed by introducing elastic-viscous bonds into the fittings. To determine the dynamic loading of the Tank container, taking into account the improvement measures, mathematical models have been compiled, taking into account the presence of elastic, viscous and elastic-viscous bonds between the fittings, stops and fittings. It is established that the elastic bond does not fully compensate for the dynamic loads acting on the Tank container. The results of mathematical modeling of dynamic loading, taking into account the presence of viscous and elastic-viscous coupling in the fittings, made it possible to conclude that the maximum accelerations per Tank container do not exceed the normalized values. The determination of the dynamic loading of the Tank container is also carried out by computer simulation using the finite element method. The calculation takes place in the software package CosmosWorks. The maximum values of accelerations are obtained, as well as their distribution fields relative to the supporting structure of the Tank container. The developed models are verified by the Fisher criterion. The research will contribute to the creation of Tank Containers with improved technical, operational, as well as environmental characteristics and an increase in the efficiency of the liquid cargo transportation process through international transport corridors.

Alyona Lovska - One of the best experts on this subject based on the ideXlab platform.

  • Dynamic load modelling for Tank Containers with the frame of circle pipes and structurally improved fittings
    E3S Web of Conferences, 2020
    Co-Authors: Oleksij Fomin, Glib Vatulia, Alyona Lovska
    Abstract:

    Higher efficiency of bulked cargo transportation along international transport corridors can be achieved with a resource-saving Tank container described in the study. A characteristic feature of a Tank container is the use of circle pipes as the carrying elements of the frame. In order to decrease impact loads between fittings of the Tank container and fitting stops of the flat wagon at shunting impacts, the authors suggest filling fittings with viscous or viscoelastic materials of dumping or anticorrosive properties. The study also deals with modelling dynamic loading for the suggested Tank container. The accelerations obtained were considered in strength calculations for a Tank container as components of the dynamic loading. It was determined that the maximum equivalent loads did not exceed the admissible loads. The research will promote designing new-generation Tank Containers of improved technical, economical and ecological properties, and improve the working efficiency of combined transportation.

  • Dynamic load effect on the transportation safety of Tank Containers as part of combined trains on railway ferries
    Vibroengineering PROCEDIA, 2019
    Co-Authors: Oleksij Fomin, Alyona Lovska, Václav Píštěk, Pavel Kučera
    Abstract:

    Maintaining the leading position of railway transport in the international transportation market led to the creation of its combined interaction with other modes of transport. In countries that have access to international traffic through the sea, rail-ferry services have been developed. At the initial stage of functioning of this symbiosis, only freight and passenger cars were transported by sea. At the moment, it has become possible to follow container trains on railway ferries by sea. An example would be the international Silk Road corridor, which connects Ukraine with China. Important components of this corridor are two rail-ferry routes through the waters of the Black and Caspian Seas.

  • Determination of dynamic load features of Tank Containers when transported by rail ferry
    Eastern-European Journal of Enterprise Technologies, 2019
    Co-Authors: Oleksij Fomin, Alyona Lovska, Olexandr Melnychenko, Ivan Shpylovyi, Vyacheslav Masliyev, Olga Bambura, Maryna Klymenko
    Abstract:

    Simulation of the dynamic load of the Tank container when transported as part of a combined train on a rail ferry is carried out. Mathematical models taking into account possible interactions of Tank Containers with the frame of flat cars are developed. Calculations are made for the Tank container of 1CS type size placed on the 13-4012M flat car. It is taken into account that the transportation of the Tank container is carried out on the “Geroi Shipki” type rail ferry by the Black Sea. It is found that the greatest acceleration acts on the Tank container in case of displacement of the flat car relative to the deck and the Tank container relative to the frame. The total value of acceleration is about 0.9g. The stability of the Tank container when transported by rail ferry is investigated. Permissible roll angles of the rail ferry that ensure the stability of the Tank container relative to the flat car frame are calculated. Computer simulation of the dynamic load of the Tank container when transported by rail ferry is carried out. The calculation is made in the CosmosWorks software environment. The fields and numerical values of the accelerations acting on the Tank container are determined. The developed models are verified by the F-criterion. The research will help to provide safety and to make recommendations on sea transportation of combined trains by rail ferries, as well as to design Tank Containers with improved technical-economic, strength and environmental characteristics.

  • ANALYSIS OF DYNAMIC LOADING OF IMPROVED CONSTRUCTION OF A Tank CONTAINER UNDER OPERATIONAL LOAD MODES
    EUREKA: Physics and Engineering, 2019
    Co-Authors: Oleksij Fomin, Alyona Lovska, Oleksandr Gorobchenko, Serhii Turpak, Iryna Kyrychenko, Oleksii Burlutski
    Abstract:

    An increase in the volume of bulk cargo transportation through international transport corridors necessitates the commissioning of Tank Containers. Intermodalization of a Tank container predetermines its load in various operating conditions depending on the type of vehicle on which it is carried: aviation, sea, air or rail. The analysis of the operating conditions of Tank Containers, as well as the regulatory documents governing their workload, led to the conclusion that the most dynamic loads acting on the supporting structures during transportation by rail. Namely, during the maneuvering collision of a wagon-platform, on which there are Tank Containers. In this case, it is stipulated that for a loaded Tank container, the dynamic load is assumed to be 4g, and for an empty (for the purpose of checking the reinforcement) – 5g. It is important to note that when the Tank container is underfilled with bulk cargo and taking into account movements of fittings relative to fittings, the maximum value of dynamic load can reach significantly larger values. Therefore, in order to ensure the strength of Tank Containers, an improvement of their structures has been proposed by introducing elastic-viscous bonds into the fittings. To determine the dynamic loading of the Tank container, taking into account the improvement measures, mathematical models have been compiled, taking into account the presence of elastic, viscous and elastic-viscous bonds between the fittings, stops and fittings. It is established that the elastic bond does not fully compensate for the dynamic loads acting on the Tank container. The results of mathematical modeling of dynamic loading, taking into account the presence of viscous and elastic-viscous coupling in the fittings, made it possible to conclude that the maximum accelerations per Tank container do not exceed the normalized values. The determination of the dynamic loading of the Tank container is also carried out by computer simulation using the finite element method. The calculation takes place in the software package CosmosWorks. The maximum values of accelerations are obtained, as well as their distribution fields relative to the supporting structure of the Tank container. The developed models are verified by the Fisher criterion. The research will contribute to the creation of Tank Containers with improved technical, operational, as well as environmental characteristics and an increase in the efficiency of the liquid cargo transportation process through international transport corridors.

Richard Thomas - One of the best experts on this subject based on the ideXlab platform.

Andreas Hansen - One of the best experts on this subject based on the ideXlab platform.

  • Handling of Partially Filled Tank Containers by Means of Cranes
    Volume 1B: Offshore Technology, 2014
    Co-Authors: Andreas Hansen, Edwin Kreuzer, Christian Radisch
    Abstract:

    Tank Containers are widely used to transport a variety of liquid goods such as food products, oil, and different kinds of fuel including liquefied natural gas. Due to the unpredictable dynamic behavior of partially filled Tank Containers, regulations limit the Containers to be either almost full (> 80%) or almost empty (< 20%), when handled by cranes. In order to provide arguments to ease these restrictions, the system is analyzed and control methods for assisting the crane operator are proposed. We deduce a very accurate and computationally favorable mathematical description of the coupled crane and fluid dynamics. The fluid is modeled by a potential flow approach resulting in a low dimensional approximation of the liquid dynamics. Coupling the fluid dynamic model with the load system model of a container crane leads to a nonlinear formulation of the overall system. The state estimation algorithm exclusively relies on the measured rope forces as well as the known motion parameters of the trolley and the rope winches. A nonlinear state feedback controller based on sliding modes for underactuated systems provides a stabilizing control signal for the system. Experimental results for validation of the model, the observer, and the control design are included.Copyright © 2014 by ASME