TY - CONF A1 - Otremba, Frank A1 - Romero-Navarrete, José A. A1 - Lozano Guzmán, A. A. T1 - Cargo securement standards and braking maneuvers T2 - The 20th international research conference proceedings N2 - There was a need to validate the longitudinal performance required for the cargo securement, as current standards exhibit differences. A model has been proposed in this paper, to simulate the effect of a shifting cargo on the braking efficiency of the vehicle. Results suggest that the braking efficiency can be greater in the case of a shifting cargo, as a result of the uncoupling of the cargo-vehicle systems, implying that similar braking forces are exerted on a reduced mass. The shifting of the cargo can occur as a result of the vibration of the vehicle, that leads to having a diminished friction force to prevent the shifting of the cargo. T2 - International Research Conference CY - Paris, France DA - 29.10.2018 KW - Cargo KW - Securement KW - Maneuvers PY - 2018 SP - 2105 EP - 2108 AN - OPUS4-46423 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CHAP A1 - Romero-Navarrete, José A. A1 - Otremba, Frank A1 - Obregón Biosca, S. A. ED - Romero-Navarrete, José A. T1 - Effective assessment and management of railway infrastructure for competitiveness and sustainability T2 - Transportation Infrastructure: Assessment, Management and Challenges N2 - In this chapter the challenges facing railways have been illustrated through the description of two important events occurring in different geographical areas. While the explosion in Quebec, Canada, points out the importance of taking away the transportation infrastructure from highly populated areas; the disruption of the European railway network in Rastatt, Germany, describes the importance of designing alternative routes to critical railway segments, together with the need to have contingency plans to face extraordinary situations regarding the connectivity in a given transport network. Future research efforts are recognized in relation with the railway car – track interaction, as the dynamic loads derived from such interaction could be reducing the life of such infrastructure. It is particularly important for infrastructures dedicated to the transportation of liquid hazardous substances. KW - Railway KW - Infrastructure PY - 2018 SN - 978-1-53614-059-0 SP - Chapter 5, 1 EP - 23 PB - Nova Science Publishers, 2018 AN - OPUS4-45150 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Romero-Navarrete, José A. A1 - Otremba, Frank A1 - Betanzo Quezada, E. A1 - Obregón Biosca, S. A. T1 - The railway transport sustainability in Mexico. Europe and Mexico perspective N2 - The use of railway transportation for satisfying the transport needs of goods in Mexico is less intense than in developed countries, such as Germany. Mexican performance measures based upon the railway length per capita (intensity), or the railway length per square km of the country surface (density), are well behind from corresponding indicators for Germany, in such a way that the length of the railway infrastructure of Mexico should be, at least, doubled in order to reach a comparable intensity rate as that of Germany. In this paper, the benefits from transferring the whole transportation of goods from road to railway, is discussed. The benefits include a remarkable reduction in energy consumption and CO2 emissions. The feasibility for the electrical infrastructure to provide the necessary energy is further shown, while the economic feasibility of such situation is analyzed on the basis of the federal budget of Mexico. According to these estimations, the investment in railway infrastructure is feasible, while the electrical installed capacity is enough to satisfy an all-electric system. T2 - XIV Congreso Internacional de Ingenieria (XIV International Engineering Congress) CY - Querétaro, Mexico DA - 14.05.2018 KW - Railways KW - Trucking KW - Transport externalities KW - Comparative assessment KW - Energy saving potentials PY - 2018 SN - 978-1-5386-7018-7 SP - 1 EP - 4 PB - IEEE AN - OPUS4-45823 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Otremba, Frank A1 - Romero-Navarrete, José A. A1 - Jáuregui Correa, J.C.A. T1 - Forces on rails in turns: A review T2 - CONiiN XVI International Engineering Congress N2 - Regardless of the mode of transportation, directional changes generate greater forces on the infrastructure as a result of the lateral load transfer and of the respective steering forces in the vehicles. In the case of Railway transportation, a concentrated damage occurs in the rail at the initiation of the turning maneuver, whose magnitude depends on the bogie´s yaw stiffness and on the level of friction at its centre plate. To mitigate such rail-damaging effects, some new designs have been proposed and used for the bogies´ wheelset. However, no new designs for the centre plate have been used. In this paper, a review of the causality for the forces arising during Railway Vehicle's turn negotiations, is presented, including the description of a modeling framework to analyze the influential Parameters for determining the magnitude of such forces. T2 - CONIIN 2020 CY - Online meeting DA - 28.09.2020 KW - Turning maneuvers KW - Rail damage KW - Yaw stiffness KW - Yaw resistance KW - Self-aligning bogies KW - Lateral load transfer KW - Steering forces PY - 2020 SP - 1 EP - 6 AN - OPUS4-51390 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Romero-Navarrete, José A. A1 - Otremba, Frank ED - Zobory, I. T1 - Conceptual design of an active centre plate T2 - Proceedings of the 11th international conference on railway bogies and running gears N2 - The efficiency and safety of railway transportation depend both on numerous factors linked to the vehicle, the infrastructure, the operator and the environment. Curved tracks are subjected to demanding situations due to elevated stress levels, as a function of the operating conditions and vehicle/infrastructure design. In such segments, steering forces are superimposed to lateral load transfers. The steering forces depend on the condition and the design of the centre plate and bogies’ suspensions design. While the friction at the centre plate provides the needed damping to mitigate the hunting vibration of the bogie in straight track segments, such yaw resistance originates high steering forces and rail damage on curved tracks. A centre plate with low friction at turns and high friction at straight track segments would thus be highly advantageous. In this paper, a centre plate design is proposed which provides a yaw-rotation resistance torque that depends on the bogie-car relative position. Two different designs are considered for that purpose, one that combines a spring-acted centring mechanism with a lower pair kinematics, while the other one involves higher kinematic pairs which should incorporate lateral damping elements. As a result of using an engineering design approach, the higher kinematic pairs-based design is recommended however, the validation of such operational principles, including the introduction of the needed damping, should be configured on the basis of experimental models. T2 - 11th International Conference on Railway Bogies and Running Gears CY - Budapest, Hungary DA - 09.09.2019 KW - Steering torques KW - Railway transportation KW - Bogie design KW - Conceptual design KW - Engineering design KW - Transport externalities PY - 2020 SN - 978-963-9058-42-2 SP - 77 EP - 86 PB - Scientific Society of Mechanical Engineers (SSME/GTE) CY - Budapest AN - OPUS4-54086 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Jauregui-Correa, J. C. A1 - Otremba, Frank A1 - Romero-Navarrete, José A. A1 - Hurtado-Hurtado, G. T1 - Determination of the effect of sloshing on the railcar-track dynamic behavior N2 - Liquid cargo has a significant impact on the interface wheel-track interaction. The sloshing affects the track-railcar's dynamic behavior. The effect is detectable at the track level and at the vehicle. Its characterization requires the combination of different techniques: Empirical Mode Decomposition (EMD) Time-Frequency Maps Sloshing occurred when significant perturbations happened in the railcar: The railcar entered a curve Reduction in its travel speed A railcar with a tank is a clear example of a multibody dynamic system with a nonlinear behavior. T2 - 7th International Symposium on Multibody Systems and Mechatronics - MuSMe 2021 CY - Córdoba, Argentina DA - 12.10.2021 KW - Liquid cargo KW - Wheel-track interaction KW - Sloshing affects KW - Vehicle PY - 2021 AN - OPUS4-53572 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CHAP A1 - Jauregui-Correa, J. C. A1 - Otremba, Frank A1 - Romero-Navarrete, José A. A1 - Hurtado-Hurtado, G. ED - Pucheta, M. ED - Cardona, A. ED - Preidikman, S. ED - Hecker, R. T1 - Determination of the Effect of Sloshing on the Railcar-Track Dynamic Behavior T2 - Multibody Mechatronic Systems N2 - This paper presents the study of the impact caused by a liquid Cargo on a railway infrastructure. The dynamic behavior of a tank car corresponds to a multibody dynamic system with several degrees of freedom. This study’s data were obtained from a scale experimental fixture consisting of a track and a railcar with a tank. The track was instrumented with strain gauges and the railcar with accelerometers. The data showed non-periodic and periodic terms; therefore, the results were analyzed with the Empirical Mode Decomposition method (EMD). It was found that the EMD identified the signal components that were related to the sloshing. These components represent the mode shapes of the original signal. The location of the sloshing in the track was found applying spectrograms to the accelerometer data. This paper’s experimental outputs suggest that the sloshing effect is detectable at the track and in the vehicle dynamics. KW - Sloshing effect KW - Empirical Mode Decomposition KW - Wheel/track interaction KW - Multibody dynamics PY - 2021 SN - 978-3-030-88750-6 DO - https://doi.org/10.1007/978-3-030-88751-3_14 SP - 131 EP - 140 PB - Springer Nature Switzerland AG AN - OPUS4-53561 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Romero-Navarrete, José A. A1 - Otremba, Frank T1 - A testing rig to study vehicle-track interaction N2 - Preliminary data of accidents, pointing out about rail fracture potentials of sloshing cargoes. Testing rig, designed to characterize the effect of vehicle characteristics and infrastructure design, on the forces exerted on the rail. The corresponding mathematical model will be. T2 - Joint Rail Conference CY - Pittsburgh, PA, USA DA - 18.04.2018 KW - Vehicle-track KW - Interaction PY - 2018 AN - OPUS4-44815 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Romero-Navarrete, José A. A1 - Otremba, Frank A1 - Betanzo, E. A1 - Obregòn, S. A. T1 - The railway transport sustainability in Mexico N2 - A preliminary analysis has been presented on the advantages for Mexico to migrate the cargo from trucking to railways. While the approach is highly unrealistic, it describes interesting figures that should animate the interest of Mexico to develop its railway infrastructure. Adverse situations due to the topographic characteristics of the mostly populated area of Mexico. The data presented in this paper suggest that the building of railway infrastructure is economically feasible. T2 - CONIIN CY - Queretaro, Mexico DA - 14.05.2018 KW - Railway KW - Transport KW - Mexico PY - 2018 AN - OPUS4-44948 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - CONF A1 - Otremba, Frank A1 - Romero-Navarrete, José A. T1 - A testing rig to study vehicle-track interaction during turning T2 - Proceedings of the 2018 IEEE/ASME Joint Rail Conference N2 - A testing rig for the measurement of the dynamic loads on the rails due to cargo sloshing,has been proposedin this paper. The system represents a scale-down approach that simulates astraightening maneuver of the railway car after negotiating a turn. As part of the experimental effort, a mathematical model was developed that, oncevalidated, will provide more insights about the potential effect of many other cardesign factors, on the level of stress developed in the raildue to the sloshing cargo.A fundamental output from the testing, will be the objective comparison between the railloads due toa sloshing and a non-sloshing cargo, together with a validated model that wouldallow parametric studies in relation withthe potential effect,of several track and carproperties,on the magnitude of the sloshing forces on the rail. T2 - IEEE/ASME Joint Rail Conference CY - Pittsburgh, PA, USA DA - 18.04.2018 KW - Testing KW - Rig KW - Vehicle-Track KW - Interaction PY - 2018 SP - 1 EP - 6 PB - ASME AN - OPUS4-44816 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -