Vibration of railway bridges under a moving train by using bridge-track-vehicle element

Cheng, Yao; Au, Ftk; Cheung, Y.K.

doi:10.1016/s0141-0296(01)00058-x

Cited by 139 publications

(78 citation statements)

References 14 publications

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“…MSDMs are widely used to simulate the mechanical behavior of deformable objects in structural dynamics. 29,30 Figure 1 shows a MSD system. The proposed method consists of four procedures: (a) volumetric mesh generation, (b) volumetric mesh deformation, (c) volumetric image reconstruction, and (d) volumetric image visualization.…”

Section: Overviewmentioning

confidence: 99%

Pneumoperitoneum simulation based on mass-spring-damper models for laparoscopic surgical planning

Nimura

Hayashi

et al. 2015

J. Med. Imag

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Abstract. Laparoscopic surgery, which is one minimally invasive surgical technique that is now widely performed, is done by making a working space (pneumoperitoneum) by infusing carbon dioxide (CO 2 ) gas into the abdominal cavity. A virtual pneumoperitoneum method that simulates the abdominal wall and viscera motion by the pneumoperitoneum based on mass-spring-damper models (MSDMs) with mechanical properties is proposed. Our proposed method simulates the pneumoperitoneum based on MSDMs and Newton's equations of motion. The parameters of MSDMs are determined by the anatomical knowledge of the mechanical properties of human tissues. Virtual CO 2 gas pressure is applied to the boundary surface of the abdominal cavity. The abdominal shapes after creation of the pneumoperitoneum are computed by solving the equations of motion. The mean position errors of our proposed method using 10 mmHg virtual gas pressure were 26.9 AE 5.9 mm, and the position error of the previous method proposed by Kitasaka et al. was 35.6 mm. The differences in the errors were statistically significant (p < 0.001, Student's t -test). The position error of the proposed method was reduced from 26.9 AE 5.9 to 23.4 AE 4.5 mm using 30 mmHg virtual gas pressure. The proposed method simulated abdominal wall motion by infused gas pressure and generated deformed volumetric images from a preoperative volumetric image. Our method predicted abdominal wall deformation by just giving the CO 2 gas pressure and the tissue properties. Measurement of the visceral displacement will be required to validate the visceral motion.

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Section: Overviewmentioning

confidence: 99%

Pneumoperitoneum simulation based on mass-spring-damper models for laparoscopic surgical planning

Nimura

Hayashi

et al. 2015

J. Med. Imag

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“…For example, Zhai and Sun (1994) developed a new and detailed model to investigate the vertical interaction between a vehicle and the track in which the vehicle was modeled as a multi-body system with 10 degrees of freedom (DOFs), the track as an infinite Euler beam, and the wheel-rail interaction as a Hertzian nonlinear contact spring. In addition, Yang et al (1999) derived a vehicle-bridge interaction element by considering a vehicle as a rigid beam supported by two suspension units and a bridge as beam elements, and Cheng et al (2001) proposed a bridge-track-vehicle element in which the vehicles were modeled as mass-spring-damper systems, the rails as an upper beam element, and the bridge deck as a lower beam element. Furthermore, Lei and Noda (2002) developed a dynamic computational model for a vehicle and track coupling system using the finite element method (FEM), in which the vehicletrack coupling dynamic responses were analyzed in time and frequency domains due to the random irregularity of the track vertical profile.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Rail-Bridge Coupling Element of Unequal Lengths for Analyzing Train-Track-Bridge Interaction System

Zeng

Liu

et al. 2016

Lat. Am. j. solids struct.

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A three-dimensional rail-bridge coupling element of unequal lengths in which the length of the rail element is shorter than that of the bridge element is presented in this paper to investigate the spatial dynamic responses of a train-track-bridge interaction system. Formulation of stiffness and damping matrices for the fastener, ballast, and bearing, as well as the three-dimensional equations of motion in matrix form for a train-track-bridge interaction system using the proposed element are derived in detail using the energy principle. The accuracy of the proposed three-dimensional rail-bridge coupling element is verified using the existing twodimensional element. Three examples of a seven-span continuous beam bridge are shown: the first investigates the influence of the efficiency and accuracy of the lengths of the rail and bridge elements on the spatial dynamic responses of the train-track-bridge interaction system, and the other two illustrate the influence of two types of track models and two types of wheel-rail interaction models on the dynamic responses of the system. Results show that (1) the proposed rail-bridge coupling element is not only able to help conserve calculation time, but it also gives satisfactory results when investigating the spatial dynamic responses of a train-trackbridge interaction system; (2) the double-layer track model is more accurate in comparison with the single-layer track model, particularly in relation to vibrations of bridge and rail; and (3) the no-jump wheel-rail interaction model is generally reliable and efficient in predicting the dynamic responses of a train-trackbridge interaction system.

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“…The purpose of the study is to evaluate the impact of railway induced vibrations, whose source might be Pendolino, the high speed train [3] the structural system of the buildings.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Pendolino high-speed rail on the structure of buildings located in the proximity of railway tracks

Grębowski¹,

Ulman²

2016

International Journal of Applied Mechanics and Engineering

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The following research focuses on the dynamic analysis of impact of the high-speed train induced vibrations on the structures located near railway tracks. The office complex chosen as the subject of calculations is located in the northern part of Poland, in Gdańsk, in the proximity of Pendolino, the high speed train route. The high speed trains are the response for the growing needs for a more efficient railway system. However, with a higher speed of the train, the railway induced vibrations might cause more harmful resonance in the structures of the nearby buildings. The damage severity depends on many factors such as the duration of said resonance and the presence of additional loads. The studies and analyses helped to determinate the method of evaluating the impact of railway induced vibrations on any building structure. The dynamic analysis presented in the research is an example of a method which allows an effective calculation of the impact of vibrations via SOFISTIK program.

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Vibration of railway bridges under a moving train by using bridge-track-vehicle element

Cited by 139 publications

References 14 publications

Pneumoperitoneum simulation based on mass-spring-damper models for laparoscopic surgical planning

Pneumoperitoneum simulation based on mass-spring-damper models for laparoscopic surgical planning

Three-Dimensional Rail-Bridge Coupling Element of Unequal Lengths for Analyzing Train-Track-Bridge Interaction System

The Effect of Pendolino high-speed rail on the structure of buildings located in the proximity of railway tracks

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