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The safety of navigation of ro-ro passenger ships has been perplexing the shipping circles, while the problem of vehicle safe stowing and securing is an important factor that affects the safe transportation of ro-ro passenger ships. Some specifications are put forward in home and abroad on the research of safe stowing and securing of vehicle on board ro-ro passenger ships. However, it is lacking in...
Chongqing Chaotianmen Yangtze River Bridge with the main span of 552m is an urban bridge of double deck bridges for highway and rail, which need to verify fatigue security performance of the node on bottom chord . Through the calculation of the full bridge's space finite element, the node for study is determined as the M29 and calculate and calculate the internal force influence line of M29. Load...
The dynamics associated with the jettisoning of the payload fairings from the parent launch vehicle is investigated. The separation dynamics of the fairings is derived using the constraint force equation (CFE) methodology. The analysis considers a spring and a hinge type separation system employed to jettison the fairings from the accelerating on-going stage. This study presents the results of determining...
This paper presents a motion control method of 6WD/6WS (6-wheel-drive and 6-wheel-steering) vehicle using optimum tire force distribution method. When we make used of independent driving and steering system, the motion control performance of the 6WD/6WS vehicle can be improved. For example, vehicle's maneuverability is more improved at low speed and vehicle's stability is also improved at high speed...
Skid-steered vehicles are favored for military use in off-road operations because of their high maneuverability and mobility on extreme terrains and obstacles. There is a trend towards transforming steered tracked vehicles to skid-steered wheel vehicles for high speed at the expense of reduced mobility. Skid-steered vehicles turn by generating different longitudinal forces at the tires due to the...
Precise control of Automatic Guided Vehicles (AGVs) navigating between the aisles of manufacturing systems by the use of local markers is an important task. On the basis of the geometric model of the workspace and the vehicles and that of the sensor uncertainties precise trajectories were recently generated along which the vehicle safely can move. In order to achieve precise trajectory tracking the...
Modeling of the deformational force and absorbed energy plays a very important role in different fields of vehicle engineering. The usually applied FEM based methods give good approximations, but they have extremely large computational complexity. On the other hand there exist simple force models, but they not approximate well in details the real data. The aim of this paper is to introduce a force...
We present load characteristics of three-phase 12/8 switched reluctance motor (SRM) for the electric vehicle (EV), driving noise, and accelerating performance of the vehicle. Driving force characteristics of EV using SRM are calculated from the torque vs. speed characteristic. The driving force reaching the wheels is used to overcome the traveling resistance, and works as the propulsion power. Driving...
Normal force in single-sided linear induction motor (SLIM) is normally restrained in SLIM transportation system. We developed a combined levitation-and-propulsion device to utilize the normal force for levitation and thrust for propulsion with only a SLIM in our Lab. This paper describes a mathematic model for the analysis of normal -and- thrust forces through a space high harmonic method. A scheme...
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