Showing papers on "Vehicle engineering published in 2020"

How Do Drivers Respond to Silent Automation Failures? Driving Simulator Study and Comparison of Computational Driver Braking Models:

Abstract: Objective:This paper aims to describe and test novel computational driver models, predicting drivers’ brake reaction times (BRTs) to different levels of lead vehicle braking, during driving with cr...

Wheel wear prediction on a high-speed train in China

Abstract: The number of operating high-speed trains in China is around 2800 today and 179,200 wheels are under maintenance in one reprofiling period. To help researchers to understand the evolution of the wh ...

Model predictive control for comfort optimization in assisted and driverless vehicles

Abstract: This paper presents a method to design a Model Predictive Control to maximize the passengers’ comfort in assisted and self-driving vehicles by achieving lateral and longitudinal dynamic. The weight...

Attainable force volumes of optimal autonomous at-the-limit vehicle manoeuvres

Abstract: With new developments in sensor technology, a new generation of vehicle dynamics controllers is developing, where the braking and steering strategies use more information, e.g. knowledge of road bo ...

Coupling effect modeling of driver vehicle environment factors influencing speed selections in curves

Abstract: It is of significant importance to select an appropriate speed for a vehicle to drive through an upcoming curve. Previous studies have mainly taken into account the vehicle–road interaction, which ...

Robustness and performance evaluations for simulation-based control and component parameter optimization for a series hydraulic hybrid vehicle

Abstract: Simulation-based optimization is a useful tool in the design of complex engineering products. Simulation models are used to capture numerous aspects of the design problem for the objective function...

Modelling stochastic excitations for a fast wear calculation methodology

Abstract: Modelling and simulation of wheel profile evolution is a time-consuming process in which the variables that affect simulation cases are usually selected and tuned through an iterative process, in o...

Curriculum Evaluation of Light Vehicle Engineering Department with Discrepancy Model as Per Industry Needs

Abstract: The implementation of the curriculum as per industrial needs should be improved in terms of qualifications of teachers, tools, practicum materials, and the use of learning models as per industry needs. This study aims to evaluate the used curriculum of light vehicle engineering department as per industry needs. This study uses discrepancy evaluation model (design, installation, process, product and comparison) that describes the implementation of curriculum according to the industry needs from various aspects, namely: design, installation, process, product and comparison. The study results concluded that achievement level of curriculum implementation as needed in the design component obtained an average score of 4.28 (83.17%) classed in a good category; installation components get an average score of 3,502 (78.47%) classified in sufficient categories; process components get an average score of 4.05 (81.75%) classed in a good category; and product components that scored an average of 4.02 (81.26%) classified in a good category. As well as in the comparison component that obtained an average score of 3,324 (74.27%) classified in sufficient categories. The implementation of vocational school curriculum majoring in light vehicle engineering as a whole is categorized as sufficient. Therefore, it needs a follow-up from the relevant parties for a better implementation.; one of which is by revising the curriculum to fit the needs of the industry.

Assessment of running gear performance in relation to rolling contact fatigue of wheels and rails based on stochastic simulations

Abstract: In this work, the authors present a methodology for assessing running gear with respect to rolling contact fatigue of wheels and rails. This assessment is based on the wheel/rail contact data of di ...

Problem Based Learning in Finite Element Analysis

Abstract: With the advancement in computing power and the evolution of different engineering software, a lot of engineering design and development uses computational modeling Finite element analysis is one of the most popular computational approaches to engineering design and assessment At the W Booth School of Engineering Practice and Technology’s Automotive and Vehicle Engineering Technology program, a course in Finite Element Analysis is taught in the 3rd year of a four-year Bachelor’s program In this work, we present the problem-based learning (PBL) approach that we use in this course to teach the principles of finite element analysis and applying them to two real-world engineering problems For these problems, the students are taught ANSYS software, which is popular in the industry In a PBL setting using a constructivist environment, we are able to engage the students and successfully deliver the concepts

Unmanned aerial vehicle engineering monitoring method

Abstract: The invention relates to an unmanned aerial vehicle engineering monitoring method. The invention relates to the technical field of unmanned aerial vehicles, the problem that when an unmanned aerial vehicle needs to monitor multiple construction sites, it is troublesome that a worker needs to carry the unmanned aerial vehicle and is fully charged before going to the site to ensure that the unmannedaerial vehicle monitors the construction sites on the site is solved. The method comprises the steps that S100, a main control terminal obtains an engineering construction site address planned to beconstructed on the same day every day; s200, the main control terminal plans a path which starts from the initial departure place of the unmanned aerial vehicle, passes through all the engineering construction site places, completes shooting of all the engineering construction sites and returns to the initial departure place of the unmanned aerial vehicle, and the engineering construction sites are provided with charging devices for charging the unmanned aerial vehicle; and S300, the main control terminal determines the departure shooting time of the unmanned aerial vehicle based on the time consumed by the unmanned aerial vehicle to complete the whole shooting process. According to the invention, the unmanned aerial vehicle can automatically monitor the construction site to be monitored every day, and the consumed time is short.

Steering wheel rotation angle measurement method and device, electronic equipment and readable storage medium

Abstract: The invention relates to the technical field of vehicle engineering and particularly relates to a steering wheel rotation angle measurement method and device, electronic equipment and a readable storage medium. The method comprises the steps of establishing a filtering equation of a vehicle in a motion state according to the relation between a steering wheel rotating angle and yaw velocity of thevehicle, solving the filtering equation according to dynamic parameters of the vehicle in the motion state, the physical parameters of a wheel axle of the vehicle and a measured value of the yaw velocity which is generated by the vehicle in the motion process and is measured by an inertial measurement unit (IMU) to determine the steering wheel rotation angle of the vehicle. By using the above method, the filtering equation of the vehicle in the motion state is established through the relation between the steering wheel rotating angle and the yaw velocity of the vehicle meeting a two-wheeled vehicle dynamic model, therefore, the filtering equation is solved to determine the steering wheel rotation angle of the vehicle, and the effects of convenient installation and the reduction of the workload of measuring the steering wheel rotation angle of the vehicle can be achieved.

Prediction of Vertical Dynamic Vehicle–Track Interaction and Sleeper–Ballast Contact Pressure in a Railway Crossing

Abstract: The vertical dynamic vehicle–track interaction in a railway crossing is simulated in the time domain based on a moving Green’s function approach in combination with an implementation of Kalker’s variational method to solve the non-Hertzian, and potentially multiple, wheel–rail contact. The method is demonstrated by calculating the wheel–rail impact load and the sleeper–ballast contact pressure for a hollow-worn wheel profile passing over a nominal crossing geometry.

Driving in virtual reality : requirements for automotive research and development

Abstract: In the last decades, there has been a substantial increase in the development of complex active safety systems for automotive vehicles. These systems need to be tested for verification and validati ...

Current CAE Trends in the Automotive Industry

Abstract: This paper provides a compact review of the current Computer Aided Engineering (CAE) trends in the automotive industry from the perspective of Volkswagen Group research. CAE has established itself as an integral part of the vehicle engineering design process. Moreover, it provides the foundation for success in a very competitive market. In order to reduce costs and time to market, the number of physical prototypes needs to be reduced. This can only be accomplished through the systematic advancement of virtual methodologies that support the brands to evolve towards a 100% simulation-based prototype-free product development environment. Several relevant areas of vehicle development are considered. Starting with the issue of safety, the topics of finite-element human body modelling for occupant and pedestrian safety evaluation as well as structural vehicle crash simulations are discussed. Other topics such as the usage of computational fluid dynamics methods in the areas of vehicle aerodynamics and aeroacoustics are also considered. Finally, new areas of methods development are briefly discussed by showing novel applications of reduced order modelling and artificial intelligence methods including Big Data analysis. These methodologies will provide the basis for greatly accelerating solver speed and ensure the extraction of more information from simulation results.

Bogie test stand

Abstract: The invention discloses a bogie test stand, which belongs to the technical field of vehicle engineering. The bogie test stand comprises a base, a gantry, a vertical loading device, a transverse actuator, a first high-frequency vibration excitation device, a second high-frequency vibration excitation device and an acquisition system, wherein the first high-frequency vibration excitation device andthe second high-frequency vibration excitation device are arranged on the base and arranged on the two sides of the gantry correspondingly; each of the first high-frequency vibration excitation deviceand the second high-frequency vibration excitation device comprises a driving motor, a first rolling wheel and a second rolling wheel which are arranged on the base; and the driving motors are connected with the first rolling wheels and the second rolling wheels. By changing the edge shapes of the first rolling wheels and the second rolling wheels, the wheel vibration frequency can be adjusted, so that a bogie can be in different high-frequency vibration working conditions, and the vibration fatigue tests can be carried out on core parts and accessories of the bogie.

Modelling Advanced Air Suspension with Electronic Level Control in ADAMS/Car

Abstract: Multi-body simulations are given more emphasis over physical tests owing toenvironmental, financial, and time requirements in the competitive automotive industry. Thus,it is imperative to develop m ...