Papers by Keyword: Vehicle

Abstract: Traffic congestion has been a major problem in big cities, including Yogyakarta, with negative impacts including time, economic, and psychological losses. Based on data from the Yogyakarta Special Region Transportation Agency and Yogyakarta City Transportation Agency, analysis of congestion level data, and field observations, it was found that one of the main causes of congestion on the most congested roads in Yogyakarta City is vehicles parked on the side of the road. The proposed solution involves roadside parking detection and warning using surveillance cameras integrated with Artificial Intelligence (AI). The proposed system involves vehicle detection with pre-trained deep learning models, parking detection algorithms with Intersection over Union (IoU) tracking, and alerts that are forwarded to motorists as well as authorities such as the Transportation Department and local traffic police. The Yogyakarta CCTV dataset is used to test parking detection using various models, such as YOLOv5-medium, YOLOv5-large, YOLOv7-tiny, and Haar Cascade. The model evaluation shows that YOLOv5-large provides the highest accuracy of 86.1% with a processing speed of 5.5 Frames Per Second (FPS) to perform parking detection. With this proposed system, this research can contribute to solving congestion problems and improving traffic conditions in Yogyakarta City.

Abstract: Lightweight, robust, and anti-rust properties of aluminium foam might be a solution for reducing the effect of traffic accidents and for minimum fuel consumption. This research investigated the crashworthiness of vehicle crash-box filled with aluminum foam by varying its cross-sectional structure and its loading angle such as 0°, 10°, 20°, 30°. The variations consisted of structures for example single wall foam filled and double wall foam filled. The material used to construct the wall was Aluminum Alloy 2024 and Aluminium foam. The finite element model using Abaqus CAE Software was operated for both designing the crash-box and analyzing its crashworthiness. Some parameters were determined To obtain the best crash-box design, the finite element analysis was carried on total energy absorption, specific energy absorption, maximum load, average load, and crush-force efficiency. Double wall foam filled crash-box was shown to have better energy absorption ability and this structure of crush box is considered fpr vehicle structure in future.

Abstract: Over the last several years, vehicular ad-hoc networks (VANETs) technology booming as significant research topic. Vehicular Ad-hoc Networks (VANETs) are a component of Intelligent Transportation Systems (ITS) that are in charge of communication between moving vehicles in a specific environment. VANETs are increasingly recognised as dependable networks that vehicles engage for communication between moving or stationary vehicles (V2V), Road side unit (RSU).The idea of enabling vehicle communication over a cellular connection prompted the creation of the new protocols, equipment, also different application scenarios. Various simulators were created at the time due to the inherent difficulties of evaluating these research contributions on a real-world test platform. The introduction of autonomous cars and the proliferation of new technology have created new research challenges in VANETs (e.g., 5G and edge computing). As a result, VANET simulators must be assessed to determine whether they are still capable of analysing these novel ideas. This study delivers a comprehensive assessment of Vehicular simulators such as Veins, EstiNet, ezCar2X, Eclipse MOSAIC, VanetSim, NetSim, VENTOS,demonstrating their current condition and capabilities for evaluating innovative situations in Vehicular network research. Depends on this demonstration, we highlight the unresolved research issues need to be resolved in current and future Vehicular network simulations.

Abstract: The current accelerated developments within the automotive sector have triggered a series of performance, comfort, safety and design-related issues. Hence, oftentimes manufacturers are challenged to combine various elements so as to achieve an attractive design, without diminishing the vehicle’s dynamic performance. In order to determine the vehicle dynamic performances we carried out an analysis by two methods. In the first part of the paper, we have used the analytical method to establish the dynamic performances of a vehicle. The second part of our study addresses another method to determine the star performances of the vehicle by means of computerized simulations. The first test aimed to determine vehicle starting performances for two vehicle models, with similar technical configuration, but with the same initial data. In the second test, we aimed at determining the start performance for the same car model, with the same initial data, but for different adhesion coefficients

Abstract: According to official statistics, road transport is one of the most dangerous and costly in terms of life and costs of hospitalization and post-accident medication. Thus, safety is a matter of great interest at national level and, perhaps internationally. Road safety on public roads in Romania is low compared to international standards. The mortality rate is more than twice the EU average. Given that road traffic and victim maintenance costs are a real economic problem, a European harmonization of the recording and assessment of events involving the bodily injuries of those involved in road events is necessary. Road events are one of the main causes of mortality in modern society. For this reason, the safety of motor vehicles has become the most important issue in their development. Road traffic injuries are a problem that can be controlled by proper attention to traffic avoidance strategies. Side impact is the second major cause of mortality and injury after frontal impact in road traffic analysis.

Abstract: As it stands now, rubber has been the main material used in the making of pneumatic vehicle tyres. Speed of the vehicle depends on many factors like steering geometry, inflation pressure, vehicle load, road temperature and environmental conditions. The main aim of this research is to develop a finite element approach and computationally evaluate the performance of a steady-state rolling tyre by changing the tyre tread patterns. The tyre normally composed of rubber and body-ply was investigated with regards to the effect of the inflation pressure. Tyre modeling using six different types of patterns was completed by using Creo parametric 3D modeling software and then the tyre was discretized into small elements through ANSYS R16.2. The rim area of the tyre was fixed and pressure was applied to the inside surface of the rim. Finite element analysis was completed by using ANSYS R16.2 and equivalent stress, contact stress and contact pressure were found out to identify the best tyre pattern. From the final results it was observed that, Pattern-I had good agreement of results as compared to other type of patterns which showed medium frictional stress and contact pressure.

Abstract: This paper presents the negative effects of the vibrations produced by railway transport systems upon the constructions in the neighbourhood of the railways. The railway vehicles in motion produce very high intensity vibrations. Through the soil, these vibrations are transmitted to the foundations of the constructions in the vicinity and consequently settlements, cracks, even collapses of buildings can occur. The paper contains a theoretical part where the features of free and forced vibrations of the track/vehicle system as well as the features of the vibrations of the vehicles displacing along a joint track are described, followed by a practical part in which are shown the results of measurements made to highlight the effects upon the constructions (values of accelerations, velocities and displacements).

Abstract: This paper describes general approach for creation the effective kinetic energy recovery system in mobile machines using flywheels. It’s should be a mechatronic system. The system with accelerometer-gyroscope and proportional, integral and differential controller (PID-regulator) is proposed as example of automatic control.

Abstract: The highway guardrail is the last secure defense which can protect the driver and passenger safety and make the vehicles along the original correct direction when out of control. Collision simulation between vehicle and semi-rigid waveform beam guardrail was achieved. Collision model was given and dimension optimization of the semi-rigid waveform beam guardrail was completed. Dynamic explicit finite element method was applied to simulate and analyze collision process. Optimized height of the lower beam and thickness of the upper and lower beams were obtained, which helped save material, solve the tripping phenomenon and increase safety property of the highway guardrail.

Abstract: The intent of this paper is to present a multi-domain and structural study of a hydraulic hybrid machine. The evaluation of different solutions is based on simulation approach, using LMS Imagine.Lab (Amesim) and Ansys Workbench software packages. Amesim provides a 1D simulation suite to model and analyze multi-domain intelligent systems, to predict their multi-disciplinary performance and Ansys Workbench Durability tool performs the high cycle fatigue life calculation. The multi-domain analyses are made for different constructive solutions at different drive ratio. The comprehensive fatigue calculations and results enable engineers to evaluate the main shaft design of the hydraulic motor in order to avoid failures under real world conditions. Some recommendations are made regarding possible solutions.