scholarly journals Impact of Pavement Roughness and Suspension Systems on Vehicle Dynamic Loads on Flexible Pavements

2021 ◽  
pp. 100045
Author(s):  
Shahram Misaghi ◽  
Cesar Tirado ◽  
Soheil Nazarian ◽  
Cesar Carrasco
Keyword(s):  
Flexible Pavements ◽  
Dynamic Loads ◽  
Vehicle Dynamic ◽  
Suspension Systems ◽  
Pavement Roughness

scholarly journals DETERMINATION OF MOST SIGNIFICANT FACTORS FOR ANALYSIS OF HIGHWAY OPERATING CONDITIONS

2017 ◽  
Vol 16 (6) ◽  
pp. 493-497
Author(s):  
M. G. Solodkaya
Keyword(s):  
Real Life ◽  
Operating Conditions ◽  
Dynamic Loads ◽  
Vehicle Speed ◽  
Vehicle Dynamic ◽  
The Road ◽  
Road Pavement ◽  
On The Road ◽  
Significant Factors ◽  
Road System

Traffic circulation on highways is a random process. Therefore automotive damage rate and, respectively, roads on which they are moving is subjected to regularities of random processes. Dynamic processes of vehicle-road interaction are determined to various extents by a host of factors that include road pavement evenness and characteristics of moving vehicles. For this reason the following task has been set: to reveal the most significant factors and mathematically correlate values of vehicle dynamic loads with a quality of road pavement and vehicle speed. Such task statement has not been solved adequately and this situation determines importance and novelty of the investigations in the given direction. While solving the mentioned task the investigations which have been carried out under real-life conditions and with the help of real-life objects are considered as the most reliable ones. However, preparation and execution of such experiments as needed significantly complicates their implementation. In this regard it looks rather expediential to combine a factorial experiment with the tests of a checked model while using ECM with stage-by-stage parameter fixation of working processes passing in “vehicle-road” system, comprehensive assessment pertaining to influence of the selected factors and selection of their optimum combination. Mathematical dependence has been obtained to evaluate influence of several external factors on optimization of vehicle dynamic load on the road. This component makes it possible to attain a simplified and adequate description of element interaction in “vehicle – road” system. While investigating influence of pavement irregularities on maximum dynamic loads on the road influence rate of the selected factors is determined in the following sequence: vehicle weight, pavement evenness and speed of transport facility.

Research on the Simulation of Random Road Excitation in Time-Domain

2015 ◽  
Vol 738-739 ◽  
pp. 508-511 ◽  
Author(s):  
Yue Feng Zhu ◽  
Li Wang
Keyword(s):  
Dynamic Loads ◽  
Ar Model ◽  
Road Transportation ◽  
The Road ◽  
Pavement Roughness ◽  
Road Roughness ◽  
Moving Vehicles ◽  
Road Excitation ◽  
Increasing Demand ◽  
The Given

With the development of national economy and the increasing demand for the road transportation, the vehicles are widely used. The dynamic loads imposed by moving vehicles have variations due to the surface roughness and the larger dynamic loads can affect the pavement performance and life. In order to improve the accuracy of the reconstruction of the road roughness, the time series model—AR model was established based on the given standard pavement roughness PSD which can provide the theory conditions of vibration control and the interaction between vehicles and road.

scholarly journals Optimization of the Vibrational Comfort of Passenger Vehicles through Improvement of Suspension and Engine Rubber Mounting Setups

2018 ◽  
Vol 2018 ◽  
pp. 1-9 ◽  
Author(s):  
Felipe L. Mrad ◽  
Duarte M. L. Machado ◽  
Gutierrez J.C. Horta ◽  
Almeida U. Sad
Keyword(s):  
Interaction Analysis ◽  
Well Being ◽  
Human Interaction ◽  
Vehicle Dynamic ◽  
Suspension Systems ◽  
Passenger Vehicles ◽  
The Past ◽  
Shock Absorbers ◽  
Comfort Levels ◽  
Measurement Methodology

The aim of this work is to develop a measurement methodology to perform a vibration analysis of a vehicle. It proposes new setups in the suspension systems, including springs, shock absorbers, and rubber mountings of the engine system, to improve the passengers’ comfort levels. The influence of each of these modifications in the vibration levels at specific points is analyzed. The importance of human interaction analysis is clear as, in the past, it was frequently left aside. This is because only the vehicle dynamic behavior is generally emphasized in the vehicles designed. Therefore, this work stresses that concerns about human vibration levels result in vehicles with good performance also in comfort levels, focusing on the users’ well-being. A combination of different sets of rubber mountings, springs, and shock absorbers are tested. The changes proposed in this paper are analyzed in sequence and, based on the results, the best combination is proposed.

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