A Fast Calculation Method for Improving the Steering Arm of Mining Trucks with Macpherson Suspension

The steering arm has recently been frequently broken in a kind of mining truck with Macpherson suspension. To accelerate replacing the broken parts and minimize the economic cost, a fast calculation method for improving the steering arm is proposed in this paper. In this method, the forces on the steering arm are calculated by quasi-static analysis under a low vehicle velocity. Dynamic characteristics of the tire and road are partly included by considering the ranges of the rolling resistance coefficient and friction coefficient from the empirical values, which determines the torque on the steering arm under extreme conditions. The rigid–flexible coupling model for the left steering mechanism in ANSYS Workbench is established and solved to obtain the distribution stress on the steering arm under extreme conditions. Then, the reliability of the simulation results based on this fast calculation method is verified by the experiment. After determining an improvement scheme considering the economic and time cost, the satisfactory strength is obtained. The results illustrate that the strength of the improved steering arm has nearly doubled. Finally, the effectiveness of the improved steering arm is demonstrated by the users’ feedback after it is manufactured, installed, and used.

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Research on a fast calculation method and application for the radio wave propagation model

Management Innovation and Information Technology ◽

10.2495/miit131101 ◽

2014 ◽

Author(s):

Shaoqing Wang ◽

Jiyang Wang ◽

Ning Zhou

Keyword(s):

Wave Propagation ◽

Radio Wave ◽

Calculation Method ◽

Propagation Model ◽

Radio Wave Propagation ◽

Fast Calculation ◽

Wave Propagation Model

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Proton impact ionization and a fast calculation method

Journal of Geophysical Research Space Physics ◽

10.1002/jgra.50484 ◽

2013 ◽

Vol 118 (8) ◽

pp. 5369-5378 ◽

Cited By ~ 13

Author(s):

Xiaohua Fang ◽

Dirk Lummerzheim ◽

Charles H. Jackman

Keyword(s):

Calculation Method ◽

Impact Ionization ◽

Fast Calculation ◽

Proton Impact

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A Fast Calculation Method of Optimal Ratio of Outer Diameter and Axial Length for Torque Improvement in Switched Reluctance Motor

IEEE Transactions on Industry Applications ◽

10.1109/tia.2018.2850024 ◽

2018 ◽

Vol 54 (6) ◽

pp. 5802-5811 ◽

Cited By ~ 3

Author(s):

Kyohei Kiyota ◽

Shinji Nakano ◽

Akira Chiba

Keyword(s):

Axial Length ◽

Calculation Method ◽

Switched Reluctance Motor ◽

Outer Diameter ◽

Fast Calculation ◽

Switched Reluctance ◽

Optimal Ratio ◽

Reluctance Motor

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Limitations of vehicle movement resistances: rolling resistance

AUTOBUSY – Technika Eksploatacja Systemy Transportowe ◽

10.24136/atest.2018.394 ◽

2018 ◽

Vol 19 (12) ◽

pp. 256-259

Author(s):

Piotr Wrzecioniarz ◽

Wojciech Ambroszko ◽

Aleksandra Pindel

Keyword(s):

Rolling Resistance ◽

Resistance Coefficient ◽

Rolling Resistance Coefficient ◽

Vehicle Movement

In the paper limitations and exemplary methods of rolling resistance minimization are described. Changes of value of rolling resistance coefficient during years and values for exemplary rolling pairs are presented. Conclusions about future progress are formulated.

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Rolling Resistance Estimation for PCR Tyre Design Using the Finite Element Method

10.5772/intechopen.94144 ◽

2020 ◽

Author(s):

Sutisna Nanang Ali

Keyword(s):

Finite Element Method ◽

Finite Element ◽

Rolling Resistance ◽

Resistance Coefficient ◽

Total Force ◽

Exhaust Gas Emission ◽

Deformation Force ◽

Rolling Resistance Coefficient ◽

Alternative Designs ◽

Element Method

This study presents rolling resistance estimation in the design process of passenger car radial (PCR) tyre by using finite element method. The rolling resistance coefficient of tyres has been becoming one of main requirements within the regulation in many countries as it is related to the level of allowable exhaust gas emission generated by vehicle. Therefore, the tyre being designed must be digitally simulated using finite element method before the tyre is manufactured to provide a high confident level and avoid unnecessary cost related to failure physical product testing. The simulation firstly computes the deformation of several alternative designs of tyres under certain loading, and then the value of deformation force in each tyre component during deformation took place is calculated. The total force of deformation is considered as energy loss or hysteresis loss resulted in tyre rolling resistance. The experiment was carried out on three different tyre designs: two grooves, three grooves, and four grooves. The four groove tyre design gave the smallest rolling resistance coefficient (RRC). Finally, the simulation was continued to compare different crown radius of the tyres and the result shows that the largest crown radius generates the lowest rolling resistance.

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