- ISSN 0258-2724
- CN 51-1277/U
- EI Compendex
- Scopus
- Indexed by Core Journals of China, Chinese S&T Journal Citation Reports
- Chinese S&T Journal Citation Reports
- Chinese Science Citation Database
| Citation: | LIU Qihang, FENG Handui, LIU Shen, LI Beibei, LIU Xiumei. Ride Comfort Analysis of Suspension System of Mining Dump Truck Based on AMESim[J]. Journal of Southwest Jiaotong University. doi: 10.3969/j.issn.0258-2724.20230135
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Mining dump trucks are mainly used for small-scale mine transportation, often run on poor roads or with serious overloading and other conditions. Hydro-pneumatic suspension is widely used in large construction vehicles due to its nonlinear characteristics of stiffness and damping, which can better adapt to external load excitation changes. For the XDR80t mining dump truck produced by XCMG, the acceleration data of the tire center of mass and body were collected, and a method based on frequency domain integral was proposed to obtain the relative displacement data of the piston rod. AMESim simulation platform was used to establish a mechanical and hydraulic co-simulation model, and the variation trend of body vibration characteristics under different structural parameters of suspension was investigated. The results show that the damping hole diameter has a more obvious influence on the vibration state of the body. When the damping hole diameter is changed from 8 mm to 14 mm, the peak value of acceleration is reduced by about 49.27%, and the root mean square (RMS) value is reduced by about 49.42%. However, the pitch angle shows an increasing trend. With the increase in cylinder/rod diameter from 180/150 mm to 200/170 mm, the peak value of acceleration and RMS value decrease by 16.84% and 18.62%. When the pre-charge pressure is increased from 1.5 MPa to 2.25 MPa, the peak value of acceleration and RMS value decrease by 27.67% and 27.49%, and the pitch angle declines.
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