Interacting analysis between wheel and sand particles based on DEM and its validation with experiments

Shin, Yun Ho; Jeong, Jisoo; Jun, Chul-Woong; Sohn, Jae Hak

doi:10.1007/s12206-020-1013-7

Cited by 11 publications

(1 citation statement)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to the need to consider the shape and contact forces of particles, the discrete element method (DEM) based on EDEM software has been widely used to model soil [6][7][8]. The interaction between components and soil under various working conditions can be well simulated by combining the DEM with MBD technique [9,10]. Additionally, hydraulic simulation technology based on AMESim has been widely used to analyze the response characteristics of hydraulic systems [11,12].…”

Section: Introductionmentioning

confidence: 99%

Fatigue Analysis of Dozer Push Arms under Tilt Bulldozing Conditions

et al. 2022

View full text Add to dashboard Cite

Tilt bulldozing generates unbalanced loads on two push arms, which leads to the service lives of the two push arms being different. Because the push arms rotate in triaxial directions during tilt bulldozing, it is difficult to accurately analyze the fatigue life of the push arm with one specific boundary condition and loading history. Therefore, a fatigue analysis of the push arms under tilt bulldozing conditions is proposed based on co-simulation of RecurDyn-EDEM-AMESim in this paper. The control of tilt bulldozing conditions is realized automatically according to the tilt angle and blade depth. The dynamic loads of the push arms are accurately calculated in this virtual model. Subsequently, the stress–time histories are obtained to investigate the fatigue lives of push arms. Both the overall damage and the initiation positions of the cracks are predicted herein. It is determined that the fatigue lives of the right and left push arms are 7,317.84 h and 39,381.89 h, respectively. Thus, the life of the push arm on the blade’s tilted side is reduced by 81.42% compared to the other side. Additionally, experimental tests are conducted to verify the accuracy of the virtual model. Analysis results indicate that the strains of the push arms according to the virtual simulation are close to those measured in the experiments.

show abstract

Section: Introductionmentioning

confidence: 99%

Fatigue Analysis of Dozer Push Arms under Tilt Bulldozing Conditions

et al. 2022

View full text Add to dashboard Cite

show abstract

Virtual vibration test rig for fatigue analysis of dozer push arms

Hou,

Li,

et al. 2024

Int Journal of Mech Sys Dyn

View full text Add to dashboard Cite

To obtain accurate fatigue life results for construction machinery components, acquiring load spectra is crucial, as their authenticity and validity directly determine the precision of the analysis. In working conditions, component attitudes change continuously, but they remain static on the vibration test rig (VTR), so the acquired target signals should match with the actual component attitudes in the driving signal generation. This paper proposes an efficient and economical simulation‐based virtual VTR for fatigue analysis of dozers. First, the relationship between the push arm rotation angle and the cylinder stroke is established, since the cylinder strokes can be measured easily in data acquisition experiments. Second, load decomposition is used to determine the attitude relationship between virtual VTR conditions and actual conditions, and target signals are calculated based on this attitude relationship and measured data. According to the system's frequency response function, the driving signals are iterated until the system's response signals converge with the target signals. Finally, the iteratively obtained load spectra are utilized for fatigue life analysis. The results show that the virtual VTR can effectively and accurately obtain the results of fatigue analysis and has engineering application significance.

show abstract