Heavy commercial vehicle yaw control simulation

Fojtášek, Jan

doi:10.21595/vp.2018.19943

Cited by 1 publication

(2 citation statements)

References 5 publications

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“…When a wheel was lifted and the contact with the ground broken, the solver calculation was not interrupted. However, the simulation calculation detected the opposite effect and it was possible to assess the behaviour of the system although both the dynamic action and the condition were impossible in reality [19,23,26,29].…”

Section: Types Of Attachment Of the Dynamic Systemmentioning

confidence: 99%

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Verifying the Lifting and Slewing Dynamics of a Harvester Crane with Possible Levelling When Operating on Sloping Grounds

Mergl

Kašpárek

2022

Forests

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This paper focuses on the force and torque load of a harvester hydraulic crane employed on sloping grounds, both levelled and not levelled. Field research was conducted for this purpose and the results were compared with a dynamic analysis of the crane in MSC Adams. It was found that levelling the slewing platform of the crane is necessary for use on sloping grounds, primarily because the effect on the force and lifting torques is reduced. The research showed that when the slope of the slewing gear is up to −12°, the lifting torque reaches a higher maximum lifting force than when the slewing gear is in a horizontal position (0°). As part of the theoretical verification by a dynamic analysis of the crane and the AH6 machine, a different pressure was detected in the lifting cylinder of the crane compared to the field research. The total deviation between the simulation and the field research was 9.82%. The slewing torque of the hydraulic crane without the slewing bearing being levelled can be characterized 97.38% by a parabola whose vertex is located in front of the front part of the machine and falls as the crane moves left or right. Overall, it can be determined that when the crane rotates up a slope, whether it is from left or right, the slewing torque reaches the lowest values, and its value increases as the crane gets closer to the front of the machine (along the longitudinal axis of the machine). This change in the slewing torque is then characterized by a parabola. Furthermore, an effect was observed of the slewing gear slope on the lifting torque, which reached higher values in a tilted position than on a flat surface.

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Section: Types Of Attachment Of the Dynamic Systemmentioning

confidence: 99%

“…To achieve shorter simulation times, the graphic restoration of the simulated model should be turned off during the simulations [23,24]. This does not shorten the calculation time but it does shorten the time of the simulation display when solving a dynamic task.…”

Section: Introductionmentioning

confidence: 99%

Verifying the Lifting and Slewing Dynamics of a Harvester Crane with Possible Levelling When Operating on Sloping Grounds

Mergl

Kašpárek

2022

Forests

View full text Add to dashboard Cite

show abstract

Heavy commercial vehicle yaw control simulation

Cited by 1 publication

References 5 publications

Verifying the Lifting and Slewing Dynamics of a Harvester Crane with Possible Levelling When Operating on Sloping Grounds

Verifying the Lifting and Slewing Dynamics of a Harvester Crane with Possible Levelling When Operating on Sloping Grounds

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