Abstract
The impact of a wheeled agricultural vehicle on the deformable support surface determines the vehicle's ability to move, as well as soil compaction, which is not desirable in agriculture. The agricultural machine must not cause more pressure on the ground than is permissible. Therefore, in the tasks of design numerical modelling of the agricultural vehicle movement or trailer, it is required to calculate the specified parameter. It is impossible to calculate without knowledge of the geometric characteristics of the contact spot associated with the normal deformation of the tire under normal load. To calculate these characteristics, it is necessary to have universal dependencies for determining the normal stiffness of the tire. These are available for tires of various purposes. The elastic properties of ultra-low pressure tires are insufficiently studied. Experimental studies of the elastic properties of these tires have been carried out with the authors participation. However, there are currently no dependencies to describe them. This does not provide the possibility of a correct design calculation of the influence of such tires on the soil. The purpose of the work: to develop a universal method for calculating the influence on the soil of agricultural vehicle. A universal method for calculating the impact of a wheeled agricultural machine on the ground has been developed. Universal design-experimental dependence for determining the normal stiffness of ultra-low pressure tires is obtained. It takes into account tire pressure, normal load under specific conditions and geometric characteristics.
Highlights
Tires influence on a deformable support surface determines the vehicle's ability to move, as well as soil compaction, which is not desirable in agriculture [1-4]
In the tasks of design numerical modelling of the agricultural machine movement, it is required to calculate the specified parameter. It cannot be calculated without knowledge of the geometric characteristics of the contact patch [5-8, 9-12] associated with the normal tire deformation under normal load
It was possible to get rid of the unknown value of the normal deflection Z in the formula (5) for calculating the coefficient of normal stiffness
Summary
Tires influence on a deformable support surface determines the vehicle's ability to move, as well as soil compaction, which is not desirable in agriculture [1-4]. In the tasks of design numerical modelling of the agricultural machine movement, it is required to calculate the specified parameter. It cannot be calculated without knowledge of the geometric characteristics of the contact patch [5-8, 9-12] associated with the normal tire deformation under normal load. To calculate these characteristics, it is necessary to have universal dependencies to determine the normal tire stiffness. There are currently no universal dependencies to describe them This does not provide the possibility of a correct design calculation of the influence of such tires on the soil. The aim of the research is the development a method for the influence design assessment of a wheeled agricultural vehicle on the soil
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
