Journal of Agricultural Machinery Engineering ISSN:2799-8673(Print) 2799-8819(Online) 농업기계공학

The mechanization rate of field crop farming in Korea remains significantly lower at 63.3% compared to rice farming at 99.3%. While crops like garlic (59.7%) and onion (31.4%) show progress, pepper and cabbage still record single-digit mechanization rates in seeding and harvesting stages. This study develops a driving performance simulation model for a fourwheeled electric drive field agricultural platform under various speed and slope conditions. The platform features a 2,000 mm wheelbase, 2.25-ton total weight, 1,400 mm ground clearance, and 40 kWh battery system with variable track widths (1,000 mm, 1,200 mm, 1,500 mm) to accommodate domestic field crop cultivation methods. Using RecurDyn software, a multi-body dynamics analysis was conducted to simulate climbing performance Simulation conditions included slopes of 6°, 15°, and 24° at driving speeds of 1 km/h and 5 km/h, reflecting the actual slope distributions in major Korean field crop regions. Tire model parameters incorporated vertical stiffness of 76 N/mm, vertical damping ratio of 0.2, longitudinal slip stiffness of 50,000 N/%, and lateral slip stiffness of 60,000 N/rad. Results showed torque increased proportionally with climbing angle across all wheel positions. At 5 km/h, front wheels experienced higher torque than rear wheels across all slopes. Maximum torque reached 801 Nm at 24° climbing angle, demonstrating sufficient driving force capability on steep slopes. This study provides essential baseline data for the development of electric agricultural platforms tailored to Korea’s field crop farming conditions and contributes to enhancing mechanization in underdeveloped crop sectors.