Agricultural Bevameter Test Rig
Applies controlled hydraulic vertical loads to soil penetration plates while logging displacement.
Agricultural Engineering / Bekker Terramechanics Sinkage
FREE TO EXPLORELABORATORY 37 · AGRICULTURAL ENGINEERING
Bekker Theory of Off-Road Terramechanics & Rigid Wheel Sinkage
Evaluate pressure-sinkage behavior of agricultural soil under plate loading to determine Bekker terramechanic sinkage exponent and cohesive/frictional moduli. Explore interactive farm machinery simulation, irrigation hydraulics, and agricultural engineering telemetry.
FARM MACHINERY · SOIL & WATER · POST-HARVEST · STRUCTURES
Your virtual agricultural engineering laboratory.
SOIL NORMAL PRESSURE P—
FIELD & TEST CELL TELEMETRY
Ready to sample with Sinkage z_s = 3.0 cm.
Adjust Sinkage z_s, then execute agricultural trial.
Agricultural engineering telemetry and biosystems states are evaluated rigorously using 64-bit IEEE 754 precision. Residuals reflect ordinary least-squares regression across successive observations. Continuous data structures support high-fidelity agricultural and environmental modeling.
Agricultural assumptions and boundary condition limits
The power-law relationship applies to vertical sinkage up to 6.0 cm; at extreme sinkage, lateral soil flow causes blowout. Evaluated on tilled agricultural loam soil using a circular bevameter flat plate of diameter 10.0 cm (b = 5.0 cm). Data transformed into natural logarithmic coordinates ln(z_s) and ln(p) to extract sinkage exponent n and combined modulus k.
Agricultural apparatus & field instrumentation sensors.
Interchangeable Circular Bevameter Plates
Provides hardened steel plates of 50 mm, 100 mm, and 150 mm diameters for Bekker modulus separation.
High-Precision Hydraulic Pressure Transducer
Measures hydraulic actuator pressure to compute plate normal contact force with 0.05 kN precision.
Linear Potentiometer Sinkage Sensor
Monitors plate vertical penetration into the soil surface with 0.1 mm measurement accuracy.
Digital Strain-Gauge Telemetry Console
Logs simultaneous force-displacement signals at 50 Hz during continuous plate depression.
Core Soil Sampler & Bulk Density Ring
Extracts undisturbed 100 cm³ soil cores to establish pre-test bulk density and moisture content.
FOLLOW THE METHOD
A reason behind every step.
Evaluate pressure-sinkage behavior of agricultural soil under plate loading to determine Bekker terramechanic sinkage exponent and cohesive/frictional moduli. Standardized parameter settings: 1.0, 2.0, 3.0, 4.0, 5.0, 6.0 cm.
01
Soil Surface Preparation and Bevameter Setup
Level the tilled field test patch, remove loose surface crop residue, and anchor the bevameter reaction truck firmly over the site.
02
Plate Mounting and Zero Contact Referencing
Attach the 100 mm diameter circular test plate, lower it until light initial contact (0.5 kPa) occurs, and zero the displacement sensor.
03
Constant-Velocity Hydraulic Loading
Advance the hydraulic actuator downward at a controlled rate of 10 mm/s, driving the plate into the soil up to 6.0 cm sinkage.
04
Continuous Force-Sinkage Telemetry Logging
Record instantaneous sinkage depth z_s and vertical contact force continuously throughout the penetration stroke.
05
Discrete Pressure-Sinkage Extraction
Extract normal contact pressure p = F / A_p at discrete sinkage depths of 1.0, 2.0, 3.0, 4.0, 5.0, and 6.0 cm.
06
Logarithmic Transformation and Regression
Compute natural logarithms ln(z_s) and ln(p), plotting the linearized curve and determining the Bekker sinkage exponent n from the slope.
YOUR NOTEBOOK · 0 OBSERVATIONS
Turn measurements into agricultural engineering insight.
Points are your recorded observations. The solid regression line validates Bekker Terramechanics Sinkage mathematical scaling.
LINEAR REGRESSION FIT · y = mx + b
ln(p) = n · ln(z_s) + ln(k) = 0.8500 · ln(z_s) + 2.1000
| # | Plate Sinkage z_s (cm) | Soil Normal Pressure p (kPa) | ln(Sinkage z_s) (ln[cm]) | ln(Normal pressure p) (ln[kPa]) | Remove |
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