Resistance and Consumption Reduction Mechanism of Bionic Vibration and Verification of Field Subsoiling Experiment

Abstract

This study proposed a design method for forced-vibration subsoiling to reduce resistance and consumption. The vibration digging parameters of the Antlion larvae were obtained by high-speed camera, and a forced-vibration subsoiling shovel handle and six different shovel tips were designed by the non-smooth resistance-reducing surface design method. The resistance-reducing and consumption-reducing effects were verified in the field subsoiling experiment. The results showed that the resistance of subsoiling gradually decreased with the vibration frequency increasing. This vibration subsoiling method could not only reduce resistance but also reduce the total energy consumption, the resistance reduction rate reached 14.2–21.2%, and the total energy consumption was reduced by 11.2–16.5%. It could achieve the comprehensive subsoiling effect and create the soil conditions with the combination of loose and firmness. The non-smooth surface contributed to the reduction in resistance, and the forward speed had a more negligible effect on the resistance of subsoiling. The results had demonstrated that the combination of high-frequency vibration and non-smooth surfaces helped to reduce the cohesion of the soil, reduce the angle of internal friction in the soil, destroy the water film layer on the contact surface between the soil-touching components and the soil, change the soil flow state, and reduce the adhesion of the interface layer. The design method in this study could not only be applied to the design of vibration resistance reduction in the subsoiler but also had significance for the design of the other soil-contacting components.

Simulation and Structural Analysis of a Flexible Coupling Bionic Desorption Mechanism Based on the Engineering Discrete Element Method

“…where ρ is the soil density, kg•m −3 ; m is soil mass, kg; V is the inner volume of the cutting ring, m 3 . Through measurement and calculation, the soil's dry-based moisture content is presented in Table 1, with an average value of 21.09%.…”

“…In turn, a large adhesion force is generated, which makes it more difficult for the components to operate smoothly. The increase in mechanical working resistance caused by soil adhesion directly affects the energy consumption and working efficiency of machinery, such as disc harrows, furrow plows, subsoilers, rotary cultivators, and excavators [3,4]. When the soil adhesion is large, it can directly determine whether the machine is suitable for operation.…”

Biomimetic Design of Soil-Engaging Components: A Review

“…They can swiftly construct conical traps by backing up and vibrating the back of their bodies [ 81 ]. Wu and Zhou et al [ 82 , 83 ] used scanning electron microscopy to obtain the non-smooth surface morphology of antlions and designed a biomimetic subsoiler tip that can reduce draught force. Furthermore, they used a highspeed camera to obtain the vibration digging parameters of the antlion and combined it with the bionic subsoiler shovel.…”

Development and Evaluation of Mechanical Harvesting of Root Crops and Its Performance Optimization

“…Using Engineering bionics theory, to get inspiration from the animal structures, is another approach to reducing the digging resistance and damage rate. These animal structures demonstrate a better crushing soil ability than the normal plane shovel [36][37][38][39][40][41][42]. Especially the soil burrowing animals, in order to adapt to their living conditions, after millions of years of evolution, have developed digging structures with excellent mechanical properties and delicate conformation.…”