Improving the operational efficiency of Vaderstad disk openers with optimized geometry and induced vibration

本文的研究重点是通过优化磁盘几何形状和适当的诱导振动来提高Vaderstad磁盘开启器的操作效率。本研究的目的是找出与圆盘形状及其诱导振动相关的主要参数对：(1)圆盘与土之间摩擦力方向的变化，(2)接触面弹性变形，(3)摩擦系数变化的影响。诸如：配对表面上的法向载荷、接触面拓扑结构、振动方向、诱导振动的幅度/频率和切削速度等因素将首先在仿真环境中建模。通过传统的数值优化方法，将识别出影响最大的因素并进行排序。一个实验室规模的设置将开发用于假设检验和评估。实验装置将包括一个振动切割工具，一个圆盘和一个密实土样品，其密实度，质地和含水量可以控制。

The proposed research focuses on improving the operational efficiency of Vaderstad disk openers with optimized disk geometry and properly induced vibration applying on the disk openers. The objective of this study is to find the effect of major parameters related to the disk shape and induced vibration in it on: (1) change of the direction of friction force between the disk and soil, (2) elastic deformation of contact surface, and (3) change of friction coefficient.Factors such as: normal load on the paired surface, contact surface topology, direction of the vibration, amplitude/frequency of the induced vibration, and the cutting velocity will be modeled within a simulation environment first. Via conventional numerical optimization methods, the most influential factors will be identified and ranked. A lab-scale setup will be developed for hypothesis testing and evaluation. The experimental setup would consist of a vibrating cutting tool, a disk, and a compact-soil specimen, whose compactness, texture, and water content can be controlled.