Influence of Drum Cutting Height on Shearer Cutting Unit Vibration by Co-Simulation Method

Adaptive height adjusting strategy research of shearer cutting drum

Shearer height adjusting is a key technology for shearer automation. Considering constraints of present shearer height adjusting, this paper built grey-markovian memory cutting algorithm after analyzing traditional shearer memory cutting algorithm. We firstly constructed prediction mechanism using grey model, then determined state transition probability matrix using markovian, so as to revise f...

Characteristic Analysis of Current Spectrum on Shearer Cutting Load

According to the disadvantages of former shearer cutting load measuring method and its low antiinterference ability, this paper proposes a new shearer cutting load measuring method based on the current spectrum. On the basis of load analysis of shearer cutting unit drive system, the theoretical models are established between cutting load and cutting motor current. Simulated load test to the ele...

Chip Formation Process using Finite Element Simulation “Influence of Cutting Speed Variation”

The main aim of this paper is to study the material removal phenomenon using the finite element method (FEM) analysis for orthogonal cutting, and the impact of cutting speed variation on the chip formation, stress and plastic deformation. We have explored different constitutive models describing the tool-workpiece interaction. The Johnson-Cook constitutive model with damage initiation and damag...

Modelling and Simulation of Metal Cutting by Finite Element Method

Simulation of Dna Cutting

The simulation of the main molecular operations used in DNA Computing can lead the researchers to develop complex algorithms and methods without the need of working with real DNA strands in-vitro. The purpose of this paper is to present a computer program which simulates a cutting process over DNA molecules which is an essential operation for the DNA computation. This simulation represents a us...