Simulation of disc cutting tool operation on stratified rocks
Referat wygłoszony
| Status: | |
| Autorzy: | Jonak Józef, Podgórski Jerzy |
| Rok wydania: | 2012 |
| Język: | angielski |
| Źródło: | ECCOMAS European Congress on Computational Methods in Applied Science and Engineering, 10-14.09.2012 r., Wiedeń, Austria |
| Państwo wystąpienia: | POLSKA |
| Efekt badań statutowych | NIE |
| Abstrakty: | angielski |
| Disc tools are one of the most popular mining tools that ensure achieving high efficiency. They have been researched for years, mainly in case of so called symmetrical disks used in full-face shearers. Influence of ground stratification on parameters of disc cutting tool is still not deeply investigated and is intensively researched both empirically and using analytical and numerical methods. Numerical simulations using FEA were performed to answer the question regarding influence of the stratification inclination on the loosening trajectory and critical forces. The analysis takes into account operation of an asymmetrical disk with draft angle 30°. The issue has been analyzed as 2D state of strain. One of the more interesting observations visible after analyzing computational results is occurrence of two areas with clearly different values of loosening forces. Boundaries between those areas can be characterized with rapid change of value that is different comparing to observation of force changes in the issues of cutting stratified grounds. Min. values of the loosening forces were observed at approx. 150° foliation angle, max. values at angles larger than 45°. |
