- 上一篇：轮毂轴承有限元分析模型英文文献和中文翻译
- 下一篇：煤炭冲击式破碎机英文文献和中文翻译
The simplified model of the internal rotor is circular, the rotor contact with the material is changed from stone and metal into contact with the stone gravel contact rotors so after the body set up to simplify the inside limestone materials, as ADAMS is not in the default properties of limestone, so the inside of the properties of the rotor will set: elastic modulus 4.1e +010 N/ m2, the density of 1500 kg/ m3, Poisson's ratio of 0.3, to simulate the properties of limestone, set the rotor outside the body material for steel, as elastic modulus: 2.07e +011 N/ m2, density: 7801 kg/ m3, Poisson's ratio is set to 0.29; the tip set extra hard set attributes rotors with the bulk of the material outside [3]. Materials into the mouth of rotor in ADAMS by adding material ,in the actual case, it is necessary to broken materials for the general shape of irregular limestone, feed grain size is smaller than 55mm, so in this article to add size to simplify the side from 20mm to 50mm cube, set the attributes for limestone properties. Rotation set the parameters: the model of the earth and a hinge between the increase in the hinge on a set rotation, rotation for the anti-clockwise direction, and speed were set to 1400rpm, 1450rpm, 1500rpm, 1600rpm, 1700rpm, 1750rpm, 1780rpm and 1800rpm, according to simulating the different materials to accelerate the centrifugal force and friction in the role, after the main material thrown out after the first collision. Impact of stones to rotor is described another article. Add constraints and access to: the inside of the body in the rotor (for the limestone material) and outside (for steel materials), as well as the main material in the first throw (material for steel) on February 2 between the lock together so that they become integrated in the campaign. In each of the material on the rotor and add body, as well as the main material left in the first entity to the physical contact, contact force as a collision, the stiffness is set to 1.0e +008 N / mm, damping ratio is set to 1.0e +004, as the depth of penetration 1.0e-004mm, set up in accordance with the friction of Coulomb friction settings, static coefficient of friction as 0.3, dynamic coefficient of friction as 0.1, the rest of the ADAMDS in accordance with the default settings [4]. Simulation: time for the 1.5s, steps for 5000. T the basic principle of these parameters’ determining is that in all the stone was thrown out of the guarantee under the premise, as far as possible to save time and improve the accuracy of simulation. V. THE SIMULATION RESULTS Using ADAMS software model of the fore-going and in accordance with the parameters set binding level, when speed is1400 rpm, 1500rpm, 1600 rpm, 1700rpm and 1800rpm ,you can get that the tip set extra hard is expected in the first overall by the impact, as shown in Figure 3. Figure 3, each time a collision in the chart for a peak performance. It can be seen in the rotor 1400rpm, the rocks speed up evenly, when it is in1.4454s all the stone was thrown out; when it is in 1600rpm and 1700rpm the impact is relatively stable, the average impact (of each impact Divided by the number of affected) are more or less the same, stone in the 1.33s and 1.31s respectively, were all out; the numbers of collision is least in 1800rpm. This may be due to the increasing speed, the stones are thrown out under a strong centrifugal when they are not fully collision, although the largest impact on average and the largest impact are the biggest impact, it apart from the rest of the outside maximum impact speed than the previous Small. As it can be seen from Figure 3, in 1800rpm ,stone thrown out all the time is only 1.25s, obviously, the stone has not been sufficient to speed up the collision ,then they are throw out of rotor, there will be adversely affected to broken effect. This shows that the crushing effect is not always increase with the speed changing, and the biggest impact and the average impact will be a great main cast is expected to accelerate the wear and tear in the first, long-term impact would wear off the main material of the first life greatly Shortened, and the body of the rotor balancing great.