论文部分内容阅读
分离机转鼓具有复杂的子午面,并且存在各种型式的削弱,如:被分离产品的排出口,制动装置下的开孔和其他特殊用途的孔。这种结构的应力应变状态是假设分离机转鼓为轴对称的。当计算轴对称结构时,按有限元法将各种横截面离散为环状单元,此时常采用矩形和三角形截面的环状单元。这种单元具有可借助于不等距矩形网格实现划分子午面的功能。在这种方法中,大量的单元划分为具有矩形的截。为了提高描述边界上物体子午面的精度,常采用三角形和四边形的单元,这一改进可以很好地描述极为广泛的实际对象,但是,当边
The separator drum has a complex meridian surface and various types of weakening exist, such as the outlet of the product to be separated, openings under the brake device, and other special-purpose holes. The stress-strain state of this structure assumes that the separator drum is axisymmetric. When calculating the axisymmetric structure, various cross-sections are discretized into ring-shaped elements according to the finite element method. In this case, the ring-shaped elements with rectangular and triangular cross-sections are often used. Such a unit has the function of dividing the meridian plane by means of a non-equidistant rectangular grid. In this method, a large number of cells are divided into segments having a rectangular shape. In order to improve the accuracy of describing the meridian of the object on the boundary, triangles and quadrilaterals are often used. This improvement can well describe a very wide range of real objects. However,