Nonlinear Characteristic Analysis of Screening Rod of Elastic-Rod Vibrating Screen
LIU Chu-sheng
LU Jin-xin
Abstract：In order to probe into the influence of motion of screening rod of elastic-rod vibrating screen on the screening efficiency, the stability of screening rod's periodic motion was investi-gated using a Poineare mapping method. The results show that the evolution process of screen-ing rod's motion state was as follows along with the change of working frequency ω: from al-most periodic motion to doubling of torus state, to phase locking state and then to chaos state. Taking an elastic-rod vibrating screen with the amplitude of 4 mm and the screening rods gap of 8 mm for an example, when the working frequency ω<55 rad/s, the screening rods just impact each other on the single-side; when 55 rad/s<ω<55.9 rad/s, the screening rods work with stable almost periodic motion; when 55.9 rad/s<ω<56.14 rad/s, the Poincare mapping pro-jection drawing of screening rod's motion is an attractive invariant loop; when 56.14 rad/s<ω <56.2 rad/s, the Poincare mapping projection drawing of screening rod's motion is a doubling of torus; when 56. 2 rad/s<ω<56. 4 rad/s, the Poincare mapping projection drawing of screening rod's motion is a phase locking; when ω>56.4 rod/s, the Poincar6 mapping projec-tion drawing of screening rod's motion is a chaos.
Keywords：elastic-rod vibrating screenscreening rod motionnonlinear characteristic
Publication Date：2009-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：5( 476-480 )