An Elastic Analysis of Multiroll Endless Web Systems

1979 ◽  
Vol 101 (4) ◽  
pp. 308-313 ◽  
Author(s):  
Tsai-Chen Soong ◽  
Chun Li

A procedure for analyzing a multiroll endless web system is presented. The web is divided into endless, parallel strips which are longitudinally elastic and possess shear rigidity. The strips are wrapped over frictional cylinders and then required to pass through predetermined points on the contact arc so that compatibility among neighboring strips is maintained. Contact is assumed to be nonslipping until transverse shear and belt tension components exceed friction. Transient and steady-state motions with and without edge guide can be studied. Problems concerning edge guide force, steering moment, pivoting cylinders, rate of drift, and effect of conicity of web, taper of cylinder, and initial unstretched length of the web, etc., can be analyzed.

2019 ◽  
Vol 39 (2) ◽  
pp. 262-271
Author(s):  
Yukan Hou ◽  
Yuan Li ◽  
Yuntian Ge ◽  
Jie Zhang ◽  
Shoushan Jiang

Purpose The purpose of this paper is to present an analytical method for throughput analysis of assembly systems with complex structures during transients. Design/methodology/approach Among the existing studies on the performance evaluation of assembly systems, most focus on the system performance in steady state. Inspired by the transient analysis of serial production lines, the state transition matrix is derived considering the characteristics of merging structure in assembly systems. The system behavior during transients is described by an ergodic Markov chain, with the states being the occupancy of all buffers. The dynamic model for the throughput analysis is solved using the fixed-point theory. Findings This method can be used to predict and evaluate the throughput performance of assembly systems in both transient and steady state. By comparing the model calculation results with the simulation results, this method is proved to be accurate. Originality/value This proposed modeling method can depict the throughput performance of assembly systems in both transient and steady state, whereas most exiting methods can be used for only steady-state analysis. In addition, this method shows the potential for the analysis of complex structured assembly systems owing to the low computational complexity.


2000 ◽  
Vol 27 (9) ◽  
pp. 1359-1362 ◽  
Author(s):  
Alan S. Rodger ◽  
Iain J. Coleman ◽  
Mike Pinnock

1994 ◽  
Vol 49 (15) ◽  
pp. 10572-10576 ◽  
Author(s):  
C. H. Lee ◽  
G. Yu ◽  
B. Kraabel ◽  
D. Moses ◽  
V. I. Srdanov

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