Experimental Determination of the Roller Chain Load Distribution

1983 ◽  
Vol 105 (3) ◽  
pp. 331-338 ◽  
Author(s):  
M. R. Naji ◽  
K. M. Marshek
Keyword(s):  
Experimental Study ◽  
Experimental Determination ◽  
Elastic Properties ◽  
Load Distribution ◽  
Noticeable Effect ◽  
Roller Chain ◽  
Chain Link ◽  
A Chain ◽  
Theoretical Results

An experimental study was conducted to determine the effect of elastic properties, geometric variations, and lubrication on roller chain load distribution. Comparison was made with the theoretical results for a test chain on a 20-tooth sprocket. The load distribution was found for a large number of cases to be independent of the elastic properties of the chain and the sprocket. The load distribution for the chain on a driver sprocket differed from that for a chain on a driven sprocket because of the change in direction of the friction force. Lubrication had no noticeable effect. A large pitch for the sprocket teeth was found to amplify the tension in the chain link.

Analytic and Experimental Study of the Load Distribution on Spline Joints Length Considering the Contact Rigidity of the Bearing Surfaces

2012 ◽  
Vol 162 ◽  
pp. 74-83 ◽  
Author(s):  
Dan Mărgineanu ◽  
E. Mărgineanu ◽  
E.S. Zăbavă ◽  
A. M. Fârtă
Keyword(s):  
Experimental Study ◽  
Mechanical System ◽  
Elastic Properties ◽  
Load Distribution ◽  
Degrees Of Freedom ◽  
Surface Profile ◽  
Contact Rigidity ◽  
Contact Points ◽  
Actual Load ◽  
Contact Surfaces

The spline joints transmit torque from shafts to rotors by multiple contact surfaces. The joint's mechanical system is, therefore, undetermined, i.e. the number of contact points is much larger than the number of restricted degrees of freedom. Thus, the actual load distribution is greatly influenced by the joints elements elastic properties and their geometrical errors and surface profile. In this paper, an analytical and experimental study for the load distribution on the in joints length caused by the finite rigidity of the joints elements is presented.

scholarly journals The change in elastic properties on replacing the potassium atom of Rochelle salt by the ammonium group

1928 ◽  
Vol 121 (787) ◽  
pp. 122-130 ◽  
Keyword(s):  
Experimental Determination ◽  
Elastic Properties ◽  
Complex Molecule ◽  
Potassium Atom ◽  
Physical Effect ◽  
Rochelle Salt ◽  
Chemical Changes ◽  
Ammonium Group ◽  
Sodium And Potassium

In a former paper the author made an experimental determination of the elastic properties of crystals of Rochelle salt or Potassium Seignette salt, a double tartrate of sodium and potassium with the formula Na. K. C 4 H 4 O 6 4H 2 O. Ammonium Seignette salt (NaNH 4 C 4 H 4 O 6 4H 2 O) belongs to the same isomorphous group, and can be obtained in large crystals. It was thought that some interesting results should be obtained on determining the elastic properties of this latter salt, where the ammonium group merely replaces the potassium atom. A comparison of the two results should give some indication of the physical effect due to these chemical changes in the complex molecule.

Experimental determination of the elastic properties of a compacting sediment

1997 ◽  
Author(s):  
Brian E. Hornby ◽  
Craig D. Johnson ◽  
John M. Cook ◽  
Karl S. Coyner
Keyword(s):  
Experimental Determination ◽  
Elastic Properties

A model of the tension and transmission efficiency of a bush roller chain

2001 ◽  
Vol 216 (4) ◽  
pp. 385-394 ◽  
Author(s):  
C J Lodge ◽  
S C Burgess
Keyword(s):  
Sliding Friction ◽  
Transmission Efficiency ◽  
Chain Drive ◽  
Roller Chain ◽  
Trade Offs ◽  
Chain Link ◽  
Low Torque ◽  
A Chain ◽  
The Right ◽  
Selection Of

This paper describes an improved chain link tension model for a simple two-sprocket roller chain drive. The model includes modified versions of previous models of the tension in the chain links, together with a new model for low-slack span tensions. The model allows the tension of a link to be calculated at any point in the chain drive more quickly and for a wider range of tight and slack span tensions than before. A new chain efficiency model is formulated, based on the losses due to sliding friction. Coupled with the chain link tension model, this can be used to predict the transmission efficiency of a chain. Experimental work undertaken on 0.5 in pitch industrial roller chains and bicycle chains has demonstrated that the chain efficiency model is accurate for moderate and high torque transmissions. At low torque, losses due to impact, adhesion and/or vibration become more significant and impair the accuracy of the model, particularly for heavier, industrial roller chains. The chain efficiency model enables certain design trade-offs to be carried out, such as the selection of the size of the overall system to achieve the right balance of transmission efficiency and weight.

Sign in / Sign up

Export Citation Format

Share Document