On The Dynamic Behaviour of Automobile Pulleys Under Cyclic Loading

2020 ◽  
Vol 6 (2) ◽  
Author(s):  
Haval Kamal Asker ◽  
Thaker Saleh Dawood
Keyword(s):  
Cyclic Loading ◽  
Dynamic Behaviour

Dynamic behaviour of weathered red mudstone in Sichuan (China) under triaxial cyclic loading

2018 ◽  
Vol 15 (8) ◽  
pp. 1789-1806 ◽  
Author(s):  
Chong-lei Zhang ◽  
Guan-lu Jiang ◽  
Li-jun Su ◽  
Wei-ming Liu
Keyword(s):  
Cyclic Loading ◽  
Dynamic Behaviour

scholarly journals Fatigue limit estimation using IR camera

2018 ◽  
Vol 157 ◽  
pp. 05021 ◽  
Author(s):  
Zuzana Stankovičová ◽  
Vladimír Dekýš ◽  
Milan Uhríčik ◽  
Pavol Novák ◽  
Bohumír Strnadel
Keyword(s):  
Cyclic Loading ◽  
Fatigue Limit ◽  
Infrared Thermography ◽  
Traditional Method ◽  
Dynamic Behaviour ◽  
Material Surface ◽  
Test Results ◽  
Ir Camera ◽  
Short Time

Determination of fatigue limit by traditional method is associated with testing of large number of specimens. This is caused by more scatter in test results and therefore a higher amount of tests are needed to generate a statistically reliable trend. The paper presents rapid and reliable estimation of fatigue limit using infrared thermography. By analysing the temperature of the material surface during cyclic loading it is possible to evaluate the dynamic behaviour of a structure and determine the fatigue limit. The method provides reliable results using a very little number of specimens in a very short time compared with traditional method.

Dynamic behaviours of reinforced concrete columns under cyclic loading with variable rates

2019 ◽  
Vol 23 (4) ◽  
pp. 779-793
Author(s):  
SY Xiao ◽  
JB Li ◽  
YL Mo
Keyword(s):  
Reinforced Concrete ◽  
Cyclic Loading ◽  
Dynamic Behaviour ◽  
Loading Rate ◽  
Deformation Behaviour ◽  
Concrete Columns ◽  
Dissipated Energy ◽  
Reinforced Concrete Columns ◽  
Hydraulic Servo ◽  
Strength And Deformation

The dynamic behaviour of reinforced concrete columns is inevitably affected by loading rate. This article reports the effect of loading rate on the dynamic behaviour of reinforced concrete columns under cyclic loading. Dynamic tests on reinforced concrete columns at five different loading rates were carried out using the MTS electro-hydraulic servo system. The cyclic loading was controlled by displacement with a loading rate ranging from 0.1 to 10 mm/s. Based on the test results, the effects of the loading rate on the hysteresis curves and the envelope curves of reinforced concrete columns were investigated. The research focused on the effect of loading rate on strength and deformation behaviour, including yielding and ultimate strengths as well as displacement. Finally, the effects of loading rate on the dissipated energy capabilities, the pinching effects and the stiffness degradation of reinforced concrete columns were also critically examined.

Seismic table investigation of the effect of inclusions on the cyclic behaviour of tailings

2012 ◽  
Vol 49 (4) ◽  
pp. 416-426 ◽  
Author(s):  
Nicolas Pépin ◽  
Michel Aubertin ◽  
Michael James
Keyword(s):  
Cyclic Loading ◽  
Dynamic Response ◽  
Laboratory Investigation ◽  
Experimental Work ◽  
Mine Tailings ◽  
Dynamic Behaviour ◽  
Hard Rock ◽  
Cyclic Behaviour ◽  
Tailings Impoundment

When subjected to cyclic loadings, such as those induced by earthquakes, hard rock mine tailings may undergo liquefaction. Such a response can be damaging to the tailings impoundment and, in the case of a breach, to the surroundings. Means must thus be considered to control or alleviate the risks due to liquefaction. This paper presents the main results of a laboratory investigation that focussed on the dynamic behaviour of tailings due to cyclic loading on a seismic table. Different conditions were investigated to assess the influence of various factors, including tailings density and the presence of rigid and (or) drainage inclusions. The main results obtained during the tests conducted on the tailings, with and without inclusions, are presented and discussed with an emphasis on the development of excess porewater pressures. The main limitations of this experimental work are also discussed. These results show that inclusions can have a significant effect on the dynamic response of the tailings and on the occurrence of liquefaction.

scholarly journals Full-scale model testing on the dynamic behaviour of weathered red mudstone subgrade under railway cyclic loading

2019 ◽  
Vol 59 (2) ◽  
pp. 296-315 ◽  
Author(s):  
Chonglei Zhang ◽  
Guanlu Jiang ◽  
Olivier Buzzi ◽  
Lijun Su
Keyword(s):  
Cyclic Loading ◽  
Dynamic Behaviour ◽  
Model Testing ◽  
Full Scale ◽  
Scale Model

The Impact of Cyclic Loading on the Flexural Strength of Ice

2021 ◽  
Author(s):  
Ihsan Kaplan ◽  
R. U. Franz von Bock und Polach
Keyword(s):  
Global Warming ◽  
Cyclic Loading ◽  
Flexural Strength ◽  
Dynamic Behaviour ◽  
Small Displacement ◽  
Polar Ice ◽  
Wave Interactions ◽  
Marginal Ice Zone ◽  
Wave Induced ◽  
The Impact

Abstract Flexural strength measurements of sea ice in far inlying regions can experience continuous cyclic loading due to wave interactions. Furthermore, global warming leads to a continuous decrease of the Polar ice masses, resulting in an increased vulnerability of the integrity of the ice and its exposure to wave interactions and in consequence a growth of the marginal ice zone. In order to investigate the impact of cyclic loading on the flexural strength of ice, experiments with periodically loaded and previously unloaded ice samples is performed and analyzed. Previous research indicated both a weakening and a strengthening of the ice and the scope of this paper is also to enhance the understanding of the impact of cyclic loading of ice. This is relevant as ice might be subjected to several loading cycles before wave induced break-up and the question is whether the impact of cyclic loading needs to be accounted for in models. of its impact is addressed. The results show that the flexural strength of periodically loaded samples increases instead of fatigueing. Furthermore the ice has a very dynamic behaviour even at very low loading frequencies and small displacement-amplitudes in the micrometre range.

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