scholarly journals Finite Element Analysis of Steel Columns Subjected to Bi-directional Cyclic Loads

2007 ◽  
Vol 40 (4) ◽  
pp. 35
Author(s):  
K. A. S. Susantha ◽  
T. Aoki ◽  
M. T. R. Jayasinghe
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Cyclic Loads ◽  
Element Analysis ◽  
Steel Columns

Probing the Instability of a Cluster of Slip Bonds Upon Cyclic Loads With a Coupled Finite Element Analysis and Monte Carlo Method

2014 ◽  
Vol 81 (11) ◽  
Author(s):  
Xiaofeng Chen ◽  
Bin Chen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Monte Carlo ◽  
Monte Carlo Method ◽  
Failure Modes ◽  
Underlying Mechanism ◽  
Cyclic Stretch ◽  
Cyclic Loads ◽  
Element Analysis ◽  
The Stability

Cells are subjected to cyclic loads under physiological conditions, which regulate cellular structures and functions. Recently, it was demonstrated that cells on substrates reoriented nearly perpendicular to the stretch direction in response to uni-axial cyclic stretches. Though various theories were proposed to explain this observation, the underlying mechanism, especially at the molecular level, is still elusive. To provide insights into this intriguing observation, we employ a coupled finite element analysis (FEA) and Monte Carlo method to investigate the stability of a cluster of slip bonds upon cyclic loads. Our simulation results indicate that the cluster can become unstable upon cyclic loads and there exist two characteristic failure modes: gradual sliding with a relatively long lifetime versus catastrophic failure with a relatively short lifetime. We also find that the lifetime of the bond cluster, in many cases, decreases with increasing stretch amplitude and also decreases with increasing cyclic frequency, which appears to saturate at high cyclic frequencies. These results are consistent with the experimental reports. This work suggests the possible role of slip bonds in cellular reorientation upon cyclic stretch.

Model tests and finite element analysis for vertically loaded anchors subjected to cyclic loads in soft clays

2020 ◽  
Vol 119 ◽  
pp. 103317
Author(s):  
Xinglei Cheng ◽  
Yifeng Li ◽  
Piguang Wang ◽  
Zhongxian Liu ◽  
Yadong Zhou
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Model Tests ◽  
Cyclic Loads ◽  
Element Analysis ◽  
Soft Clays

Non-Loosening Performance of Plastically Pre-Deformed Nuts Under Cyclic Loads

2012 ◽  
Author(s):  
Yasumasa Shoji ◽  
Susumu Kumakura ◽  
Toshiyuki Sawa
Keyword(s):  
Finite Element Analysis ◽  
Plastic Deformation ◽  
Finite Element ◽  
Pressure Vessels ◽  
Cyclic Loads ◽  
Significant Issue ◽  
Research Activity ◽  
Research Papers ◽  
Element Analysis ◽  
Long Time

Self-loosening of bolts and nuts is a significant issue for bolted fasteners. In recent years, this problem has been a hot topic in the field of pressure vessels and piping. Several research papers have been presented from several institutes and the mechanism and phenomena have been almost understood. This paper offers a countermeasure based on the authors’ long time research activity on the non-loosening performance of various types of nuts. Their research has indicated that prescribed plastic deformation of nut heads may prevent or decrease loosening. This phenomenon was reproduced using Finite Element Analysis.

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