Effects of material nonlinearity on load distribution in multi-bolt composite joints

2015 ◽  
Vol 125 ◽  
pp. 195-201 ◽  
Author(s):  
F. Taheri-Behrooz ◽  
A.R. Shamaei Kashani ◽  
R.N. Hefzabad
Keyword(s):  
Load Distribution ◽  
Material Nonlinearity ◽  
Composite Joints

Load Distribution in Two-Pinned Polymer Composite Joints

1991 ◽  
pp. 553-574 ◽  
Author(s):  
S. F. M. Abd-El-Naby ◽  
L. Hollaway ◽  
M. Gunn
Keyword(s):  
Polymer Composite ◽  
Load Distribution ◽  
Composite Joints

FE Modeling for Load Distribution Analysis of Multi-Bolt Composite Joints

2014 ◽  
Vol 551 ◽  
pp. 104-107
Author(s):  
Zhi Xiang Xu
Keyword(s):  
Load Distribution ◽  
High Reliability ◽  
Strength Analysis ◽  
Composite Joints ◽  
Distribution Analysis ◽  
Spring Model ◽  
3D Fem ◽  
Analysis And Design ◽  
Composite Joint ◽  
Load Carrying

Multi-bolt composite joints are widely used in the primary structures because of their advantages of high reliability, load carrying capability, and maintainability. Load distribution analyses, as the precondition of strength analysis and design of multi-bolt composite joints, have attracted extensive attention over decades. The conventional 2D FEM, new 2D FEM and 3D FEM were established to analyze the load distribution of a typical single-lap three-bolt composite joint. The effect of friction on the load distribution results of 3D FEM was investigated. Furthermore, the load distribution of the joint was examined by using a theoretical spring model and load distribution experiments. Based on the investigation of experimental and numerical results, the load distribution character of single-lap three-bolt composite joint was obtained, and the suitability of different FE models was verified.

Two Load Distribution Measurement Methods of Single-Lap Composite Joints

2014 ◽  
Vol 915-916 ◽  
pp. 377-380
Author(s):  
Zhi Xiang Xu
Keyword(s):  
Strain Gauge ◽  
Load Distribution ◽  
Load Transfer ◽  
Model Solution ◽  
Measurement Methods ◽  
Composite Joints ◽  
Spring Model ◽  
Distribution Measurement ◽  
Improved Methods

Load distribution is a precondition for strength predictions of multi-bolt composite joints and thus accurate load distribution measurement methods are required. Here two improved methods that strain gauge belts and improved instrumented fasteners are adopted to test the load distribution of single-lap three-bolt composite joints. Although the strain gauge belt can eliminate some errors induced by the manual mounting, it results in rather large errors relative to the theoretical spring model solution. In comparison with the strain gauge belt, the load transfer ratios obtained from improved instrumented fasteners are closer to the theoretical solutions and smaller errors can be obtained, which offers powerful evidence for the applicability of the improved instrumented fasteners to the load distribution measurement of single-lap multi-bolt composite joints.

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