Fabrication, Analysis and Testing of Smart Adaptive Composite Beams

2018 ◽  
Vol 10 (5) ◽  
Author(s):  
Basavaraj Noolvi ◽  
Shanmukha Nagaraj ◽  
S. Raja
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Free Vibration ◽  
Composite Beams ◽  
Smart Composite ◽  
Dynamic Tests ◽  
Element Analysis ◽  
Static And Dynamic Tests ◽  
Adaptive Composite ◽  
Good Agreement

The presented research involves two types of Smart adaptive composite beams (SAC). The study was conducted on smart composite beams composed of LY5210 and EPOLAM 2063 resin systems respectively. The fabrication of composite beams involved embedding SMA wires in between layers of 0/90 woven glass fibre in the respective resin systems, followed by suitable curing and post curing cycles. Suitable mould was designed and manufactured to facilitate the required pre-straining of SMA wires. Both static and dynamic tests were done on the SAC specimens to study the behaviour of these SACs. Static and free vibration analyses were carried out using MSC Nastran and Hypermesh. There has been good agreement between the results of finite element analysis and the experimental results.

Finite element analysis of free vibration and wave propagation in asymmetric composite beams with structural discontinuities

2002 ◽  
Vol 55 (1) ◽  
pp. 23-36 ◽  
Author(s):  
A. Chakraborty ◽  
D. Roy Mahapatra ◽  
S. Gopalakrishnan
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Wave Propagation ◽  
Free Vibration ◽  
Composite Beams ◽  
Element Analysis

Burst Pressure of Pressurized Cylinders With Hillside Nozzle

2009 ◽  
Vol 131 (4) ◽  
Author(s):  
H. F. Wang ◽  
Z. F. Sang ◽  
L. P. Xue ◽  
G. E. O. Widera
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Experimental Models ◽  
Burst Pressure ◽  
Element Analysis ◽  
Test Models ◽  
Scale Test ◽  
Failure Location ◽  
Dimensional Instability ◽  
Good Agreement

The burst pressure of cylinders with hillside nozzle is determined using both experimental and finite element analysis (FEA) approaches. Three full-scale test models with different angles of the hillside nozzle were designed and fabricated specifically for a hydrostatic test in which the cylinders were pressurized with water. 3D static nonlinear finite element simulations of the experimental models were performed to obtain the burst pressures. The burst pressure is defined as the internal pressure for which the structure approaches dimensional instability, i.e., unbounded strain for a small increment in pressure. Good agreement between the predicted and measured burst pressures shows that elastic-plastic finite element analysis is a viable option to estimate the burst pressure of the cylinders with hillside nozzles. The preliminary results also suggest that the failure location is near the longitudinal plane of the cylinder-nozzle intersection and that the burst pressure increases slightly with an increment in the angle of the hillside nozzle.

Finite element analysis and parametric study of continuous steel–concrete composite beams stiffened with post-tensioned tendons

2017 ◽  
Vol 21 (6) ◽  
pp. 933-945 ◽  
Author(s):  
Ayman El-Zohairy ◽  
Hani Salim ◽  
Hesham Shaaban ◽  
Suzan Mustafa ◽  
Ashraf El-Shihy
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Parametric Study ◽  
Composite Beams ◽  
Continuous Steel ◽  
Element Analysis ◽  
Post Tensioned

Identification of a Significantly Non-Proportionally Damped Structure Using Force Appropriation

1995 ◽  
Author(s):  
P. S. Holmes ◽  
J. R. Wright ◽  
J. E. Cooper
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Normal Mode ◽  
Normal Modes ◽  
Dynamic Tests ◽  
High Quality ◽  
Element Analysis ◽  
Standard Curve ◽  
Complex Modes ◽  
Phase Resonance

Abstract Dynamic tests were carried out on an aluminium plate with significant non-proportional damping applied via two oil filled dampers. Normal mode force appropriation (phase resonance) methods were used to measure the undamped normal modes of the plate and the results compared with corresponding complex modes obtained using a standard curve fitting (phase separation) approach. It is demonstrated that, as long as suitable excitation positions are chosen, high quality undamped normal modes can be identified while the curve fitted modes are highly complex. A Finite Element analysis of the plate was used to show how the results of normal mode force appropriation are directly comparable, particularly when damping is non-proportional.

Finite element analysis of free vibration of delaminated composite plates

1995 ◽  
Vol 5 (2) ◽  
pp. 195-209 ◽  
Author(s):  
F. Ju ◽  
H.P. Lee ◽  
K.H. Lee
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Free Vibration ◽  
Composite Plates ◽  
Element Analysis
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