Parametric study on the buckling load after micro-bolt repair of a composite laminate with delamination

2019 ◽  
Vol 215 ◽  
pp. 1-12 ◽  
Author(s):  
Gyu-Seok Kang ◽  
Byeong-Su Kwak ◽  
Hyeon-Seok Choe ◽  
Jin-Hwe Kweon
Keyword(s):  
Parametric Study ◽  
Composite Laminate ◽  
Buckling Load

Multifunctional Composite Structures With Integrated Damping Treatments: A Parametric Study

2010 ◽  
Author(s):  
Gre´goire Lepoittevin ◽  
Markus Zogg ◽  
Paolo Ermanni
Keyword(s):  
Composite Structure ◽  
Parametric Study ◽  
Composite Structures ◽  
Composite Laminate ◽  
Vibration Damping ◽  
Design Parameters ◽  
Viscoelastic Core ◽  
Mechanical Performances ◽  
Damping Treatments ◽  
The Impact

A parametric study on composite laminate plates with integrated damping treatment is realized. The goal is to assess the impact of a viscoelastic core on the mechanical performances as well as on the vibration damping efficiency. This work considers as design parameters the damping layer thickness and its position in the laminate lay-up. The obtained results enable to propose a guideline for multifunctional composite structure with intergrated damping treatment.

Parametric Study of Specific Buckling Load of Cylindrical Grid Stiffened Composite Shells

2012 ◽  
Vol 13 (1) ◽  
pp. 482-485 ◽  
Author(s):  
Hamid Shahsavari Alavijeh ◽  
Soroush Sadeghnejad ◽  
Mojtaba Sadighi
Keyword(s):  
Parametric Study ◽  
Buckling Load ◽  
Composite Shells ◽  
Cylindrical Grid

Critical buckling load of composite laminates containing delamination using differential quadrature method and ABAQUS finite element

2021 ◽  
pp. 030932472199657
Author(s):  
Hamed Edalati ◽  
Vahid Daghigh ◽  
Kamran Nikbin
Keyword(s):  
Finite Element ◽  
Composite Laminates ◽  
Composite Laminate ◽  
Differential Quadrature Method ◽  
Compressive Load ◽  
Differential Quadrature ◽  
Buckling Load ◽  
Quadrature Method ◽  
Critical Buckling Load ◽  
Finite Element Package

Differential quadrature method (DQM) was used to compute the critical buckling load (CBL) of composite laminates containing complex delamination shapes. The composite laminate was initially flat; however, it buckled under a compressive load due to weak adhesive between the outer ply and the whole composite laminate. Previous data obtained for composite laminates containing circular or elliptical delaminations by finite element and the Rayleigh-Ritz methods as well as DQM available in the literature were used to validate the accuracy of the approach. A good agreement between the results was observed. To show the ability of this approach for calculating the CBL of a composite laminate containing complex delamination shape, a crescent-shaped delamination was considered. The CBLs for various stacking sequences of such a composite laminate were then calculated and discussed. The commercial finite element package, ABAQUS was used to validate the DQM results for crescent delamination.

scholarly journals Linear Buckling Behaviour of Composite Laminate [(Θ/-Θ)] with Various Shaped Cutout using Fem

2019 ◽  
Vol 9 (1S4) ◽  
pp. 18-22
Keyword(s):  
Uniaxial Compression ◽  
Composite Laminates ◽  
Composite Laminate ◽  
Buckling Load ◽  
Laminated Plate ◽  
Vertical Rectangle ◽  
Buckling Behavior ◽  
Linear Buckling ◽  
Polyester Composite ◽  
Layer Orientation

In this paper, the buckling behavior has been investigated on square laminate made of Woven-glass-polyester composite with various shaped cutouts (i.e., circle, square, vertical rectangle, horizontal rectangle, vertical ellipse, horizontal ellipse) numerically. The composite laminates have been arranged in asymmetrical order as [(θ/-θ)]. The laminated plate that is subjected to uniaxial compression has been emphasized on the laminate along with the effect of layer orientation, effect of cutout ratio and effect of cutout angle. The result shows that the minimum buckling load is obtained at 45° and the maximum buckling load attained at 0° and 90°for all laminates by increasing the layer orientation. For cutout ratio, the maximum and minimum load is obtained for the smallest and largest cutout ratio in all cutout shapes. Increasing the cutout angle, the square cutout exhibits the minimum load at 60°. In elliptical cutouts, the load is decreasing and increasing gradually while they are aligned in along and perpendicular to the loading directions. The rectangular cutouts positioned vertically and horizontally the load is decreasing up to 30° and 60°and then increasing up to 90°.

Parametric Study of Photovoltaic Thermal Solar Collector Using An Improved Parallel Flow

2020 ◽  
Vol 2 (1) ◽  
pp. 19-24
Author(s):  
Sakhr Mohammed Sultan ◽  
Chih Ping Tso ◽  
Ervina Efzan Mohd Noor ◽  
Fadhel Mustafa Ibrahim ◽  
Saqaff Ahmed Alkaff
Keyword(s):  
Thermal Conductivity ◽  
Energy Balance ◽  
Parametric Study ◽  
Solar Collector ◽  
Parallel Flow ◽  
Operating Conditions ◽  
Balance Equations ◽  
Conductivity Type ◽  
Pv Module ◽  
Sunny Weather

Photovoltaic Thermal Solar Collector (PVT) is a hybrid technology used to produce electricity and heat simultaneously. Current enhancements in PVT are to increase the electrical and thermal efficiencies. Many PVT factors such as type of absorber, thermal conductivity, type of PV module and operating conditions are important parameters that can control the PVT performance. In this paper, an analytical model, using energy balance equations, is studied for PVT with an improved parallel flow absorber. The performance is calculated for a typical sunny weather in Malaysia. It was found that the maximum electrical and thermal efficiencies are 12.9 % and 62.6 %, respectively. The maximum outlet water temperature is 59 oC.

Design of Variable Stiffness Cylinder with Holes Under Bending for Maximum Buckling Load Using Lamination Parameters

2019 ◽  
Author(s):  
Mazen Albazzan ◽  
Brian Tatting ◽  
Ramy Harik ◽  
Zafer Gürdal ◽  
Adriana Blom-Schieber ◽  
...  
Keyword(s):  
Variable Stiffness ◽  
Buckling Load ◽  
Lamination Parameters
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