Flexural Behavior of Sandwich Structure with AA 8011 Honeycomb Core and Al 1100 Face Skins

2018 ◽  
Vol 10 (6) ◽  
Author(s):  
M.R. Ashok ◽  
M. Manojkumar ◽  
P.V. Inbanaathan ◽  
R. Shanmuga Prakash
Keyword(s):  
Finite Element Analysis ◽  
Sandwich Structure ◽  
Flexural Behavior ◽  
Bending Test ◽  
Honeycomb Core ◽  
Element Analysis ◽  
Three Point Bending ◽  
The Core ◽  
Flexural Testing ◽  
The Face

This paper details the fabrication and flexural testing of sandwich structure with Aluminium honeycomb core with Aluminium face skins. The material for the face skin is aluminium 1100 and for the core is Aluminium AA8011. The cell size obtained by fabrication is 7mm. The specimen is prepared and tested as per the ASTM standard C393/C393M-11 on a three-point bending test to obtain the ultimate core shear strength and the face skin strength. Finite element analysis is also carried out to validate the experimental test.

Comparison of Flexural Behaviour of Composite FRP with UHPC I-Beam Using Finite Element Analysis

2021 ◽  
Vol 1042 ◽  
pp. 151-156
Author(s):  
Siti Shahirah Saidin ◽  
Adiza Jamadin ◽  
Sakhiah Abdul Kudus ◽  
Norliyati Mohd Amin
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Construction Materials ◽  
Flexural Behavior ◽  
Advanced Materials ◽  
Bending Test ◽  
Fiber Reinforced Polymers ◽  
Experimental Result ◽  
Beam Model ◽  
Element Analysis

Concrete can be considered as the ultimate construction material since it is the most widely used in the construction materials due to its extensive strength and reasonable cost. Recent years, large investments have been spent for studies on the new advanced materials to enhance the performance and functionality of conventional concrete especially for bridge structure. The application of Ultra-high-performance concrete (UHPC) as advanced materials in bridge application is well established since it able to construct 100m long highway bridge without reinforcement, while fiber reinforced polymers (FRP) required some studies on the optimum composition for bridge application. In this paper, A33 composite FRP from the previous research is studied under 4-point bending test to study the flexural behavior and compared to the UHPC. Three-dimensional finite element analysis of FRP and UHPC I-beam are modelled using Abaqus software to determine and compare the beam deflection and stress. The deflection and stress UHPC and FRP I-beam model being validated with experimental result of four-point bending test and theoretical of equivalent method in previous research. The results from the analytical and experimental are compared and shows good agreements. The presented modeling offers an economical and efficient tool to investigate the structural performance of FRP and UHPC in construction materials.

Investigation of sandwich composite failure under three-point bending: Simulation and experimental validation

2018 ◽  
Vol 22 (6) ◽  
pp. 1838-1858 ◽  
Author(s):  
Sudharshan Anandan ◽  
Gurjot Dhaliwal ◽  
Shouvik Ganguly ◽  
K Chandrashekhara
Keyword(s):  
Numerical Model ◽  
Sandwich Structure ◽  
Experimental Validation ◽  
Bending Test ◽  
Core Material ◽  
Scale Model ◽  
Honeycomb Core ◽  
Three Point Bending ◽  
Failure Initiation ◽  
Meso Scale

A sandwich structure consists of a two thin and strong facesheets, bonded to a thick lightweight core material. The mechanical response of a sandwich structure depends on the properties of its constituents. A numerical model and experimental validation of the three-point bending test of sandwich composites are presented in this study. The core material is aluminum honeycomb. The facesheets are made of IM7/Cycom5320-1, which is a carbon fiber/epoxy prepreg system. A comprehensive model of the failure under flexural loading was developed. Facesheet failure was modeled using Hashin’s failure criteria. A detailed meso-scale model of the honeycomb core was included in the model. The experiments indicated that failure initiation was due to local buckling in the honeycomb core. Failure propagation was in the form of core failure, facesheet compressive failure, and interlaminar failure. The developed meso-scale model was able to accurately simulate failure initiation and propagation in the composite sandwich structure. The effect of elevated temperature on the three-point bending behavior was studied numerically as well as experimentally. An increase in test temperature to 100°C resulted in a drop of 9.2% in flexural strength, which was also predicted by the numerical model.

scholarly journals Analytical Model for Deflections of Bonded Posttensioned Concrete Slabs

2017 ◽  
Vol 2017 ◽  
pp. 1-7
Author(s):  
Min Sook Kim ◽  
Joowon Kang ◽  
Young Hak Lee
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Element Model ◽  
Flexural Behavior ◽  
Concrete Slabs ◽  
Element Analysis ◽  
Shell Elements ◽  
Flexural Testing ◽  
Posttensioned Concrete ◽  
Different Types

This paper presents a finite element analysis approach to evaluate the flexural behavior of posttensioned two-way slabs depending on the tendon layout. A finite element model was established based on layered and degenerated shell elements. Nonlinearities of the materials are considered using the stress-strain relationships for concrete, reinforcing steel, and prestressing tendons. Flexural testing of the posttensioned two-way slabs was conducted to validate the developed analytical process. Comparing the analytical results with the experimental results in terms of deflections, it showed generally good agreements. Also a parametric study was performed to investigate the effects of different types of tendon layout.

Effects of Core Height, Cell Angle and Face Thickness on Vibration Behavior of Aircraft Sandwich Structure with Honeycomb Core: An Experimental and Numerical Investigations

2021 ◽  
Vol 1039 ◽  
pp. 65-85
Author(s):  
Muhsin Jaber Jweeg ◽  
S.H. Bakhy ◽  
S.E. Sadiq
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Natural Frequency ◽  
Sandwich Structure ◽  
Damping Ratio ◽  
Design Parameters ◽  
Honeycomb Core ◽  
Element Analysis ◽  
Vibration Behavior ◽  
Core Height

The aim of the present paper is to study the vibration behavior of a sandwich structure with honeycomb core experimentally and numerically with different design parameters. The natural frequency and damping ratio were obtained. Core height, cell angle and face thickness were considered as design parameters. Finite element models for the honeycomb sandwich were developed and analyzed via ANSYS finite element analysis (FEA) software. Response Surface Method (RSM) is used to establish numerical methodology to simulate the effect of the design parameters on natural frequency and damping ration. The employment of (RSM) provides a study of the effect of design parameters on natural frequency and damping ratio, numerical modeling of them in term of design parameters and specifying optimization condition. The experimental tests were conducted on sandwich specimens for the validity goal of the previous models created via the finite element analysis. The obtained results show that the natural frequency is directly proportional to the core height and face thickness, while it is inversely proportional to cell angle, Vice versa for damping ratio. Moreover, the optimum value of natural frequency (209.031 Hz) as minimum and damping ratio (0.0320) as maximum were found at 4.8855 mm of core height, 26.770 cell angle and 0.0614 mm face thickness.

Effect of Strain-Rate on Flexural Behavior of Composite Sandwich Panel

2012 ◽  
Vol 229-231 ◽  
pp. 766-770 ◽  
Author(s):  
Behzad Abdi ◽  
S.S.R. Koloor ◽  
M.R. Abdullah ◽  
Ayob Amran ◽  
Mohd Yazid bin Yahya
Keyword(s):  
Strain Rate ◽  
High Performance ◽  
Sandwich Panel ◽  
Flexural Behavior ◽  
Bending Test ◽  
Complex Deformation ◽  
Three Point Bending ◽  
Composite Sandwich ◽  
The Core ◽  
Important Concern

In the past few decades, Composite Sandwich Panel (CSP) technology significantly influenced the design and manufacturing of high performance structures. Although using CSP increases the reliability of structure, the important concern is to understand the complex deformation and damage evolution process. This study is focused on the mechanical behaviour of CSP under flexural loading condition. A setup of three-point bending test is prepared using three support span of 40, 60 and 80 mm. The loading was controlled by three different displacement rates of 1, 10 and 100 mm per minute to examine the effects of strain-rate on bending behaviour of CSP material. The beam span significantly affects the flexural stiffness of CSP panel. The load-deflection response of the panel shows two different portions, that representing equivalent elastic and plastic regions in both the core and facesheets components of CSP. The non-combustible mineral-filled core appears to be nonlinear in the elastic region, at high loading rate. Consequently the failure occurs as the core/facesheets interface suffers debonding.

Influence of Honeycomb Core Compression on the Mechanical Properties of the Sandwich Structure

2013 ◽  
Vol 486 ◽  
pp. 283-288
Author(s):  
Ladislav Fojtl ◽  
Soňa Rusnáková ◽  
Milan Žaludek
Keyword(s):  
Mechanical Properties ◽  
Impact Test ◽  
Charpy Impact ◽  
Charpy Impact Test ◽  
Low Velocity Impact ◽  
Bending Test ◽  
Honeycomb Core ◽  
Low Velocity ◽  
Three Point Bending ◽  
Core Technology

This research paper deals with an investigation of the influence of honeycomb core compression on the mechanical properties of sandwich structures. These structures consist of prepreg facing layers and two different material types of honeycomb and are produced by modified compression molding called Crush-Core technology. Produced structures are mechanically tested in three-point bending test and subjected to low-velocity impact and Charpy impact test.

Sign in / Sign up

Export Citation Format

Share Document