Modelling of Honeycomb Sandwich Structure with Curved Edges and Performing Analysis Using Finite Element Method

2021 ◽  
Vol 5 (2) ◽  
Author(s):  
Pinnamaneni Sai Krishna ◽  
Patabendige Hasintha Hiran Amaranayaka Kariyakarawana ◽  
Beyle Andrey
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Sandwich Structure ◽  
Honeycomb Sandwich ◽  
Honeycomb Sandwich Structure ◽  
Element Method

Mechanical Properties Analysis on Honeycomb Sandwich Structure Considering Flexural Rigidity of Face Sheets

2013 ◽  
Vol 705 ◽  
pp. 216-222 ◽  
Author(s):  
Xing Xing He ◽  
Ying Liao ◽  
Xiao Jun Liang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Analytical Method ◽  
Sandwich Structure ◽  
Flexural Rigidity ◽  
Equivalent Model ◽  
Engineering Practice ◽  
Honeycomb Sandwich ◽  
Honeycomb Sandwich Structure ◽  
Element Method

Based on the honeycomb sandwich structure on the supported plates of a satellite antenna, the bending effect of the honeycomb sandwich structure is analyzed with analytical method and finite element method (FEM) to design and verify the models established in the paper. Then, the analytical method without/with considering the flexural rigidity effect of the face sheets is solved. And the equivalent model of the honeycomb sandwich structure is constructed for valuating analysis. Then the three different models are analyzed with finite element method. The results show that, the flexural rigidity of face sheets can affect the bending of the structure when the thickness cant be ignored. Compared to the reality model, the bending results of the equivalent model are more conservative. Its significant in the engineering practice for the honeycomb sandwich structures.

Modelling and analysis of honeycomb sandwich structure using finite element method

2020 ◽  
Vol 25 ◽  
pp. 620-625
Author(s):  
Shubham Upreti ◽  
Vishal K. Singh ◽  
Susheel K. Kamal ◽  
Arpit Jain ◽  
Anurag Dixit
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Sandwich Structure ◽  
Honeycomb Sandwich ◽  
Honeycomb Sandwich Structure ◽  
Element Method

scholarly journals Structural geometries and mechanical properties of vertebral implant with honeycomb sandwich structure for vertebral compression fractures: a finite element analysis

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Yuan Guo ◽  
Jing Liu ◽  
Xushu Zhang ◽  
Zejun Xing ◽  
Weiyi Chen ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Sandwich Structure ◽  
Sandwich Structures ◽  
Peak Stress ◽  
Axial Deformation ◽  
The Finite Element Method ◽  
Honeycomb Sandwich ◽  
Honeycomb Sandwich Structure ◽  
Anterior Posterior

Abstract Background Because of osteoporosis, traffic accidents, falling from high places, and other reasons, the vertebral body can be compressed and even collapse. Vertebral implants can be used for clinical treatment. Because of the advantages of honeycomb sandwich structures, such as low cost, less material, light weight, high strength, and good cushioning performance. In this paper, the honeycomb sandwich structure was used as the basic structure of vertebral implants. Methods The orthogonal experiment method is applied to analyse the size effect of honeycomb sandwich structures by the finite element method. Based on the minimum requirements of three indexes of peak stress, axial deformation, and anterior–posterior deformation, the optimal structure size was determined. Furthermore, through local optimization of the overall structure of the implant, a better honeycomb sandwich structure vertebral implant was designed. Results The optimal structure size combination was determined as a panel thickness of 1 mm, wall thickness if 0.49 mm, cell side length of 1 mm, and height of 6 mm. Through local optimization, the peak stress was further reduced, the overall stress distribution was uniform, and the deformation was reduced. The optimized peak stress decreased to 1.041 MPa, the axial deformation was 0.1110%, and the anterior–posterior deformation was 0.0145%. A vertebral implant with good mechanical performance was designed. Conclusions This paper is the first to investigate vertebral implants with honeycomb sandwich structures. The design and analysis of the vertebral implant with a honeycomb sandwich structure were processed by the finite element method. This research can provide a feasible way to analyse and design clinical implants based on biomechanical principles.

Design of a Mono-Leaf in Sandwich Structure for Application in Light-Load Vehicle Using Finite Element Method

2021 ◽  
Author(s):  
Leonardo do Carmo Lelis Dias ◽  
Erivaldo Pereira Nunes ◽  
Marcella Cristina Neves Alvarenga ◽  
Antônio Ferreira Ávila
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Sandwich Structure ◽  
Light Load ◽  
Element Method

CALCULATION OF DISPERSION CURVES FOR ARBITRARY WAVEGUIDES USING FINITE ELEMENT METHOD

2014 ◽  
Vol 06 (05) ◽  
pp. 1450059 ◽  
Author(s):  
KAIGE ZHU ◽  
DAINING FANG
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Guided Waves ◽  
Dispersion Curves ◽  
Guided Wave ◽  
Sandwich Plates ◽  
Multilayered Structures ◽  
Finite Element Software ◽  
Honeycomb Sandwich ◽  
Element Method

Dispersion curves for waveguide structures are an important prerequisite for the implementation of guided wave-based nondestructive evaluation (NDE) approach. Although many methods exist, each method is only applicable to a certain type of structures, and also requires complex programming. A Bloch theorem-based finite element method (FEM) is proposed to obtain dispersion curves for arbitrary waveguides using commercial finite element software in this paper Dispersion curves can be obtained for a variety of structures, such as homogeneous plates, multilayered structures, finite cross section rods and honeycomb sandwiches. The propagation of guided waves in honeycomb sandwich plates and beams are discussed in detail. Then, dispersion curves for honeycomb sandwich beams are verified by experiments.

Thermally induced microcracks and mechanical property of composite honeycomb sandwich structure: Experiment and finite element analysis

2018 ◽  
Vol 22 (8) ◽  
pp. 2544-2566 ◽  
Author(s):  
Sandesh Rathnavarma Hegde ◽  
Mehdi Hojjati
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Mechanical Strength ◽  
Sandwich Structure ◽  
Crack Density ◽  
Thermal Cycles ◽  
Element Analysis ◽  
Honeycomb Sandwich ◽  
Number Of Cycles ◽  
Honeycomb Sandwich Structure

Microcracking in composite honeycomb sandwich structure and its effect on mechanical properties are studied in this paper. A methodology is presented to study the extent of mechanical strength degradation of composite sandwich structure, subjected to thermal fatigue. The material under study is used for spacecraft structural applications. The test coupons were exposed to thermal cycling at elevated temperature as high as +150°C inside the oven and cryogenic temperature of −190°C by dipping in liquid nitrogen, which is comparable to the thermal environment experienced by spacecraft structures. After each thermal cycle, coupons were inspected for microcracks under an optical microscope at the cross section. The microcracks were then quantified using parameters like crack length and crack density with increase in the number of cycles. Flatwise tensile test was conducted on the coupons after every 10 thermal cycles, up to 60 cycles, to make a correlation between crack density and mechanical strength. It was observed that by increasing the number of thermal cycles, the crack density increases and the flatwise tensile strength decreases up to a specific number of cycles. Finite element analysis was performed to predict the possible location of microcracks formation and compared with experimental observation. Good correlation was observed.

DETERMINATION OF DELAMINATION SIZE IN HONEYCOMB SANDWICH PANEL USING FINITE ELEMENT METHOD

2015 ◽  
Vol 75 (8) ◽  
Author(s):  
Ramzyzan Ramly ◽  
Wahyu Kuntjoro ◽  
Wirachman Wisnoe ◽  
Rizal Effendy Mohd Nasir ◽  
Aman Mohd Ihsan Mamat ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Sandwich Panel ◽  
Bending Test ◽  
The Finite Element Method ◽  
Three Point Bending ◽  
Significant Difference ◽  
Honeycomb Sandwich ◽  
Element Method

This paper describes the determination of a relative delamination size of the skin to the honeycomb core of the honeycomb sandwich panel using the Finite Element Method approach. In the analysis, the honeycomb sandwich panel was modelled in the actual dimension using CATIA. The delamination of two different sizes (10 mm diameter and 30 mm diameter) were modelled to simulate the delamination cases. Using Nastran/Patran, the models underwent a three-point-bending test in order to simulate a result. The results were compared between the case of no delamination, 10 mm delamination, and 30 mm delamination. From the simulation, there was a significant difference of displacement of the skin (facing) between the 10 mm diameter delamination and the 30 mm diameter delamination.  

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