scholarly journals VIBRATION ANALYSIS OF SINGLE LAP JOINT OF COMPOSITE PLATES BASED ON VARIATIONS OF PLATE THICKNESS AND OVERLAP LENGTH

2021 ◽  
Vol 2 (2) ◽  
pp. 19
Author(s):  
Bobby Yusuf Haka ◽  
Mas Irfan P Hidayat ◽  
Widyastuti Widyastuti
Keyword(s):  
Vibration Analysis ◽  
Plate Thickness ◽  
Composite Plates ◽  
Lap Joint ◽  
Single Lap Joint

A NEW TRIANGULAR ELEMENT BASED ON HIGHER ORDER SHEAR DEFORMATION THEORY FOR FLEXURAL VIBRATION OF COMPOSITE PLATES

2002 ◽  
Vol 02 (02) ◽  
pp. 163-184 ◽  
Author(s):  
A. CHAKRABARTI ◽  
A. H. SHEIKH
Keyword(s):  
Shear Deformation ◽  
Vibration Analysis ◽  
Deformation Theory ◽  
Plate Theory ◽  
Plate Thickness ◽  
Shear Deformation Theory ◽  
Free Vibration Analysis ◽  
Composite Plates ◽  
Higher Order ◽  
Triangular Element

A triangular element based on Reddy's higher order shear deformation theory is developed for free vibration analysis of composite plates. In the Reddy's plate theory, the transverse shear stress varies in a parabolic manner across the plate thickness and vanishes at the top and bottom surfaces of the plate. Moreover, it does not involve any additional unknowns. Thus the plate theory is quite simple and elegant. Unfortunately, such an attractive plate theory cannot be exploited as expected in finite element analysis, primarily due to the difficulties in satisfying the inter-element continuity requirement. This has inspired us to develop the present element, which has three corner nodes and three mid-side nodes with the same number of degrees of freedom. To demonstrate the performance of the element, numerical examples of isotropic and composite plates under different situations are solved. The results are compared with the analytical solutions and other published results, which show the accuracy and range of applicability of the proposed element in the problem of vibration analysis.

Free Vibration Analysis and Design of an Adhesively Bonded Composite Single Lap Joint

2007 ◽  
Author(s):  
M. Kemal Apalak ◽  
Recep Ekici ◽  
Mustafa Yildirim
Keyword(s):  
Fiber Volume Fraction ◽  
Natural Frequencies ◽  
Volume Fraction ◽  
Plate Thickness ◽  
Mode Shapes ◽  
Lap Joint ◽  
Adhesively Bonded ◽  
Fiber Volume ◽  
Fiber Angle ◽  
Single Lap Joint

In this study the three dimensional vibration analysis of an adhesively bonded cantilevered composite single lap joint was carried out. The first four bending natural frequencies and mode shapes were considered. The back-propagation Artificial Neural Network (ANN) method was used to determine the effects of the fiber angle, fiber volume fraction, overlap length and plate thickness on the bending natural frequencies and the mode shapes of the adhesive joint. The bending natural frequencies and modal strain energies of the composite adhesive lap joint were calculated using the finite element method for random values of the fiber angle, the fiber volume fraction, the overlap length and the plate thickness. Later, the proposed neural network models were trained and tested with the training and testing data. The fiber angle was more dominant parameter than the fiber volume fraction on the natural bending frequencies and corresponding bending mode shapes, and the plate thickness and the overlap length were also important geometrical design parameters whereas the adhesive thickness had a minor effect. In addition, the present ANN models were combined with Genetic Algorithm to search a joint design satisfying maximum natural frequency and minimum modal strain energy conditions for each natural bending frequency and mode shape.

STRESS DISTRIBUTION OF SECONDARY BENDING IN SINGLE-LAP BOLTED JOINTS WITH DISSIMILAR JOINING PLATES AND PLATE TYPES

2016 ◽  
Vol 78 (5-5) ◽  
Author(s):  
Hilton Ahmad
Keyword(s):  
Fuel Efficiency ◽  
Plate Thickness ◽  
Stress Gradient ◽  
Lap Joints ◽  
Lap Joint ◽  
Single Lap Joints ◽  
Single Lap Joint ◽  
Joint Construction ◽  
Composite Joint ◽  
Composite Steel

Single-lap joints are an important class of bolted joint in the aerospace and civil engineering sectors. This type of joint is preferred as it can reduce weight and hence help to optimize fuel efficiency. However, bolted single-lap joints exhibit secondary bending due to eccentricity of the applied loads. Flexural of plates during tensile loading alters the contact regions in the single-lap joint significantly, resulting in more non-linear behaviour and a stress gradient across the plate thickness. 3-D bolted single-lap joint were modelled in ABAQUS CAE incorporating the effect of the bolt tension from application of a tightening torque. Current 3-D model used elastic properties based on smeared-out properties, the effect of joint construction is considered further by examining the stress in a composite-composite joint and comparing with a composite-steel joint. In a related investigation the effect of varying composite thickness in the composite-steel joints is also studied.  

Kekuatan Sambungan AL/CFRP Menggunakan Adhesif Epoksi/Serbuk-AL dengan Variasi Pressure Level

2017 ◽  
Vol 1 (1) ◽  
Author(s):  
Bi Asngali
Keyword(s):  
Pressure Level ◽  
Lap Joint ◽  
Single Lap Joint ◽  
Al 2024

 Penelitian ini bertujuan untuk menyelidiki pengaruh pressure level terhadap kekuatan geser sambungan single lap joint (SLJ) antara Al 2024 dan CFRP dengan adesif epoksi/serbuk Al. Variasi pressure level yang digunakan adalah 0,6; 0,7; 0,8; 0,9 dan 1 MPa. Pembuatan dan pengujian spesimen uji geser mengacu pada ASTM D 1002. Hasil penelitian menunjukkan bahwa pressure level dapat meningkatkan kekuatan geser sambungan. Pada variabel pressure level terbaiknya yaitu 0,9 MPa menghasilkan kekuatan geser tertinggi (8,59 MPa). Pada kondisi tersebut, penampang patahan menunjukkan jenis kegagalan kombinasi antara kegagalan cohesive, light fiber tear dan fiber-tear.Kata kunci— pressure level; epoksi/serbuk-Al; kekuatan geser; single lap joint .

Experimental and FEA Evaluation of Hybrid Joint Strength of Single Lap joint

2011 ◽  
Vol 1 (9) ◽  
pp. 93-96
Author(s):  
S. S. Kadam S. S. Kadam ◽  
◽  
P. A. Dixit P. A. Dixit
Keyword(s):  
Joint Strength ◽  
Lap Joint ◽  
Single Lap Joint ◽  
Hybrid Joint
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