Delamination and First Ply Failure Study of Composite Conoidal Shells
Journal Title: Bonfring International Journal of Industrial Engineering and Management Science - Year 2012, Vol 2, Issue 4
Abstract
Interlaminar and intralaminar failure modes of composite conoidal shells are investigated in this paper using finite element as the mathematical tool. One of the prerequisites for confidently applying the composite shells in practical civil engineering is to have a comprehensive idea about the shell behavior under different loading conditions. The static bending and free vibration responses of laminated composite conoidal shells are now well known as a good number of technical papers have been published by different researchers. But for these materials which are weak in transverse shear failure may initiate at any inner lamina or interface and may remain undetected and unattended. Such latent damages may progress gradually and lead to a sudden total ply failure. Due to fabrication problems or overloading, delamination defect may occur and remain hidden within the lamina. Hence it is imperative to have knowledge of the first ply failure load and the load at which delamination initiates. To explore this area, in this paper, a simply supported shell is considered loaded by concentrated load. Lamination and the load position are varied to investigate the first ply failure characteristics of the composite shell. Well accepted failure theories like maximum stress, Hoffman, Tsai-Wu and Tsai-Hill are used in the current formulation to obtain failure loads. While obtaining the failure loads, each lamina is considered to be under plane stress condition i.e. no transverse stresses are considered to act on any lamina. Comparison of failure loads obtained from both the failure modes are also presented to get the minimum failure load which will govern the shell design.
Authors and Affiliations
Kaustav Bakshi , Dipankar Chakravorty
Keywords
Related Articles
- EP ID EP87261
- DOI 10.9756/BIJIEMS.1658
- Views 169
- Downloads 0
Heart Disease Prediction Using Integer-Coded Genetic Algorithm (ICGA) Based Particle Clonal Neural Network (ICGA-PCNN)
Nowadays, cardiovascular diseases are known as the one of the most dangerous and common problems in modern society. Analyzing and classifying the ECG signal will yield an accurate detection of different arrhythmias. Henc...
FEM Analysis of Effect of Rolling Parameters on Cold Rolling Process
A FEM simulation study was carried out to investigate the influence of the rolling parameters on the rolling process. Using commercial FEM software, ABAQUS, a number of cases were studied. In this paper, a two-dimensiona...
Emerging Dimension in Management (Finance) - Corporate Debt Refinancing
Corporate Debt Refinancing (CDR) is a new and emerging concept in finance. The article help to learn more about debt refinancing, the survey made with European markets from Borrower and Lender on growth of debt for 3 yea...
Assessing Adequacy of a Probability Distribution for Estimation of Design Flood
Estimation of design flood for a desired return period is of prime importance for safe design of hydraulic structures such as dams, spillways, bridges, culverts, urban drainage systems and flood plain zoning. Frequency a...
DPIRS Framework for Sustainable Development of Coastal Areas
Presently 21% of the world population lives within 30 kms of the coastal areas. Coastal zones are therefore of great importance as zones of settlement and play a vital role in the economic well-being of many nations. Ind...