The following information was submitted:
Transactions: WSEAS TRANSACTIONS ON APPLIED AND THEORETICAL MECHANICS
Transactions ID Number: 32-397
Full Name: UMAR FAROOQ
Position: Ph.D. Candidate
Age: ON
Sex: Male
Address: Built Environment and Engineering Department, University of Bolton
Country: UNITED KINGDOM
Tel: 01204 903121
Tel prefix: 0044
Fax: 0044 1204 399074
E-mail address: adalzai3@yahoo.co.uk
Other E-mails: uf1res@bolton.ac.uk
Title of the Paper: triangular finite element simulation and failure prediction of carbon fibrous composite panels under drop weight impact
Authors as they appear in the Paper: Umar Farooq and Karl Gregory
Email addresses of all the authors: adalzai3@yahoo.co.uk, uf1res@bolton.ac.uk, k.r.gregory@bolton.ac.uk
Number of paper pages: 13
Abstract: Abstract:- Finite element computational model was developed to simulate impact behaviour and predict the failure response of carbon fibrous composite panels subjected to low velocity drop-weight impact. Mathematical formulations consisting of constitutive relation of fibrous composite laminates were introduced. Equations for drop weight phenomena were developed and failure criteria proposed by Hashin were also introduced. Triangular Finite Element Method (FEM) was chosen to perform simulation in commercially available software ABAQUS incorporating drop-weight velocity amplitudes in time-domain with various input parameters. To improve convergence, triangular element system along with adaptive meshing technique was employed to mesh the regions of high stress gradient with fine meshes and coarse meshes for the rest. Computed stresses were used in Hashin failure criteria and compared against ultimate stresses. Most of the results from the available literature and !
found to be in good agreement. However, as expected, some values of acceleration parameters were very large. As they were computed from second order derivates, divided by very small time step size produced such larger values. Therefore, a four-point moving average filter was applied to smooth 'noise' from the results. Some of the results from failure threshold loads were selected and included in the form of tables, contour plots and graphs.
Keywords: Finite element, Fibrous composites, Failure criteria, Adaptive meshing, Moving average.
EXTENSION of the file: .doc
Special (Invited) Session: wseas transactions on applied and theoretical mechanics
Organizer of the Session: Professor Olga Martin
How Did you learn about congress: University of Bolton , Library Eagle Mall Centre, Deane Road, Bolton. email: d.j.elliott@bolton.ac.uk
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