Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : finite element


Sphrical Slab with Ferrocement

a A. Mohammed; Shayma

Engineering and Technology Journal, 2011, Volume 29, Issue 13, Pages 2609-2616

This research is devoted to investigate the behavior of spherical ferrocement slabs under flexural loading. The main parameters considered in the analysis are the thickness of the slab, vertical and horizontal diameters, and the effect of number of wire mesh layers on the behavior of spherical. Analysis was done using the finite element software ANSYS V. 11, which is used for solving several problems of structural engineering. The 8-node iso-parametric brick elements in ANSYS are used to represent the mortar, the wire mesh layers are
considered as smeared layers elastic-perfectly plastic materials embedded within the
brick elements by assuming perfect bond between the mortar and steel.
An improvement was indicated in the behavior of the elements when changing the shape of the slab from straight to spherical slabs found in deflection about 64% (as indicated in ref. [1]). As well as increasing number of wire mesh layers from two to four and from two to six tend to increase the load capacity by 18% and 28% respectively.
The increase in the thickness and the vertical diameter cause decrease in deflection to 20% and 10% alternately.

A Study of Optimum Blank Shape for Square Cup Drawing Using Finite Element Method

Harith Yarub Mann; Shakir Madhlwm Katee

Engineering and Technology Journal, 2011, Volume 29, Issue 13, Pages 2637-2647

The aim of this study is to determine the optimal blank shape for a square cup drawing with uniform flange (square and circular flange).A new algorithm is proposed to control of flange shape based on shape error. To reduce earing defects on boundary of deformed flange, the initial blank shape was iteratively modified. This modification is repeated until an optimal blank shape for the part is achieved. To
apply this algorithm, 3D model of deep drawing was used and analyzed by Ansys 11.0 FEM code. Low carbon steel was chosen to carryout the simulation. The results show that the shape of optimum blank has significantly reduced the earing defects in few iterations
by using this algorithm.

Combined Effect ofWheel and Thermal Load Conditions on Stress Distribution in Flexible Pavement

Zainab Ahmed Alkaiss; Suham E. Saleh Al-maliky

Engineering and Technology Journal, 2009, Volume 27, Issue 12, Pages 2257-2267

The aim of this research is to study the behavior of flexible pavement under
wheel and thermal loading conditions using the finite element program ANSYS V
(5.4). The stress states distribution within the asphalt concrete pavement that
influence the direction of crack propagation have been investigated. The obtained
results from ANSYS finite element program show that a maximum stress intensity
factor value obtained at surface and then decrease with depth about (0.75 of
asphalt layer thickness) due to reduction in temperature in asphalt layer, which
indicates that crack will initiate at surface and extend throughout asphalt layer.
The horizontal stress for both top and bottom layers increase with the variation of
thermal coefficient expansion factor. High values of stresses at top surface of
asphalt layer due to high contact stress were induced under wheel and thermal
load conditions. As a result the highway pavement exhibited propagation of
surface –initiated cracks. Field observation of cores extracted from asphalt
concrete pavement confirmed the obtained results.

Finite Element Analysis Up To Failure Of Composite Concrete – Corrugated Steel Cylindrical Shells

Ahmed T. Mahdi; Eyad K. Sayhood; Husain M. Husain

Engineering and Technology Journal, 2009, Volume 27, Issue 13, Pages 2339-2351

This study presents three-dimensional finite element analysis to the behavior of composite concrete-corrugated steel cylindrical shell. This type of construction utilizes the advantages of both of ordinary reinforced concrete and the composite action of cylindrical shell with corrugated steel plates. The 8-node brick elements in (ANSYS v.9.0) have been used to represent the concrete, while the steel bars
are modeled as discrete axial members connected with concrete elements at shared nodes with the assumption of prefect bond between the concrete and the steel bars. The corrugated steel plate is modeled by four-node shell elements. The interface elements are modeled by using three-dimensional surface to surface contact elements connected with the nodes of concrete and steel channel elements. Comparison is made between the results obtained from the finite element analysis and the available experimental results of previous studies

Effect of Dual Reinforcement on Wear Resistance by Aluminum Compacts Reinforce by SiC, Al2O3

Mohammed Moanes Ezzaldean Ali; Hanan A. R. Akkar; A. K. M. AL-Shaikhli; Ali K. Shayyish; Muhsin J. Jweeg; Wisam Auday Hussain; Mohammed T. Hussein; Mohammad A. Al-Neami; Farah S. Al-Jabary; Jafar M. Hassan; Ali H. Tarrad; Mohammed N. Abdullah; Ahmed T. Mahdi; Eyad K. Sayhood; Husain M. Husain; Nidaa F. Hassan; Rehab F. Hassan; Akbas E. Ali; Assim H Yousif; Kassim K Abbas; Aqeel M Jary; Shakir A. Salih; Ali T. Jasim; Ammar A. Ali; Hosham Salim; JafarM. Daif; Ali H. Al Aboodi; Ammar S. Dawood; Sarmad A. Abbas; Salah Mahdi Saleh; Roshen T. Ahmed; Aseel B. Al-Zubaidi; Mohammed Y. Hassan; Majid A. Oleiwi; Shaimaa Mahmood Mahdy; Husain M. Husain; Mohammed J. Hamood; Shaima; a Tariq Sakin

Engineering and Technology Journal, 2009, Volume 27, Issue 13, Pages 423-429

The producing composite materials of dual reinforcement in which the matrix material is aluminum reinforced with two types of ceramic particles : which are Alumina (50μm

Keywords

composite materials; wear test ; Al2O3; SiC: Al