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Date Submitted: 03/19/2013 09:38 PM
School of Built Environment and Engineering
ENB270 Engineering Mechanics of Materials
Portal Frame Project
Lecturer: Fraser McGregor
Tutor: Wahyu Hasan
Due Date: 20/05/2011
Authenticity Statement
We (the undersigned) declare that all the material contained in this assignment has been compiled by us with all attributions of materials not derived by the group members appropriately attributed.
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The copyright for this assignment remains with the authors, but we allow our Heads of School or their nominees to make copies without notice. Signed by Assignment Author:
ENB270 Engineering Mechanics of Materials Portal Frame Project
Page i
Executive Summary
Team002 endeavour to design and construct projects through professional engineering practise, by researching the problem presented and issues that may need to be resolved. We have also determined a desirable outcome for you and have outlined the processes which lead to the desired outcome. This report will demonstrate, in depth, this professional engineering design processes. This report contains the following information; • • • • • • • • • Background research Conceptual design Engineering design process Materials test results Calculation analysis Final design Construction process Load and failure predictions Testing results
Research was conducted on major aspects such as types of portal frames, advantages and disadvantages, design factors, materials and adhesives. From research it was gathered that an ‘I beam’ cross section would fulfil the needs for the project. Web stiffeners would be introduced during construction due to the prone nature of torsion in the design.
In order to select a suitable design, in accordance AS4063.1, balsa wood samples were tested under progressive loads for elasticity and failure strength. Design calculations regarding second moment of area, shear forces, bending moments, torsion, bending strength, deflection, Mohr’s circle and space...