Deformation And Stress Analysis Of 3D Printed Spanner Wrench
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Date
2022-07-24
Authors
Ang, Cheau Hui
Journal Title
Journal ISSN
Volume Title
Publisher
Universiti Sains Malaysia
Abstract
The 3D printing technology creates an object by printing the materials layer by
layer, and thus the printing orientation used in creating the object highly influenced its
mechanical properties. The goal of this study is to evaluate the mechanical behaviour
of the 3D printing materials based on different printing orientations through mechanical
testing such as tensile test, compression test, and bending test. The result shows that
under different printing orientations, the 3D printing material, PLA behaves differently
as the mechanical properties of PLA are dependent on the direction of force acting on
it. The finite element simulation of each mechanical testing will be performed and the
results obtained is compared with the results from the laboratory experiments. The
project will then continue with the optimization in designing a 3D printed spanner
wrench using different types of 3D printing materials, such as PLA and ABS. The 3D
printed spanner wrench is optimized by changing the dimension of the spanner wrench,
such as length and thickness. Then, the FEA simulation is done on the 3D printed
spanner wrench at the condition of tightening or loosening the bolt using different
values of forces. The result shows that the spanner with a longer length and a higher
thickness makes the spanner becomes tougher and to withstand more force acting on it.
By comparing the materials applied to it, PLA is more suitable to use in fabricating the
spanner wrench than ABS due to its high tensile strength. For all the designed spanner
wrench, the stress will concentrate at the sharp edge near the groove of the spanner
wrench. The design of the spanner wrench needs to be further optimized.