Page 25 - eBook_Proceedings of the International Conference on Digital Manufacturing V2

Collaborative Study on Weight Optimisation of Lubricant Bottles under
Stacking Condition using Finite Element Analysis and Machine Learning

the experimental execution at room temperature at an extension
rate of 2 mm/min and 50 mm/min for compression and tensile test,
respectively. The test results were recorded as load against
displacement, which was then converted into an engineering
stress-strain curve. Figure 3 illustrates the average stress strain
curve plotted by performing the compression and tensile tests on
five sample specimens each, respectively.

Figure 3: Average Compressive and Tensile Stress-Strain Curve
below the yield point

Computer Aided Engineering and Hyper elastic modelling

The analysed 3D CAD model of 1-liter bottle is obtained from the
open-source CAD platform - Grab CAD. To establish a SOP for
the structural optimisation of bottle, four different CAD models
are developed, as illustrated in Figure 4. Since the study is
focused on von-misses stress and deformation of HDPE lubricant
can under stack loading, CAD model is simplified by removing
the bottle cap and threads on neck. Furthermore, the weight of a
can is defined based on the material density which was 0.955
g/cm3.

9