Page 118 - MSAM-4-2

Materials Science in Additive Manufacturing Impact of cell angle on AlSi10Mg structures

Figure 14. Simulated stress-strain behavior of different structural single-unit cells with rotation under impact loading
Abbreviations: Dodeca: Dodecahedral; Octa: Octahedral

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before physical prototyping. The study highlights the resistance. Both the Dodeca-A and Dodeca-B structures
potential for optimizing porous structures for enhanced demonstrated significantly lower impact resistance
impact resistance from the single-unit cell angle rotation compared to Dodeca-C, as evidenced by markedly higher
perspective. hammer fall rates recorded for Dodeca-A and Dodeca-B at
The impact resistance of various single-unit cell a strain of 65.4% (Figure 15). Similarly, Octa-A exhibited
structures was also assessed by measuring changes in the superior resistance compared to Octa-B, as shown in the
velocity of an impact hammer (Figure 15). The single-unit analysis of Figure 15, which aligns with the simulated
cell structures of Dodeca-C and Octa-A were established stress-strain behaviors presented in Figure 14. Overall,
as reference standards for two major series of structures. the results from the numerical analysis are consistent with
The evaluation criterion for the other structures involved the experimental findings, confirming the reliability of
identifying the strain at which the Dodeca-C and Octa-A
structures reduced the hammer’s velocity to 0 mm/s. the numerical simulations significantly. This agreement
Throughout the simulation, under uniform strain suggests that computational modeling can be further
levels, the falling hammer’s velocity exhibited an inverse utilized to optimize the geometric parameters and predict
relationship to the impact resistance of the structures; the mechanical behavior of these design structures for
specifically, higher velocities corresponded to lower impact tailored impact properties.

Volume 4 Issue 2 (2025) 14 doi: 10.36922/MSAM025130019