Investigation of the effects of pore morphology on the energy absorption of cellular lattice structures

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Karamooz Ravari Mohammad Reza; Saghazadeh Mahani Zahra; DEHGHANI REZA

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Journal: AEROSPACE KNOWLEDGE AND TECHNOLOGY JOURNAL Year:2020 | Volume:8 | Issue:2 Page(s): 41-53

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Title

Investigation of the effects of pore morphology on the energy absorption of cellular lattice structures

Author(s)

Karamooz Ravari Mohammad Reza | Saghazadeh Mahani Zahra | DEHGHANI REZA | Issue Writer Certificate

Keywords

energy absorptionQ1

Dynamic responseQ2

cellular materialsQ2

pore morphologyQ1

Strain RateQ1

Abstract

cellular materials are widely used in aerospace industries due to high energy absorption and strength-to-weight ratio. In this paper, the Dynamic response of these materials is numerically investigated in order to assess the effects of porosity, Strain Rate and various pore morphologies on the mechanical response. To do so, two-dimensional finite element models, with different pore morphologies at various porosities and Strain Rates, are developed utilizing Johnson-Cook strength and failure model through ABAQUS finite element package. The obtained results show that the mechanical responses of these materials strongly depend on the pore morphologies. Among the different morphologies, the highest energy absorption is associated with the vertical ellipse and vertical rectangle morphology. In addition, the energy absorption of each morphology is a function of the porosity value and, depending on the porosity, an appropriate morphology can be selected for the sake of maximum energy absorption. The collapse stress of the material increases by increasing the Strain Rate until reaching a specific value and then decreases due to the high stress wave.

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APA: Copy

Karamooz Ravari, Mohammad Reza, Saghazadeh Mahani, Zahra, & DEHGHANI, REZA. (2020). Investigation of the effects of pore morphology on the energy absorption of cellular lattice structures. AEROSPACE KNOWLEDGE AND TECHNOLOGY JOURNAL, 8(2 ), 41-53. SID. https://sid.ir/paper/264168/en

Vancouver: Copy

Karamooz Ravari Mohammad Reza, Saghazadeh Mahani Zahra, DEHGHANI REZA. Investigation of the effects of pore morphology on the energy absorption of cellular lattice structures. AEROSPACE KNOWLEDGE AND TECHNOLOGY JOURNAL[Internet]. 2020;8(2 ):41-53. Available from: https://sid.ir/paper/264168/en

IEEE: Copy

Mohammad Reza Karamooz Ravari, Zahra Saghazadeh Mahani, and REZA DEHGHANI, “Investigation of the effects of pore morphology on the energy absorption of cellular lattice structures,” AEROSPACE KNOWLEDGE AND TECHNOLOGY JOURNAL, vol. 8, no. 2 , pp. 41–53, 2020, [Online]. Available: https://sid.ir/paper/264168/en

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