FINITE ELEMENT INVESTIGATION OF MECHANICAL BEHAVIOR OF RHOMBIC DODECAHEDRON MICRO-STRUCTURES UNDER STATIC LOADING

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Hedayati Reza; SADIGHI MOJTABA

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Seminar Paper

Paper Information

Seminar: INTERNATIONAL CONFERENCE ON MEMS AND MICROFABRICATION (ICMEMS)
Year:2014 | Issue:1

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Title

FINITE ELEMENT INVESTIGATION OF MECHANICAL BEHAVIOR OF RHOMBIC DODECAHEDRON MICRO-STRUCTURES UNDER STATIC LOADING

Author(s)

Hedayati Reza | SADIGHI MOJTABA

Keywords

RHOMBIC DODECAHEDRON

MICRO-STRUCTURE

SELECTIVE LASER MELTING

IMPLANT

Abstract

IN THIS PAPER, THE STRUCTURES CONSTRUCTED AND TESTED BY YAVARI ET AL [8] WAS INVESTIGATED NUMERICALLY USING ANSYS (FOR THE ELASTIC PROPERTIES), AND LS-DYNA (FOR THE YIELDING BEHAVIOR) FINITE ELEMENT CODES. IN THEIR WORK, RHOMBIC DODECAHEDRON INTERCONNECTED CELLS WERE CREATED USING SLM METHOD. THE RESULTS SHOWED THAT CONSIDERING IRREGULARITY IN CROSS-SECTION OF THE STRUCTURE STRUTS DECREASES BOTH THE YIELDING STRESS AND DENSIFICATION STRAIN. ALSO, BOTH THE VALUES OBTAINED FOR THE IRREGULAR STRUCTURE ARE CLOSER TO THE EXPERIMENTAL RESULTS. ANOTHER CONCLUSION WAS THAT THE BOTH THE PLATEAU STRESS AND DENSIFICATION STRAIN OF THE FEM SOLUTION ARE HIGHER THAN THE EXPERIMENTAL VALUES. THIS CAN BE ATTRIBUTED TO LOWER AMOUNT OF DAMAGE CONSIDERED IN THE MODELED STRUTS. THE RESULTS ALSO SHOWED THAT THE PLATEAU STRESS DECREASES BY INCREASING THE POROSITY. BY INCREASING THE POROSITY OF THE STRUCTURE, THE DENSIFICATION STRAIN FIRST INCREASES BUT THEN DECREASES.

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APA: Copy

Hedayati, Reza, & SADIGHI, MOJTABA. (2014). FINITE ELEMENT INVESTIGATION OF MECHANICAL BEHAVIOR OF RHOMBIC DODECAHEDRON MICRO-STRUCTURES UNDER STATIC LOADING. INTERNATIONAL CONFERENCE ON MEMS AND MICROFABRICATION (ICMEMS). SID. https://sid.ir/paper/940862/en

Vancouver: Copy

Hedayati Reza, SADIGHI MOJTABA. FINITE ELEMENT INVESTIGATION OF MECHANICAL BEHAVIOR OF RHOMBIC DODECAHEDRON MICRO-STRUCTURES UNDER STATIC LOADING. 2014. Available from: https://sid.ir/paper/940862/en

IEEE: Copy

Reza Hedayati, and MOJTABA SADIGHI, “FINITE ELEMENT INVESTIGATION OF MECHANICAL BEHAVIOR OF RHOMBIC DODECAHEDRON MICRO-STRUCTURES UNDER STATIC LOADING,” presented at the INTERNATIONAL CONFERENCE ON MEMS AND MICROFABRICATION (ICMEMS). 2014, [Online]. Available: https://sid.ir/paper/940862/en

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