NUMERICAL SIMULATION OF POWER, MOVEMENT SPEED AND LASER BEAM DIAMETER IN FORMING PROCESS OF FGM PLATES ACCORDING TO THE EXPONENTIAL LAW

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MADANI NASAB H.; GOLABI S.

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Seminar Paper

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Seminar: CONFERENCE OF IRANIAN AEROSPACE SOCIETY
Year:2015 | Issue:14

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Title

NUMERICAL SIMULATION OF POWER, MOVEMENT SPEED AND LASER BEAM DIAMETER IN FORMING PROCESS OF FGM PLATES ACCORDING TO THE EXPONENTIAL LAW

Author(s)

MADANI NASAB H. | GOLABI S.

Keywords

LASER FORMING

FUNCTIONALLY GRADED MATERIALS (FGM)

TRANSVERSE BENDING

FINITE ELEMENT SIMULATION

Abstract

FUNCTIONALLY GRADED MATERIALS (FGMS) ARE MADE OF ADVANCED COMPOSITES IN WHICH THE MATERIAL PROPERTIES VARY CONTINUOUSLY AND SMOOTHLY IN A STRUCTURE. LASER BENDING IS AN ADVANCED PROCESS IN SHEET FORMING IN WHICH A LASER HEAT SOURCE IS USED TO SHAPE FGM PLATE. LASER FORMING OF FUNCTIONALLY GRADED METAL –METAL PLATES OFFERS THE ADVANTAGES OF REQUIRING NO EXTERNAL FORCES AND THUS REDUCES COST AND INCREASES FLEXIBILITY. FGM PLATE FORMING BY USING A MODERN LASER TECHNIQUE IS TAKEN INTO CONSIDERATION IN THIS PAPER. IT IS ASSUMED THAT THE MATERIAL PROPERTY OF EACH PLATE VARIES EXPONENTIALLY THROUGH THE THICKNESS. THIS PAPER PRESENTS A NUMERICAL MODEL TO ESTIMATE THE ANGLE BENT DURING THE LASER FORMING OF A FGM PLATE. FINITE ELEMENT (FE) SIMULATION IS PERFORMED WITH THE ABAQUS/CAE STANDARD SOFTWARE PACKAGE. THREE DIMENSIONAL NONLINEAR COUPLED THERMO-MECHANICAL SOLID ELEMENTS WITH EIGHT NODES C3D8T ARE USED FOR THERMAL AND STRUCTURE ANALYSIS. FOR THE ANALYSIS, THE SAME MESH MODEL IS USED. ACCORDING TO THE LAW OF THE CHANGE IN THE PROPERTIES OF FGM MATERIAL IN LINE WITH THE SHEET THICKNESS, THE SUBROUTINE FOR THE APPLICATION OF MATTER SPECIFICATIONS (VUMAT) IS USED TO DEFINE MATTER. BY USING FINITE ELEMENT SIMULATION, THE EFFECTS OF MOVEMENT SPEED, LASER DIAMETER AND LASER POWER ON THE VALUE OF THE FGM PLATE TRANSVERSE BENDING ANGLE ARE INVESTIGATED. BY COMPARING THE SIMULATION WITH ANALYTICAL FORMULAS, IT IS OBSERVED THAT THE FE RESULTS ARE IN GOOD AGREEMENT WITH THE ANALYTICAL RESULTS. PLASTIC DEFORMATION IS CONSIDERED DURING BOTH HEATING AND COOLING AND IS CALCULATED BASED ON A HISTORYDEPENDENT INCREMENTAL STRESS–STRAIN RELATIONSHIP. ON THE BASIS OF THE PROPOSED MODEL WITH KNOWN TEMPERATURE DISTRIBUTIONS, THE BENDING ANGLE INDUCED BY LASER CAN BE CALCULATED. COMPARISON OF THE PRESENT MODEL WITH ANALYTICAL DATA IS PROVIDED TO DEMONSTRATE THE ACCURACY OF THE PRESENT MODEL UNDER TGM.

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APA: Copy

MADANI NASAB, H., & GOLABI, S.. (2015). NUMERICAL SIMULATION OF POWER, MOVEMENT SPEED AND LASER BEAM DIAMETER IN FORMING PROCESS OF FGM PLATES ACCORDING TO THE EXPONENTIAL LAW. CONFERENCE OF IRANIAN AEROSPACE SOCIETY. SID. https://sid.ir/paper/945616/en

Vancouver: Copy

MADANI NASAB H., GOLABI S.. NUMERICAL SIMULATION OF POWER, MOVEMENT SPEED AND LASER BEAM DIAMETER IN FORMING PROCESS OF FGM PLATES ACCORDING TO THE EXPONENTIAL LAW. 2015. Available from: https://sid.ir/paper/945616/en

IEEE: Copy

H. MADANI NASAB, and S. GOLABI, “NUMERICAL SIMULATION OF POWER, MOVEMENT SPEED AND LASER BEAM DIAMETER IN FORMING PROCESS OF FGM PLATES ACCORDING TO THE EXPONENTIAL LAW,” presented at the CONFERENCE OF IRANIAN AEROSPACE SOCIETY. 2015, [Online]. Available: https://sid.ir/paper/945616/en

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