FLEXURAL BEHAVIOR OF STIFFENED FOAM CORE SANDWICH PANEL WITH ONE LAYER AND DIFFERENT SHAPE FOR STIFFENER

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RAHMANI R.; RAHIMI G.H.; MOHAMMADI A.A.; RAHMATI R.

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Seminar Paper

Paper Information

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

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Title

FLEXURAL BEHAVIOR OF STIFFENED FOAM CORE SANDWICH PANEL WITH ONE LAYER AND DIFFERENT SHAPE FOR STIFFENER

Author(s)

RAHMANI R. | RAHIMI G.H. | MOHAMMADI A.A. | RAHMATI R.

Keywords

SANDWICH PANEL

STIFFENED CORE

FLEXURAL STIFFNESS

COMPOSITE SKINS

Abstract

IN THIS RESEARCH THE STUDY OF A NEW TYPE SANDWICH PANEL WITH GLASS/EPOXY SKINS AND CORRUGATED COMPOSITE-FOAM CORE UNDER TRANSVERSE LOADING ARE CONSIDERED. SANDWICH PANELS ARE A TYPE OF COMPOSITES THAT CONSIST OF TWO OUTER STRONG AND THIN SKINS AND A LIGHT AND THICK CORE LOCATED IN BETWEEN THE SKINS THAT PROVIDE GOOD ADVANTAGES LIKE HIGH STRENGTH/STIFFNESS TO WEIGHT OR MASS RATIO. CORRUGATED COMPOSITE LAMINATE WAS BUILT USING THE HAND LAYUP METHOD AND THE EXPERIMENTAL TECHNIQUE, VARTM (VACUUM ASSISTED RESIN TRANSFER MOLDING) WAS USED TO JOIN THE SKINS TO THE CORE WITH HIGHER QUALITY. SINGLE-POINT BENDING TEST LOAD WAS APPLIED TO THE SAMPLES ACCORDING TO ASTM STANDARD. FINITE ELEMENT ANALYSIS WAS APPLIED FOR DETERMINING MAXIMUM DEFLECTIONS OF SAMPLES, AS A SECOND METHOD. TWO TYPES OF CORE ARE CONSIDERED. FIRST IS A SIMPLE FOAM CORE BUT IN SECOND A CORRUGATED COMPOSITE LAMINATE WITH THREE DIFFERENT SHAPE CONSIST OF RECTANGULAR, TRIANGULAR AND TRAPEZOIDAL WITH ONE LAYER FOR THICKNESS AND 2 CENTIMETER FOR WAVELENGTH IS IMPROVISED. IT HAS BEEN SHOWN THAT THE FLEXURAL STIFFNESS OF SECOND TYPE SANDWICH PANEL WAS IMPROVED WITH CHANGING THE GEOMETRIC SHAPE OF CORRUGATED COMPOSITE IN FROM TRIANGULAR TO RECTANGULAR AND TRAPEZOIDAL. THE FLEXURAL STIFFNESS TO MASS RATIO WAS IMPROVED RESPECT TO SAMPLE WITH SIMPLE FOAM CORE BY ADDING ONE LAYER WOVEN GLASS-EPOXY CORRUGATED COMPOSITE WITH THREE GEOMETRIC SHAPE TO PVC FOAM CORE TOO. FINALLY THE EXPERIMENTAL AND FINITE ELEMENT RESULTS WERE COMPARED. ALSO THE NUMERICAL RESULTS SHOW A GOOD AGREEMENT WITH EXPERIMENTAL RESULTS.

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APA: Copy

RAHMANI, R., RAHIMI, G.H., MOHAMMADI, A.A., & RAHMATI, R.. (2015). FLEXURAL BEHAVIOR OF STIFFENED FOAM CORE SANDWICH PANEL WITH ONE LAYER AND DIFFERENT SHAPE FOR STIFFENER. CONFERENCE OF IRANIAN AEROSPACE SOCIETY. SID. https://sid.ir/paper/945729/en

Vancouver: Copy

RAHMANI R., RAHIMI G.H., MOHAMMADI A.A., RAHMATI R.. FLEXURAL BEHAVIOR OF STIFFENED FOAM CORE SANDWICH PANEL WITH ONE LAYER AND DIFFERENT SHAPE FOR STIFFENER. 2015. Available from: https://sid.ir/paper/945729/en

IEEE: Copy

R. RAHMANI, G.H. RAHIMI, A.A. MOHAMMADI, and R. RAHMATI, “FLEXURAL BEHAVIOR OF STIFFENED FOAM CORE SANDWICH PANEL WITH ONE LAYER AND DIFFERENT SHAPE FOR STIFFENER,” presented at the CONFERENCE OF IRANIAN AEROSPACE SOCIETY. 2015, [Online]. Available: https://sid.ir/paper/945729/en

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