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A platform for research: civil engineering, architecture and urbanism
Design of functionally graded material to reduce stress concentration around semicircular notches for Inplane tensile and bending loads
https://orcid.org/http://orcid.org/0000-0002-0070-4222
Functionally graded material (FGM) is a novel composite material inspired by nature. It is suitable material for high performance lightweight structure applications in engineering and space. Present work aims to design FGM layer for reduction of stress concentration around semicircular notches. Young’s modulus of FGM layer has been assumed to vary along normal direction to the notches with a power law function. The extended finite element method has been applied to model the stress behavior in a panel having semicircular notches on both sides and subjected to uniaxial tension and inplane bending loads. The geometrical notch parameter, i.e. normalized notch size and FGM parameters such as power law coefficient, Young’s modulus ratio and layer thickness significantly affect the stress concentration. The values of power law coefficient 0.5 and 0.75 have been observed as optimal for inplane tension and bending loads respectively. Increasing Young’s modulus ratio up to five reduces stress concentration considerably. The thicker FGM layer shows lower stress concentration for smaller notch size however, the larger notch size causes interaction of FGM layers which affects stress concentration noticeably. In brief, applying FGM layer around semicircular notches significantly reduces the stress concentration and the regression equations have been fitted to predict the stress concentration factor value around notches.
Design of functionally graded material to reduce stress concentration around semicircular notches for Inplane tensile and bending loads
https://orcid.org/http://orcid.org/0000-0002-0070-4222
Functionally graded material (FGM) is a novel composite material inspired by nature. It is suitable material for high performance lightweight structure applications in engineering and space. Present work aims to design FGM layer for reduction of stress concentration around semicircular notches. Young’s modulus of FGM layer has been assumed to vary along normal direction to the notches with a power law function. The extended finite element method has been applied to model the stress behavior in a panel having semicircular notches on both sides and subjected to uniaxial tension and inplane bending loads. The geometrical notch parameter, i.e. normalized notch size and FGM parameters such as power law coefficient, Young’s modulus ratio and layer thickness significantly affect the stress concentration. The values of power law coefficient 0.5 and 0.75 have been observed as optimal for inplane tension and bending loads respectively. Increasing Young’s modulus ratio up to five reduces stress concentration considerably. The thicker FGM layer shows lower stress concentration for smaller notch size however, the larger notch size causes interaction of FGM layers which affects stress concentration noticeably. In brief, applying FGM layer around semicircular notches significantly reduces the stress concentration and the regression equations have been fitted to predict the stress concentration factor value around notches.
Design of functionally graded material to reduce stress concentration around semicircular notches for Inplane tensile and bending loads
https://orcid.org/http://orcid.org/0000-0002-0070-4222
Functionally graded material (FGM) is a novel composite material inspired by nature. It is suitable material for high performance lightweight structure applications in engineering and space. Present work aims to design FGM layer for reduction of stress concentration around semicircular notches. Young’s modulus of FGM layer has been assumed to vary along normal direction to the notches with a power law function. The extended finite element method has been applied to model the stress behavior in a panel having semicircular notches on both sides and subjected to uniaxial tension and inplane bending loads. The geometrical notch parameter, i.e. normalized notch size and FGM parameters such as power law coefficient, Young’s modulus ratio and layer thickness significantly affect the stress concentration. The values of power law coefficient 0.5 and 0.75 have been observed as optimal for inplane tension and bending loads respectively. Increasing Young’s modulus ratio up to five reduces stress concentration considerably. The thicker FGM layer shows lower stress concentration for smaller notch size however, the larger notch size causes interaction of FGM layers which affects stress concentration noticeably. In brief, applying FGM layer around semicircular notches significantly reduces the stress concentration and the regression equations have been fitted to predict the stress concentration factor value around notches.
Design of functionally graded material to reduce stress concentration around semicircular notches for Inplane tensile and bending loads
Int J Interact Des Manuf
Kumar, Dadhish (author) / Goyat, Vikas (author)
2025-02-01
16 pages
Article (Journal)
Electronic Resource
English
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