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A new conservation integral with arbitrary singularity and its application

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Abstract

From the basic equations of elasticity, a new conservation integral of the general case of singularity, for a plate with variable thickness, subjected to body forces, in the non-uniform temperature field is derived by means of the weighted function method. The local stress field property near the tip of the V-notch plate and the stress intensity factor of several angles of V-notch plates are discussed by means of this conservative integral. The results are compared with those of the references.

R'esum'e

Par la m'ethode des fonctions de pondération, on établit à partir des équations de base de l'élasticité une nouvelle formulation de l'intégrale de conservation relative à une singularité de caractère plus général, pour une tôle d'épaisseur variable soumise à des forces mécaniques appliquées, dans un champ de température non uniforme. A l'aide de cette formulation, on discute les propriétés du champ des contraintes locales au voisinage de l'extrémité d'une entaille Vé dans la tôle, et les facteurs d'intensité des contraintes relatives à diverses ouvertures de cette entaille. Les résultats obtenus sont comparés à ceux cités en références.

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Wu, S., Zhang, X. & He, Q. A new conservation integral with arbitrary singularity and its application. Int J Fract 40, 221–233 (1989). https://doi.org/10.1007/BF00960601

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  • DOI: https://doi.org/10.1007/BF00960601

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