Abstract
For a compression-shear mixed mode interface crack, it is difficult to solve the stress and strain fields considering the material viscosity, the crack-tip singularity, the frictional effect, and the mixed loading level. In this paper, a mechanical model of the dynamic propagation interface crack for the compression-shear mixed mode is proposed using an elastic-viscoplastic constitutive model. The governing equations of propagation crack interface at the crack-tip are given. The numerical analysis is performed for the interface crack of the compression-shear mixed mode by introducing a displacement function and some boundary conditions. The distributed regularities of stress field of the interface crack-tip are discussed with several special parameters. The final results show that the viscosity effect and the frictional contact effect on the crack surface and the mixed-load parameter are important factors in studying the mixed mode interface cracktip fields. These fields are controlled by the viscosity coefficient, the Mach number, and the singularity exponent.
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Project supported by the National Natural Science Foundation of China (No. 11302054) and the Fundamental Research Funds for the Central Universities (No.HEUCF130216)
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Liang, Wy., Wang, Zq., Liu, F. et al. Elastic-viscoplastic field at mixed-mode interface crack-tip under compression and shear. Appl. Math. Mech.-Engl. Ed. 35, 887–896 (2014). https://doi.org/10.1007/s10483-014-1838-9
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DOI: https://doi.org/10.1007/s10483-014-1838-9
Key words
- compression-shear mixed mode interface crack
- dynamic propagation
- viscosity effect
- elastic-viscoplastic material
- friction effect
- mixed-load parameter