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  • Advanced general particle d...
    Zhou, Xiao‐Ping; Yao, Wu‐Wen; Berto, Filippo

    Fatigue & fracture of engineering materials & structures, October 2022, Volume: 45, Issue: 10
    Journal Article

    The general particle dynamics (GPD), which is based on the kernel approximation method and Navier–Stokes equation, was developed from smoothed‐particle hydrodynamics to simulate the fracture behaviors by using the collective of damage variable to describe the damage evolution behaviors. In this paper, an advanced GPD with a nonlocal foundation is proposed for better description of the solid mechanics. The nonlocal vector calculus and microscopic constitutive model are employed to derive the governing equations in the proposed theory. The novel GPD with a nonlocal core is a generalization, which permits the inclusion of the microscopic constitutive model and the multi‐scale modeling compared with the previous GPD. To accomplish this generalization, the relationship between GPD and the previous kernel‐based theory is established. The novel GPD is superior in the fracture problems and multi‐scale modeling. Some numerical experiments are launched to verify the ability of the novel GPD. Highlights Advanced GPD with nonlocal foundation for is proposed for better description of the solid mechanics. The governing equations are re‐derived by nonlocal vector calculus and micro‐bond model. The advanced GPD is good at handling with multi‐scale problem and fracture problems.