Irregular lattice model for quasistatic crack propagation
نویسندگان
چکیده
منابع مشابه
Irregular lattice model for quasistatic crack propagation
An irregular lattice model is proposed for simulating quasistatic fracture in softening materials. Lattice elements are defined on the edges of a Delaunay tessellation of the medium. The dual sVoronoid tessellation is used to scale the elemental stiffness terms in a manner that renders the lattice elastically homogeneous. This property enables the accurate modeling of heterogeneity, as demonstr...
متن کاملAnisotropic mesh adaptation for quasistatic crack propagation in brittle materials
The numerical simulation of quasistatic fracturing of brittle material, where no predefined crack path is imposed, is a challenging problem. In particular, we deal with the Francfort-Marigo model which requires the minimization of the well-known nonconvex and nonsmooth Mumford-Shah functional. To deal with a smoother problem which eases the minimization process of the energy, we consider the Γ-...
متن کاملAn Irregular Lattice Pore Network Model Construction Algorithm
Pore network modeling uses a network of pores connected by throats to model the void space of a porous medium and tries to predict its various characteristics during multiphase flow of various fluids. In most cases, a non-realistic regular lattice of pores is used to model the characteristics of a porous medium. Although some methodologies for extracting geologically realistic irregular net...
متن کاملQuasistatic Crack Growth for a Cohesive Zone Model with Prescribed Crack Path
In this paper we study the quasistatic crack growth for a cohesive zone model. We assume that the crack path is prescribed and we study the time evolution of the crack in the framework of the variational theory of rate-independent processes.
متن کاملQuasistatic Crack Growth in Finite Elasticity
In this paper, we prove a new existence result for a variational model of crack growth in brittle materials proposed in [15]. We consider the case of n -dimensional finite elasticity, for an arbitrary n ≥ 1 , with a quasiconvex bulk energy and with prescribed boundary deformations and applied loads, both depending on time.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2005
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.71.094106