Fracture simulation for ductile materials by using damage model and finite cover method

2016 ◽  
Vol 2016 (0) ◽  
pp. OS08-05
Author(s):  
Hirofumi SUGIYAMA ◽  
Kazumi MATSUI ◽  
Takahiro YAMADA
Keyword(s):  
Damage Model ◽  
Finite Cover ◽  
Ductile Materials ◽  
Fracture Simulation ◽  
Finite Cover Method

scholarly journals DEVELOPMENT OF FRACTURE SIMULATION BY THE FINITE COVER METHOD USING INTERFACE ELEMENT

2005 ◽  
pp. 213-225 ◽  
Author(s):  
Tateki ISHII ◽  
Kenjiro TERADA ◽  
Takashi KYOYA ◽  
Yuji KISHINO
Keyword(s):  
Interface Element ◽  
Finite Cover ◽  
Fracture Simulation ◽  
Finite Cover Method

Ductile fracture simulations by damage model and finite cover method

2016 ◽  
Vol 2016.29 (0) ◽  
pp. 4_210
Author(s):  
Hirofumi SUGIYAMA ◽  
Kazumi MATSUI ◽  
Takahiro YAMADA
Keyword(s):  
Ductile Fracture ◽  
Damage Model ◽  
Finite Cover ◽  
Finite Cover Method

Comparison of Interfacial and Continuum Models for Dynamic Fragmentation Analysis

2018 ◽  
Author(s):  
Bahador Bahmani ◽  
Philip Clarke ◽  
Reza Abedi
Keyword(s):  
Damage Model ◽  
Compressive Load ◽  
Stochastic Field ◽  
Damage Models ◽  
Coupled Equations ◽  
Rate Dependent ◽  
Fracture Simulation ◽  
Microstructure Effects ◽  
Dynamic Brittle Fracture ◽  
Final System

The microstructural design has an essential effect on the fracture response of brittle materials. We present a stochastic bulk damage formulation to model dynamic brittle fracture. This model is compared with a similar interfacial model for homogeneous and heterogeneous materials. The damage models are rate-dependent, and the corresponding damage evolution includes delay effects. The delay effect provides mesh objectivity with much less computational efforts. A stochastic field is defined for material cohesion and fracture strength to involve microstructure effects in the proposed formulations. The statistical fields are constructed through the Karhunen-Loeve (KL) method. An advanced asynchronous Spacetime Discontinuous Galerkin (aSDG) method is used to discretize the final system of coupled equations. Application of the presented formulation is shown through dynamic fracture simulation of rock under a uniaxial compressive load. The final results show that a stochastic bulk damage model produces more realistic results in comparison with a homogenizes model.

904 Improvement of accuracy in finite cover method by mesh superposition method

2005 ◽  
Vol 2005.18 (0) ◽  
pp. 177-178
Author(s):  
Katsuyuki SUZUKI ◽  
Shogo NAKASUMI ◽  
Toshifumi SHIMAMURA
Keyword(s):  
Superposition Method ◽  
Finite Cover ◽  
Finite Cover Method
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