TY - JOUR
T1 - Fracture simulation based on EA-cohesive model with natural fracture/decohesion mechanism
AU - He, Minghua
AU - Xin, Kegui
AU - Guo, Jia
N1 - Funding Information:
We gratefully acknowledge that this paper is supported by the National Natural Science Foundation of China (Grant #: 50878117, Key Project Grant #: 51038006) and China Scholarship Council Project (HE-2009621076).
PY - 2011
Y1 - 2011
N2 - The material strength is dependent on micro structure in which there is no well-recognized idea to predict the complex structure process of fracture. For the fundamental simulation of metallic material, the embedded atom method (EAM) is exclusively practical along with satisfactory accuracy. Fracture simulation based on EA-cohesive (Embedded Atom Cohesive) model is presented to demonstrate the effectiveness of natural fracture/decohesion mechanism compared with the prescribed fracture criteria and cohesive law. EA-cohesive model uses the Cauchy-Born rule to form the communication between the macro deformation and the micro structure evolution within the stable material region. The educed constitutive models within EA-cohesive model incorporate both normal and tangential cohesive laws with respect to the surface separation within the unstable material regions naturally (natural fracture/decohesion mechanism hereafter). Fracture simulation results of prototype high strength steel plate are presented to demonstrate the natural capacity of simulating fracture of EA-cohesive model.
AB - The material strength is dependent on micro structure in which there is no well-recognized idea to predict the complex structure process of fracture. For the fundamental simulation of metallic material, the embedded atom method (EAM) is exclusively practical along with satisfactory accuracy. Fracture simulation based on EA-cohesive (Embedded Atom Cohesive) model is presented to demonstrate the effectiveness of natural fracture/decohesion mechanism compared with the prescribed fracture criteria and cohesive law. EA-cohesive model uses the Cauchy-Born rule to form the communication between the macro deformation and the micro structure evolution within the stable material region. The educed constitutive models within EA-cohesive model incorporate both normal and tangential cohesive laws with respect to the surface separation within the unstable material regions naturally (natural fracture/decohesion mechanism hereafter). Fracture simulation results of prototype high strength steel plate are presented to demonstrate the natural capacity of simulating fracture of EA-cohesive model.
KW - Cauchy-Born rule
KW - Cohesive zone paradigm
KW - Embedded atom method
KW - Multiscale simulation
UR - http://www.scopus.com/inward/record.url?scp=80052920911&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80052920911&partnerID=8YFLogxK
U2 - 10.1016/j.proeng.2011.04.045
DO - 10.1016/j.proeng.2011.04.045
M3 - Article
AN - SCOPUS:80052920911
VL - 10
SP - 254
EP - 261
JO - Procedia Engineering
JF - Procedia Engineering
SN - 1877-7058
ER -