Abstract
In finite element simulations of fracture, cohesive elements introduce artificial compliance into the model leading to changes in properties such as the effective stiffness, effective speed of sound, and crack propagation speed. In this paper, the relation between effective material properties and cohesive element properties is determined analytically. Based on this, a simple method for rescaling the cohesive element thickness is proposed to reduce the effect of artificial compliance and to obtain mesh independent results. The effectiveness of this approach is demonstrated with four example problems: uniaxial stretching, beam bending, bar impact, and Kalthoff plate impact.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 89-99 |
| Number of pages | 11 |
| Journal | Engineering Fracture Mechanics |
| Volume | 213 |
| DOIs | |
| State | Published - May 15 2019 |
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Keywords
- Abaqus
- Cohesive elements
- Finite element method
- Fracture mechanics
- Mesh dependence
Cite this
Rescaling cohesive element properties for mesh independent fracture simulations. / Fan, Jiadi; Tadmor, Ellad B.
In: Engineering Fracture Mechanics, Vol. 213, 15.05.2019, p. 89-99.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Rescaling cohesive element properties for mesh independent fracture simulations
AU - Fan, Jiadi
AU - Tadmor, Ellad B
PY - 2019/5/15
Y1 - 2019/5/15
N2 - In finite element simulations of fracture, cohesive elements introduce artificial compliance into the model leading to changes in properties such as the effective stiffness, effective speed of sound, and crack propagation speed. In this paper, the relation between effective material properties and cohesive element properties is determined analytically. Based on this, a simple method for rescaling the cohesive element thickness is proposed to reduce the effect of artificial compliance and to obtain mesh independent results. The effectiveness of this approach is demonstrated with four example problems: uniaxial stretching, beam bending, bar impact, and Kalthoff plate impact.
AB - In finite element simulations of fracture, cohesive elements introduce artificial compliance into the model leading to changes in properties such as the effective stiffness, effective speed of sound, and crack propagation speed. In this paper, the relation between effective material properties and cohesive element properties is determined analytically. Based on this, a simple method for rescaling the cohesive element thickness is proposed to reduce the effect of artificial compliance and to obtain mesh independent results. The effectiveness of this approach is demonstrated with four example problems: uniaxial stretching, beam bending, bar impact, and Kalthoff plate impact.
KW - Abaqus
KW - Cohesive elements
KW - Finite element method
KW - Fracture mechanics
KW - Mesh dependence
UR - http://www.scopus.com/inward/record.url?scp=85063731443&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85063731443&partnerID=8YFLogxK
U2 - 10.1016/j.engfracmech.2019.03.035
DO - 10.1016/j.engfracmech.2019.03.035
M3 - Article
VL - 213
SP - 89
EP - 99
JO - Engineering Fracture Mechanics
JF - Engineering Fracture Mechanics
SN - 0013-7944
ER -