Fatigue Cracking Mechanisms in Asphalt Pavements with Viscoelastic Continuum Damage Finite-Element Program

2004 ◽  
Vol 1896 (1) ◽  
pp. 96-106 ◽  
Author(s):  
Sungho Mun ◽  
Murthy N. Guddati ◽  
Y. Richard Kim
Keyword(s):  
Finite Element ◽  
Fatigue Cracking ◽  
Asphalt Pavements ◽  
Continuum Damage ◽  
Finite Element Program ◽  
Viscoelastic Continuum Damage ◽  
Element Program ◽  
Cracking Mechanisms

Fatigue cracking simulation of aged asphalt pavements using a viscoelastic continuum damage model

2018 ◽  
Vol 19 (3) ◽  
pp. 546-560 ◽  
Author(s):  
Lucas F. de A. L. Babadopulos ◽  
Jorge B. Soares ◽  
Jorge Luis S. Ferreira ◽  
Luis Alberto H. do Nascimento
Keyword(s):  
Damage Model ◽  
Fatigue Cracking ◽  
Asphalt Pavements ◽  
Continuum Damage ◽  
Continuum Damage Model ◽  
Viscoelastic Continuum Damage ◽  
Aged Asphalt

scholarly journals The impact of drilling and slitting construction on damage field: evolution characteristics in low-permeability coal seam

2021 ◽  
Vol 37 ◽  
pp. 205-215
Author(s):  
Heng Chen ◽  
Hongmei Cheng ◽  
Aibin Xu ◽  
Yi Xue ◽  
Weihong Peng
Keyword(s):  
Finite Element ◽  
Rock Mass ◽  
Damage Mechanics ◽  
Effective Strain ◽  
Secondary Development ◽  
Distribution Area ◽  
Finite Element Program ◽  
Element Program ◽  
Mining Face ◽  
The Impact

ABSTRACT The fracture field of coal and rock mass is the main channel for gas migration and accumulation. Exploring the evolution law of fracture field of coal and rock mass under the condition of drilling and slitting construction has important theoretical significance for guiding efficient gas drainage. The generation and evolution process of coal and rock fissures is also the development and accumulation process of its damage. Therefore, based on damage mechanics and finite element theory, the mathematical model is established. The damage variable of coal mass is defined by effective strain, the elastoplastic damage constitutive equation is established and the secondary development of finite element program is completed by FORTRAN language. Using this program, the numerical simulation of drilling and slitting construction of the 15-14120 mining face of Pingdingshan No. 8 Mine is carried out, and the effects of different single borehole diameters, different kerf widths and different kerf heights on the distribution area of surrounding coal fracture field and the degree of damage are studied quantitatively. These provide a theoretical basis for the reasonable determination of the slitting and drilling arrangement parameters at the engineering site.

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