Simulation of Damage and Crack Propagation in Three-Point Bending Asphalt Concrete Beam
A brittle damage-based constitutive model is proposed to characterize the crack initiation and propagation behavior of asphalt mastic under low temperature.The fracture criterion is regarded as a dominant of damage.For asphalt concrete combining aggregate and asphalt mastic,a 2D finite element model including the aggregate generation and packing algorithm and Usermat subroutine technique is developed to perform the crack initiation and propagation.A series of FE simulations are performed to evaluate effects of crack location on crack propagation of asphalt concrete.The numerical results are validated by comparison with the corresponding experiments and other result which based on fracture criterion of maximum circumferential tensile stress.The model and method are proved to be rational and capable of describing the cracking behavior of asphalt concrete with different crack location.
Asphalt concrete Three-Point Bending Beam Numerical Simulation Brittle Damage Crack
Guowei Zeng Xinhua Yang Fan Bai Anyi Yin
School of Civil Engineering and Mechanics,Huazhong University of Science and Technology,430074,China School of Civil Engineering and Mechanics,Huazhong University of Science and Technology,430074,China
国际会议
北京
英文
1-9
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）