1. 含裂纹功能梯度板能量释放率的ABAQUS 用户子程序开发.
- Author
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周立明, 任书慧, 孟广伟, and 李荣佳
- Subjects
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DYNAMIC testing of materials , *FINITE element method software , *PLATE , *THERMAL stress cracking , *SUBROUTINES (Computer programs) - Abstract
To obtain the dynamic energy releasing rate of the functionally graded plate with cracks, a virtual crack closure technique was proposed based on the inhomogeneous finite element method. A fracture dummy node element of the functionally graded material under dynamic loading was developed, user-defined subroutines named UMAT and UEL were programmed, and the component of energy releasing rate for the functionally graded plate caused by dynamic loading was calculated based on the finite element software ABAQUS platform. For the different shape factors such as the center-crack and inclined-crack inside the functionally graded plates, the component of the dynamic energy releasing rate was solved, and then it was transformed into the dynamic stress intensity factor, which was used for comparing the results calculated by the finite difference method. The numerical calculating results showed that the dummy node element of the functionally graded material fracture caused by dynamic loading is characterized by high precision, simplicity and convenience without using the singular element or special element for the crack tip and the versatility of its subroutines, which may provide a new approach for the engineers to get the dynamic fracture parameters. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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