Natural Vibration of a Beam with a Breathing Oblique Crack
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所属单位：航空学院
发表刊物：SHOCK AND VIBRATION
关键字：STRESS INTENSITY FACTORS GENERAL WEIGHT FUNCTION KINKED EDGE CRACKS PLANE
摘要：An analytical method is proposed to calculate the natural frequency of a cantilever beam with a breathing oblique crack. A double-linear-springs-model is developed in the modal analysis process to describe the breathing oblique crack, and the breathing behaviour of the oblique crack is objectively simulated. The finite element method (FEM) analysis software ABAQUS is used to calculate the geometric correction factors when the cracked plate is subjected to a pure bending moment at different oblique crack angles and relative depths. The Galerkin method is applied to simplify the cracked beam to a single degree of freedom system, allowing the natural frequency of the beam with the breathing oblique crack to be calculated. Compared with the natural frequencies of the breathing oblique cracked beam obtained using the ABAQUS FEM method, the proposed analytical method exhibits a high computational accuracy, with a maximum error of only 4.65%.
ISSN号：1070-9622
是否译文：否
发表时间：2017-01-01
合写作者：Ma, Yijiang
通讯作者：陈国平