2019
DOI: 10.1590/1679-78255242
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Free and forced vibration analysis of multiple cracked FGM multi span continuous beams using dynamic stiffness method

Abstract: In the present paper, the free and forced vibration of multiple cracked multi span continuous beams made of functionally graded material (FGM) is investigated by the dynamic stiffness method. First, there are constructed dynamic stiffness matrix and nodal load vector of multiple cracked FGM beam element using Timoshenko beam theory and massless double spring model of crack. Then, effect of cracks parameters on free and forced vibration of the FGM continuous beams is examined. The theoretical developments are v… Show more

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Cited by 12 publications
(8 citation statements)
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References 43 publications
(42 reference statements)
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“…Various problems in dynamic analysis of functionally graded beams were studied in the widespread literature, for instance, in the works [3][4][5][6][7]. A large number of works is devoted also to study vibrations of the beams with localized damages such as cracks [8][9][10][11][12][13]. Recently, some procedures were proposed by Yu and Chu [14]; Banerjee et al [15] and Khiem and Huyen [16] to detect cracks in functionally graded beams with natural frequencies measured by the traditional technique of modal testing.…”
Section: Introductionmentioning
confidence: 99%
“…Various problems in dynamic analysis of functionally graded beams were studied in the widespread literature, for instance, in the works [3][4][5][6][7]. A large number of works is devoted also to study vibrations of the beams with localized damages such as cracks [8][9][10][11][12][13]. Recently, some procedures were proposed by Yu and Chu [14]; Banerjee et al [15] and Khiem and Huyen [16] to detect cracks in functionally graded beams with natural frequencies measured by the traditional technique of modal testing.…”
Section: Introductionmentioning
confidence: 99%
“…Vì FEM được xây dựng dựa trên các hàm dạng đa thức không phụ thuộc vào tần số nên nó không dùng để tìm tất cả các tần số và dạng dao động, đặc biệt bậc cao. Để khắc phục điều này, phương pháp độ cứng động lực (DSM) đã được phát triển để thay thế FEM bằng cách sử dụng các hàm dạng phụ thuộc tần số [34][35][36]. Mặc dù không dễ dàng tìm được các nghiệm giải tích chính xác như vậy cho các bài toán dao động của dầm nano nhưng nếu tìm được thì chúng cho phép nghiên cứu dao động chính xác của dầm trong dải tần số tùy ý. Adhikari và cs.…”
Section: Giới Thiệuunclassified
“…Very recently, Kou and Yang developed a mesh-free boundary-domain integral equation method to analyse the free vibration behaviours of the FGB with edged cracks [9]. On the other hand, many researches have examined the case of a cracked FGB subjected to external loadings in the form of moving loads or axial forces [10][11][12][13][14][15][16]. Lately, Lin-Feng Zhu et al [17] analysed the vibrational power flow of a cracked FG Timoshenko beam under a concentrated transverse harmonic force using the wave propagation approach to obtain the input power flow and transmitted power flow and applying the continuous wavelet transform to deal with the inverse problem of crack identification.…”
Section: Introductionmentioning
confidence: 99%