Open Access
ARTICLE
Amirabbas Haidarpour, Kong Fah Tee*
Structural Durability & Health Monitoring, Vol.14, No.1, pp. 1-17, 2020, DOI:10.32604/sdhm.2020.08792
Abstract This paper provides a model updating approach to detect, locate, and characterize damage in structural and mechanical systems by examining changes in measured vibration responses. Research in vibration-based damage identification has been
rapidly expanding over the last few decades. The basic idea behind this technology is
that modal parameters (notably frequencies, mode shapes, and modal damping) are
functions of the physical properties of the structure (mass, damping, and stiffness).
Therefore, changes in the physical properties will cause changes in the modal properties which could be obtained by structural health monitoring (SHM). Updating is a
process fraught with numerical difficulties. These… More >
Open Access
ARTICLE
Hongyi Yan1, Dingguo Zhang1, Liang Li1,*, Xiaoyu Luo2
Structural Durability & Health Monitoring, Vol.14, No.1, pp. 19-36, 2020, DOI:10.32604/sdhm.2020.07457
Abstract The construction of seaside facilities is a hot topic in the field of ocean
engineering. In this paper, a new type of floating breakwater is designed by 3DCAD geometric modeling. Based on the vibration theory and finite element technology, the floating breakwater model is optimized, and the modal analysis of the
structure with the bracket as main body and blades as functional attachments is
carried out. Natural frequencies and mode shapes of the blades are first calculated,
and the effects of the natural frequencies in both dry and wet conditions are taken
into account. Modal analysis and harmonic response analysis… More >
Open Access
ARTICLE
Huajing Guo, Baijian Wu, Zhaoxia Li*
Structural Durability & Health Monitoring, Vol.14, No.1, pp. 37-50, 2020, DOI:10.32604/sdhm.2020.08442
Abstract In order to resolve the safety problem of the existing crane runway girders (CRGs) with defects, the constraint-based R6 criterion is proposed to assess
their structural integrity. The existing steel CRGs with defects at the weld joint
between the upper flange and web plate, are characterized to three-dimensional
finite element models with a semi-ellipse surface crack. The R6 criterion has been
modified by considering the constraint effect which is represented by T-stress. The
analysis results illustrate that working condition of the cracked CRGs leads to
high constraint level along the crack front. The crack aspect ratio (a/c) and runway eccentricity… More >
Open Access
ARTICLE
Meiling Zhuang1,2,3, Changqing Miao1,2,*, Rongfeng Chen1,2
Structural Durability & Health Monitoring, Vol.14, No.1, pp. 51-79, 2020, DOI:10.32604/sdhm.2020.07663
Abstract Taizhou Yangtze River Bridge as a long-span suspension bridge, the
finite element model (FEM) of it is established using the ANSYS Software.
The beam4 element is used to simulate the main beam to establish the “spine
beam” model of the Taizhou Yangtze River Bridge. The calculated low-order
vibration mode frequency of the FEM is in good agreement with the completion
test results. The model can simulate the overall dynamic response of the bridge.
Based on the vehicle load survey, the Monte Carlo method is applied to simulate
the traffic load flow. Then the overall dynamic response analysis of FEM is… More >
Open Access
ARTICLE
Chenxiao Su, Haibei Xiong*
Structural Durability & Health Monitoring, Vol.14, No.1, pp. 81-94, 2020, DOI:10.32604/sdhm.2020.08221
Abstract In order to explore a kind of high-strength, earthquake-resistant, economical and suitable connection, 4 groups of cross-laminated timber wall-to-floor
and wall-to-wall bolted connections were tested under monotonic and cyclic loading. The deformation characteristics and failure modes of the cross-laminated timber wall-to-floor and wall-to-wall bolted connections were exploited. Load-slip
curves, bearing capacity, yielding point, stiffness and ductility of each group of
specimens were analyzed. The test results indicate that the loading process of
cross-laminated timber bolted connections under tension can be categorized as
five stages, namely the elastic stage, the slip stage, the embedding stage, the yielding stage and the ultimate… More >
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