NATIONAL BIBLIOGRAPHY NUMBER
Number
۱۸۷۴۳پ
LANGUAGE OF THE ITEM
.Language of Text, Soundtrack etc
per
TITLE AND STATEMENT OF RESPONSIBILITY
Title Proper
مدلسازی عددی انتشار موج برای شناسایی آسیب توسط روش بدونشبک مبتنی بر توابع پایه شعاعی
First Statement of Responsibility
/علی منصوری
.PUBLICATION, DISTRIBUTION, ETC
Name of Publisher, Distributor, etc.
: مهندسی عمران
Date of Publication, Distribution, etc.
، ۱۳۹۶
Name of Manufacturer
، افشاری
NOTES PERTAINING TO PUBLICATION, DISTRIBUTION, ETC.
Text of Note
چاپی
DISSERTATION (THESIS) NOTE
Dissertation or thesis details and type of degree
دکتری
Discipline of degree
مهندس عمران- سازه
Date of degree
۱۳۹۶/۰۴/۲۸
Body granting the degree
تبریز
SUMMARY OR ABSTRACT
Text of Note
.In this research, the numerical modeling of wave propagation, which is used in Structural Health Monitoring (SHM), is studied based on the radial point interpolation method (RPIM) in rod, beam and plate structures. In this method, radial basis functions (RBF) are applied to overcome the problems of polynomial-based point interpolation method such as singularity. More than all, the phenomena of damage propagation can be modelled in meshfree methods as easy as traditional FEM; hence, it is necessary to evaluate the performance of these methods in damaged environments and to evaluate the variables that are effective in the responses. Thus, a reference FE model for healthy and damaged states were defined for bar, beam, and plate. The type of damage in the rod and the beam were considered as a reduction of the cross-section in a given position. For plate model, a crack with given length and the angle were considered in the middle. For each of these structures, RPIM had been developed and the results of the wave propagation analysis are obtained by applying a high-frequency input signal in the time domain to the MATLAB platform. The responses include spatial and temporal signals, which were evaluated by the corresponding responses to the reference model by the Root Mean Square Error (RMSE), Determination Coefficient (R2) and the analytic reflection coefficients.The main parameters that effect the results of wave propagation by the RPIM method are the number of field nodes, the size of support domain, the shape prameters of RBF, the number of polynomials used in the interpolation and the arrangement of Gaussian integration points. These parametrs were dependent on each other and their simultaneous evaluation were difficult and makes the research very complex, so the effect of each parameter was studied under the assumed constant value for other parameters
TOPICAL NAME USED AS SUBJECT
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PERSONAL NAME - PRIMARY RESPONSIBILITY
منصوری،علی
PERSONAL NAME - SECONDARY RESPONSIBILITY
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ELECTRONIC LOCATION AND ACCESS
Public note
۰
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