Structural Damage Identification Using Modal Strain Energy Method

2015 ◽  
pp. 2599-2607 ◽  
Author(s):  
V. B. Dawari ◽  
P. P. Kamble ◽  
G. R. Vesmawala
Keyword(s):  
Energy Method ◽  
Structural Damage ◽  
Strain Energy ◽  
Damage Identification ◽  
Modal Strain Energy ◽  
Modal Strain Energy Method ◽  
Structural Damage Identification ◽  
Strain Energy Method

Damage Identification of Functionally Graded Bernoulli-Euler Beam Based on the Modal Strain Energy Method

2012 ◽  
Vol 253-255 ◽  
pp. 394-398
Author(s):  
Li Xin Huang ◽  
Yue Chen ◽  
Ming Yang ◽  
Xiao Lei Zhang ◽  
Qi Yao
Keyword(s):  
Energy Method ◽  
Strain Energy ◽  
Damage Identification ◽  
Functionally Graded ◽  
Euler Beam ◽  
Modal Strain Energy ◽  
Finite Element Program ◽  
Modal Strain Energy Method ◽  
Element Program ◽  
Strain Energy Method

An algorithm based on modal strain energy method was proposed to identify the existence, the location and the extent of damage for a functionally graded materials (FGMs) Bernoulli-Euler beam. ABAQUS standard finite element program was used for the dynamic analysis of the FGMs Bernoulli-Euler beam. The damage indicator for the damage identification of the FGMs Bernoulli-Euler beam was developed by way of modal strain energy method. A numerical example was given to demonstrate the effectiveness of the proposed algorithm. Numerical results show that the proposed algorithm is effective in identifying the damage for the FGMs Bernoulli-Euler beam.

Study on Damage Identification of Simply Supported-Beam Based on Modal Strain Energy Method

2014 ◽  
Vol 578-579 ◽  
pp. 1204-1207
Author(s):  
Yong Qiang Gu ◽  
Chun Feng Mao
Keyword(s):  
Energy Method ◽  
Strain Energy ◽  
Damage Identification ◽  
Energy Index ◽  
Modal Strain Energy ◽  
Simply Supported Beam ◽  
Simply Supported ◽  
Modal Strain Energy Method ◽  
Analysis Of Results ◽  
Strain Energy Method

In present study, ANSYS finite element method was utilized to analyze the modal of simply supported beam and then the study on damage identification was performed based on modal strain energy method. The comparative analysis of results obtained by modal strain energy changes rate method and modal strain energy index demonstrates that modal strain energy index is an effective damage identification parameter.

Infrastructure Sustainability

2011 ◽  
pp. 186-201
Author(s):  
Hoi Wai Shih ◽  
David Thambiratnam ◽  
Tommy Chan
Keyword(s):  
Energy Method ◽  
Strain Energy ◽  
Health State ◽  
Modal Strain Energy ◽  
Structural Health ◽  
Modal Strain Energy Method ◽  
Modal Flexibility ◽  
Before And After ◽  
Composite Bridges ◽  
Strain Energy Method

Assessing the structural health state of urban infrastructure is crucial in terms of infrastructure sustainability. This chapter uses dynamic computer simulation techniques to apply a procedure using vibration-based methods for damage assessment in multiple-girder composite bridges. In addition to changes in natural frequencies, this multi-criteria procedure incorporates two methods, namely, the modal flexibility and the modal strain energy method. Using the numerically simulated modal data obtained through finite element analysis software, algorithms based on modal flexibility and modal strain energy change, before and after damage, are obtained and used as the indices for the assessment of structural health state. The feasibility and capability of the approach is demonstrated through numerical studies of a proposed structure with six damage scenarios. It is concluded that the modal strain energy method is capable of application to multiple-girder composite bridges, as evidenced through the example treated in this chapter.

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