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Study on Damage Identification of Simply Supported-Beam Based on Modal Strain Energy Method Yongqiang Gu1, a, Chunfeng Mao2,b 1Architecture and Civil Engineering School, Inner Mongolia University of Science and technology, Baotou, 014010, China 2Architecture and Civil Engineering School, Inner Mongolia University of Science and technology, Baotou, 014010, China aEmail:guyongqiangbaotou@aliyun.com.cn, bEmail:maochunfeng_chao@163.com Keywords: Bridge; Damage identification; Modal strain energy Abstract.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.
Modal strain energy is a good way and a function of the stiffness and vibration mode.when the damage of certain parts of the structure occurs, it will cause changes in the mechanical properties of materials, showing the loss of local stiffness of the structure , so the damaged area of the modal strain energy will change [4].
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Calculation models The model of conventional seismic building is 9 layers reinforced concrete frame structure, the height is 32.4m, the material is C30 concrete, and the beam-column layout as figure1.
Reinforced concrete beams and columns are equivalent to homogeneous rod units, the floor is equivalent to shell element, the material characteristics mainly on the characteristics of concrete.
Acknowledgment This work was supported by the National Natural Science Foundation of China(51108428), Beijing Nova Program (Z121106002512059)，and research grant from Institute of Geophysics, China Earthquake Administration（DQJB12B28） Reference [1]LI Shuang, XIE Li-li.
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Acknowledgements We are grateful for the financial support by National Natural Science Foundation of China(Grant NO.11274092,11304026and NO.11274091)and Natural Science Foundation of Jiangsu Province (Grant NO.BK20130238),This work also is supported by the Changzhou Science and Technology Support Projects, Changzhou, China(Grant NO.CJ20130008,CE20120080)and the Open Project of Changzhou Key Laboratory of Sensor Networks and Environmental Sensing, Changzhou, China (Grant No. 
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Sakami 1,a, H.Sabhi2,b and R.Ayad2,c 1Equipe de recherche : Génie civil et Géo Ingénierie Faculté des Sciences et Techniques, Université CADI AYYAD B.P 549, Av.Abdelkarim Elkhattabi, Guéliz Marrakech, MAROC 2Laboratoire d’Ingénierie et de Sciences des Matériaux (LISM) Université de Reims Champagne-Ardenne UFR Sciences, Moulin de la Housse, BP 1039, 51687 Reims, France asakami@fstg-marrakech.ac.ma , bhamid.sabhi@univ-reims.fr, crezak.ayad@univ-reims.fr Keywords: Special finite elements, shells, modified Mindlin hypothesises, transverse shear.
A B C D Property materials (en psi) EL=25x106;ET=1x106; υ=0.25 GTT=0.2x106;GLT=0.5x106 Boundary Conditions On AD : U=W=θY=0 Symmetry Conditions On AB : W=θX=θY=0 On BC : V=θX=θZ=0 On CD : U=θY=θZ=0 Figure 3: Simply supported laminated cylinders.
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Surface roughness, however, is a result due to interactions between the workpiece material and the grinding abrasives.
Acknowledgement The authors want to express their gratefulness to the National Kaohsiung First University of Science and Technology for its support on experiments.
This research is also partially supported by the Science-Based Park Project from the National Science Council, Taiwan under contract 98B02.
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Acquisition of the Eye Movement Data Experimental Materials.
Two categories of experimental materials of scenes and histograms were digitized black-and-white images (see Fig.1).
Acknowledgements This work was financially supported by the Beijing Natural Science Foundation (4132023), the China Postdoctoral Science Foundation Funded Project (2012M510298), Projected by Beijing Postdoctoral Research Foundation (2012ZZ-04), and Beijing lab of Intelligent Information Technology (IITLAB11201).
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