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  • 1
    ISSN: 0894-9166
    Keywords: fluid-structure impact ; finite element method ; boundary element method ; coupled vibration
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract A mixed method of arbitrary Lagrangian-Eulerian boundary element and finite element method (ALE-BE-FE method) is proposed for solving fluid-structure impact problems, in which the effect of structural deformation due to hydrodynamic pressure is taken into account. In addition, this method also enables us to analyze the influence of nonlinear free surface conditions on the impact response. Two numerical examples of an impacting cylinder and an impacting wedge into an initially calm water treated as 2-D problems are presented. It shows that the proposed method is effective to obtain a fluid-structure impact solution.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Acta mechanica solida Sinica 3 (1990), S. 287-299 
    ISSN: 0894-9166
    Keywords: wet mode ; coupled vibration ; liquid container
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract This paper deals with the following two problems. One is the proof of the general orthogonality relations of wet modes for cylindrical liquid containers, and the other is the analysis of responses of this kind of structures under arbitrary excitations by using wet modal expansion.
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  • 3
    ISSN: 1573-4927
    Keywords: CATTLE ; MITHAN ; BOS FRONTALIS ; SOUTH CHINA ; BLOOD PROTEIN ELECTROPHORESIS ; GENETIC ; DIVERSITY
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Genetic variation of 31 blood protein loci in236 cattle from eight South China populations (includingmithan, Bos frontalis) and a Holstein population wasinvestigated by means of horizontal starch gel electrophoresis. Thirteen loci (ALB, CAR, Hb-b,Np, PGM, Amy-I, PEP-B, AKP, 6PGD, Cp, Pa, EsD, and TF)were found to be polymorphic. The comparison of averageheterozygosities (H) shows that all the native cattle embrace a rich genetic diversity. Ourresults on protein polymorphism suggest that cattle inChina originated mainly from Bos indicus and Bos taurus;Xuwen, Hainan, Wenshan, and Dehong cattle and the Dehong zebu are close to zebu-type cattle,and Diqing and Zhaotong cattle are close to the taurine.The mithan was very different from other native cattle,and we suggest that its origin was complicated and may be influenced by other cattlespecies.
    Type of Medium: Electronic Resource
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