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  • 1
    Electronic Resource
    Electronic Resource
    Shape sensitivity analysis of elastic structures by multi-domain boundary element method (1992)
    Springer
    Acta mechanica solida Sinica 5 (1992), S. 35-45 
    Details
    ISSN: 0894-9166
    Keywords: boundary element ; multi-domain ; sensitivity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Based on the direct differentiation of boundary element equations to design variables, an algorithm of the boundary element method which is suitable for the shape sensitivity analysis of serial multi-domain elastic structures is built. By the algorithm, it is not necessary to form and solve the equations for the structure as a whole. Each domain can be solved separately. Two computational examples are presented to demonstrate the accuracy and versatility of the algorithm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02215626
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  • 2
    Electronic Resource
    Electronic Resource
    A modal analysis for the dynamic response of fluid-structure systems (1990)
    Springer
    Acta mechanica solida Sinica 3 (1990), S. 71-79 
    Details
    ISSN: 0894-9166
    Keywords: modal analysis ; fluid-structure interaction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract In this paper a theory of modal analysis for the dynamic response of fluid-structure systems is presented. A pair of generalized eigenvalue equations with three real symmetric matrices and their relationships are derived from the finite element equations in the form of structural displacements and fluid velocity potential. Generalized orthogonality relations of modal vectors are then developed. The response of the system to external excitation is derived in closed form by modal expansion. Two examples of the solution are given for illustration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02205625
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  • 3
    Electronic Resource
    Electronic Resource
    Some applications of boundary element methods, boundary element-finite element coupling techniques in elasto-plastic stress analysis (1990)
    Springer
    Acta mechanica solida Sinica 3 (1990), S. 327-340 
    Details
    ISSN: 0894-9166
    Keywords: boundary element method ; elasticity ; elasto-plasticity ; BE-FE coupling technique ; error estimation of BE solution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract In this paper some research works of author's group on boundary element method for linear elastic and elasto-plastic problems are briefly summarized. The BE subrogions method and BE-FE coupling techniques are introduced, and some idea of the error estimation of BE solutions is presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02206402
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  • 4
    Electronic Resource
    Electronic Resource
    A constitutive model and elastoplastic analysis of structures under cyclic loading (1991)
    Springer
    Acta mechanica solida Sinica 4 (1991), S. 65-74 
    Details
    ISSN: 0894-9166
    Keywords: constitutive model ; elastoplastic analysis ; cyclic loading
    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 constitutive model for cyclic plasticity is briefly outlined. Then the model is implemented in a finite element code to predict the response of cyclic loaded structural components such as a double-edge-notched plate, a grove bar and a nozzle in spherical shell. Comparision with results from other theories and experiments shows that the results obtained by using the present model are very satisfactory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02208111
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  • 5
    Electronic Resource
    Electronic Resource
    A numerical method for coupling three dimensional nonlinear finite elements with elastic boundary elements (1990)
    Springer
    Acta mechanica solida Sinica 3 (1990), S. 155-168 
    Details
    ISSN: 0894-9166
    Keywords: elastoplasticity ; elasto-viscoplasticity ; stability condition ; coupling FEM and BEM
    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 systematically deals with the following three problems: (1) Some numerical schemes in coupling FEM- and BEM: including condensation of the boundary integral equation, symmetrization of equivalent stiffness matrix and treatment of traction discontinuity, (2) Coupling of elastoplastic finite elements to elastic boundary elements, (3) Coupling of elasto-viscoplastic finite elements to elastic boundary elements and numerical stability condition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02207574
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  • 6
    Electronic Resource
    Electronic Resource
    A numerical method for Cauchy principal value of singular integral under parametric transformation in BEM (1991)
    Springer
    Acta mechanica solida Sinica 4 (1991), S. 39-47 
    Details
    ISSN: 0894-9166
    Keywords: singular integral ; boundary element method ; isoparametric element ; finite part of singular integration
    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 numerical method for the Cauchy principal value of the singular integral in BEM is developed using the concept of finite part integration under integral variable transformation. It is applied to the numerical integration on isoparametric element successfully, as shown in the examples in this paper.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02208109
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  • 7
    Electronic Resource
    Electronic Resource
    P-version hybrid analytical finite element method for plate bending problems (1993)
    Springer
    Acta mechanica solida Sinica 6 (1993), S. 401-413 
    Details
    ISSN: 0894-9166
    Keywords: plate bending problems ; generalized variational principle ; p-version refinement ; biharmonic polynomial space ; finite element method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Two sets of trial functions with different variables are constructed for the admissible space of the finite element analysis. The trial functions satisfy the equilibrium differential equation inside elements, while the deflections and rotations on the edges of the elements are approximated by the Peano hierarchical interpolation functions. Then, a generalized variational principle is applied to set up the p-version hybrid analytical finite element method for plate bending problems. The accuracy of finite element computation can be improved by increasing the order of the interpolation polynomials with fixed mesh. In the finite element formulation, to obtain the stiffness matrices and the load vectors, it is only necessary to perform quadrature over the edges of the elements. These matrices and vectors possess an embedding structure. The conformability between the elements can be controlled automatically.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02207731
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