A mixed DOF collocation method for elastic problems in heterogeneous structure
Sign Up to like & getrecommendations! Published in 2019 at "International Journal for Numerical Methods in Engineering"
DOI: 10.1002/nme.6087
Abstract: In this paper, a collocation method with mixed degrees of freedom (DOFs) is proposed for heterogeneous structures. Local tractions of the outer and interface boundaries are introduced as DOFs in the mixed collocation scheme. Then,… read more here.
Keywords: collocation; stiffness matrix; heterogeneous structure; collocation method ... See more keywords
Transient analysis of three‐dimensional dynamic interaction between multilayered soil and rigid foundation
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DOI: 10.1002/nme.6439
Abstract: The study of dynamic soil‐structure interaction is significant to civil engineering applications, such as machine foundation vibration, traffic‐induced vibration, and seismic dynamic response. The scaled boundary finite element method (SBFEM) is a semi‐analytical algorithm, which… read more here.
Keywords: three dimensional; foundation; soil; dynamic stiffness ... See more keywords
The tangent stiffness matrix for an absolute interface coordinates floating frame of reference formulation
Sign Up to like & getrecommendations! Published in 2019 at "Multibody System Dynamics"
DOI: 10.1007/s11044-019-09689-x
Abstract: In this work, a full and complete development of the tangent stiffness matrix is presented, suitable for the use in an absolute interface coordinates floating frame of reference formulation. For simulation of flexible multibody systems,… read more here.
Keywords: stiffness matrix; tangent stiffness; matrix; stiffness ... See more keywords
Exact stiffness matrix of multi-step columns and its application in non-uniform crane structure stability analysis
Sign Up to like & getrecommendations! Published in 2021 at "Journal of the Brazilian Society of Mechanical Sciences and Engineering"
DOI: 10.1007/s40430-021-03077-3
Abstract: To analyze the stability of non-uniform crane structures with stepped and tapered columns, equivalent element stiffness derived from hybrid of the transfer matrix method (TMM) and the finite element method (FEM) is proposed. The second-order… read more here.
Keywords: stiffness; stiffness matrix; matrix; uniform crane ... See more keywords
Updating undamped structural models using displacement output feedback
Sign Up to like & getrecommendations! Published in 2017 at "Applied Mathematical Modelling"
DOI: 10.1016/j.apm.2017.01.056
Abstract: Abstract A novel numerical method for updating stiffness matrix by displacement output feedback technique is presented. The required displacement output feedback gain matrix is determined by the QR-decompositions and the singular value decompositions of matrices,… read more here.
Keywords: stiffness matrix; output feedback; updating undamped; displacement output ... See more keywords
Invariant isogeometric formulation for the geometric stiffness matrix of spatial curved Kirchhoff rods
Sign Up to like & getrecommendations! Published in 2021 at "Computer Methods in Applied Mechanics and Engineering"
DOI: 10.1016/j.cma.2021.113692
Abstract: Abstract This paper presents an invariant isogeometric formulation for the geometric stiffness matrix of spatial curved Kirchhoff rods considering various end moments, i.e., the internal (member) moments and applied (conservative) moments. There are two levels… read more here.
Keywords: stiffness matrix; geometric stiffness; isogeometric formulation; invariant isogeometric ... See more keywords
Stiffness matrix for the analysis and design of partial-interaction composite beams
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DOI: 10.1016/j.conbuildmat.2017.08.154
Abstract: Abstract Compared to the classical Rayleigh-Ritz method and other analytical solutions, finite element (FE) method is more efficient and capable in calculating the deformations and stress states of partial-interaction composite beams, as well as manipulating… read more here.
Keywords: composite beams; stiffness matrix; interaction composite; partial interaction ... See more keywords
Stiffness matrix modification with vibration test data by displacement feedback technique
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Vibroengineering"
DOI: 10.21595/jve.2017.18407
Abstract: A no spill-over method is developed which uses measured normal modes and natural frequencies to adjust a structural dynamics model in light of displacement feedback technique. By the method, the required displacement feedback gain matrix… read more here.
Keywords: stiffness matrix; displacement feedback; feedback technique; feedback ... See more keywords
Sensitivity of beam-column element stiffness matrix to the crack parameters
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Vibroengineering"
DOI: 10.21595/jve.2018.19397
Abstract: In this article, a new cracked beam-column element stiffness matrix is proposed through static condensation method. Seven dimensionless coefficients are introduced and applied for a sensitivity analysis in different damage scenarios. The accuracy of this… read more here.
Keywords: beam column; stiffness matrix; stiffness; crack ... See more keywords
Dynamic Stiffness Matrix Approach to Free Vibration Analysis of Functionally Graded Rotor Bearing System Subjected to Thermal Gradients
Sign Up to like & getrecommendations! Published in 2022 at "Materials"
DOI: 10.3390/ma15041540
Abstract: The dynamic stiffness matrix (DSM) method, an analytical method that provides exact solutions, has been used for the first time for the free vibration analysis of a functionally graded (FG) rotor bearing system subjected to… read more here.
Keywords: bearing system; dynamic stiffness; rotor; rotor bearing ... See more keywords
Reconstruction of Composite Stiffness Matrix with Array-Guided Wave-Based Genetic Algorithm
Sign Up to like & getrecommendations! Published in 2022 at "Materials"
DOI: 10.3390/ma15248715
Abstract: Accurate measurement of the material parameters of composite in a nondestructive manner is of great significance for evaluating mechanical performance. This study proposes to use a genetic algorithm (GA) to reconstruct the stiffness matrix of… read more here.
Keywords: array guided; matrix; genetic algorithm; stiffness matrix ... See more keywords