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Rüdiger Schmidt

Bio: Rüdiger Schmidt is an academic researcher from RWTH Aachen University. The author has contributed to research in topics: Finite element method & Shell (structure). The author has an hindex of 21, co-authored 82 publications receiving 1060 citations.


Papers
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Journal ArticleDOI
TL;DR: A linear electro-mechanically coupled finite element (FE) model for composite laminated thin-walled smart structures bonded with orthotropic MFCs having arbitrary piezo fiber orientation was developed in this paper.

85 citations

Journal ArticleDOI
TL;DR: In this paper, a general linear theory of laminated composite anisotropic shells of arbitrary shape and curvature is presented, in which the effect of the interfacial damage induced by the imperfect bonding between the constituent laminae is incorporated.

78 citations

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TL;DR: In this paper, an electro-mechanically coupled finite element (FE) model of smart structures is developed based on first-order shear deformation (FOSD) hypothesis, and a PID control is implemented to damp both the free and forced vibrations.

61 citations

Journal ArticleDOI
TL;DR: In this article, the relevance of the five and six-parameter variants of the FOSD hypothesis for large rotation plate and shell problems was discussed, and it was shown that the assumption of constant through-thickness distribution of the transverse normal displacements is acceptable only for small and moderate rotation problems.
Abstract: The paper deals with the geometrically non-linear analysis of laminated composite beams, plates and shells in the framework of the first-order transverse shear deformation (FOSD) theory. A central point of the present paper is the discussion of the relevance of five- and six-parameter variants, respectively, of the FOSD hypothesis for large rotation plate and shell problems. In particular, it is shown that the assumption of constant through-thickness distribution of the transverse normal displacements is acceptable only for small and moderate rotation problems. Implications inherent in this assumption that are incompatible with large rotations are discussed from the point of view of the transverse normal strain–displacement relations as well as in the light of an enhanced, accurate large rotation formulation based on the use of Euler angles. The latter one is implemented as an updating process within a Total Lagrangian formulation of the six-parameter FOSD large rotation plate and shell theory. Numerical solutions are obtained by using isoparametric eight-node Serendipity-type shell finite elements with reduced integration. The Riks–Wempner–Ramm arc-length control method is used to trace primary and secondary equilibrium paths in the pre- and post-buckling range of deformation. A number of sample problems of non-linear, large rotation response of composite laminated plate and shell structures are presented including symmetric and asymmetric snap-through and snap-back problems.

60 citations

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TL;DR: Hybrid composite pyramidal truss sandwich panels combined with multiple damping configurations are fabricated in this article to investigate the damping and stiffness efficiency of the candidate structures, and experimental results show that such structures combined with damping materials would significantly improve damping loss efficiency but decrease simultaneously the stiffness efficiency in varying degrees compared with the bare hybrid sandwich panels.

55 citations


Cited by
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Journal ArticleDOI
01 Jan 1906

935 citations

01 Jan 1952

748 citations

Journal Article
TL;DR: In this paper, the result of the PtSi nanometer thin film based on silicon prepared by the pulsed laser deposition was described and the physical principle, unique characteristics and the proceeding of the study were introduced briefly.
Abstract: The pulsed laser deposition is a new technique for the growth of thin films,which has been attended generally by people recently The physical principle, unique characteristics and the proceeding of the study were introduced briefly In addation, the result of the PtSi nanometer thin film based on silicon prepared by the pulsed laser deposition was describedPULS

392 citations

Journal ArticleDOI
TL;DR: A review of the state-of-the-art in the area of dynamic analysis of composite shells can be found in this article, where the main aim is to provide a broad perspective of the current state of the art in this field.

364 citations

Journal Article
Y.X. Wang, Z.Y. Pan, Y.K Ho, Yadong Xu, Aijun Du 
TL;DR: In this article, the impact-induced deposition of Al13 clusters with icosahedral structure on Ni(0 0 1) surface was studied by molecular dynamics (MD) simulation using Finnis-Sinclair potentials.
Abstract: The impact-induced deposition of Al13 clusters with icosahedral structure on Ni(0 0 1) surface was studied by molecular dynamics (MD) simulation using Finnis–Sinclair potentials. The incident kinetic energy (Ein) ranged from 0.01 to 30 eV per atom. The structural and dynamical properties of Al clusters on Ni surfaces were found to be strongly dependent on the impact energy. At much lower energy, the Al cluster deposited on the surface as a bulk molecule. However, the original icosahedral structure was transformed to the fcc-like one due to the interaction and the structure mismatch between the Al cluster and Ni surface. With increasing the impinging energy, the cluster was deformed severely when it contacted the substrate, and then broken up due to dense collision cascade. The cluster atoms spread on the surface at last. When the impact energy was higher than 11 eV, the defects, such as Al substitutions and Ni ejections, were observed. The simulation indicated that there exists an optimum energy range, which is suitable for Al epitaxial growth in layer by layer. In addition, at higher impinging energy, the atomic exchange between Al and Ni atoms will be favourable to surface alloying.

289 citations