Letteratura scientifica selezionata sul tema "Homotopy technical"
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Articoli di riviste sul tema "Homotopy technical":
Fegan, H. D., e B. Steer. "Second Order Operators on a Compact Lie Group". Canadian Journal of Mathematics 57, n. 1 (1 febbraio 2005): 99–113. http://dx.doi.org/10.4153/cjm-2005-005-7.
Bhattacharya, Subhrajit, Maxim Likhachev e Vijay Kumar. "Search-Based Path Planning with Homotopy Class Constraints in 3D". Proceedings of the AAAI Conference on Artificial Intelligence 26, n. 1 (20 settembre 2021): 2097–99. http://dx.doi.org/10.1609/aaai.v26i1.8435.
Iwase, Norio. "H-spaces with generating subspaces". Proceedings of the Royal Society of Edinburgh: Section A Mathematics 111, n. 3-4 (1989): 199–211. http://dx.doi.org/10.1017/s0308210500018515.
Fresse, Benoit. "Props in model categories and homotopy invariance of structures". gmj 17, n. 1 (marzo 2010): 79–160. http://dx.doi.org/10.1515/gmj.2010.007.
Editorial, E. "Retraction: Solution of Burgers' equation appears in fluid mechanics by multistage optimal homotopy asymptotic method, doi https://doi.org/10.2298/TSCI23S1087W". Thermal Science, n. 00 (2023): 160. http://dx.doi.org/10.2298/tsci230724160e.
Pym, Brent, e Pavel Safronov. "Shifted Symplectic Lie Algebroids". International Mathematics Research Notices 2020, n. 21 (7 settembre 2018): 7489–557. http://dx.doi.org/10.1093/imrn/rny215.
Chen, Cui, Jiahui Hong e Kai Zhao. "Global propagation of singularities for discounted Hamilton-Jacobi equations". Discrete & Continuous Dynamical Systems 42, n. 4 (2022): 1949. http://dx.doi.org/10.3934/dcds.2021179.
Merkulov, Sergei, e Thomas Willwacher. "Classification of universal formality maps for quantizations of Lie bialgebras". Compositio Mathematica 156, n. 10 (ottobre 2020): 2111–48. http://dx.doi.org/10.1112/s0010437x20007381.
BARNES, DAVID, e CONSTANZE ROITZHEIM. "STABLE LEFT AND RIGHT BOUSFIELD LOCALISATIONS". Glasgow Mathematical Journal 56, n. 1 (25 febbraio 2013): 13–42. http://dx.doi.org/10.1017/s0017089512000882.
XU, BIN. "COMPACT LIE GROUP ACTIONS ON CLOSED MANIFOLDS OF NON-POSITIVE CURVATURE". International Journal of Mathematics 17, n. 01 (gennaio 2006): 119–27. http://dx.doi.org/10.1142/s0129167x06003369.
Tesi sul tema "Homotopy technical":
Koutoati, Kouami. "Modélisation numérique du comportement statique et vibratoire des poutres sandwich viscoélastiques à gradient de propriétés". Electronic Thesis or Diss., Université de Lorraine, 2020. http://www.theses.fr/2020LORR0290.
This thesis proposes a numerical tool for the static and dynamic study of viscoelastic structures made of Functionally Graded Materials (FGM) for vibration control by passive damping. The objective is to make available to engineers a generic code based on the finite element approach for sizing calculations on FGM sandwich beam with viscoelastic core for applications requiring lightness and good thermal and mechanical resistance such as aerospace, automotive and nuclear. To reach this objective we first proposed a numerical model for the static and free vibration study of FGM sandwich beams with elastic behavior. This finite element model is implemented in the Matlab code environment. Using this code, we compare different beam theories for different geometric properties and boundary conditions. Thus, the limit of the classical beam theory in the study of short structures is highlighted. Also with this numerical model, the study of axial-bending and axial-rotation coupling is possible. From this, it is shown that FGM structures are very sensitive to spatial coupling and warping effects because of the non-symmetrical distribution of the material in their cross sections. In the proposed code, the resolution of the vibration problem is possible using classical eigenvalue and eigenvector problem solving methods. Then to introduce passive damping in the FGM sandwich structure, we proposed a sandwich beam model with FGM materials faces and viscoelastic materials core. This model is also implemented in the Matlab language and proposed as a generic tool. The interest of this numerical tool lies in its ability to compute the modal properties as well as the behavior of the viscoelastic FGM sandwich beam while taking into account the frequency dependence of the viscoelastic behavior, the boundary conditions and the axial-bending and axial-rotation coupling specific to FGM materials. The free vibration problem is non-linear in this case due to the material non-linearity induced by the soft layer. In the proposed code, the resolution of this problem is possible thanks to the coupling of the homotopy technical, the asymptotic numerical method and the automatic differentiation. Through this work, the contribution of FGM materials in the improvement of the damping power of structures is highlighted. In the continuation of the work, we propose a finite element formulation to compute the amplitude of forced vibrations of viscoelastic FGM sandwich structures. The resolution of the forced vibration problem is possible by using the bandwidths method. A study on the contribution of FGM materials in the reduction of vibration amplitudes is carried out for different viscoelastic laws. It is proved in this study that by a direct control of the composition gradient of FGM materials it is possible to optimize the damping power of structures even for low frequency modes for which classical composite materials have a damping power requiring improvement
Akoussan, Komlan. "Modélisation et conception de structures composites viscoélastiques à haut pouvoir amortissant". Thesis, Université de Lorraine, 2015. http://www.theses.fr/2015LORR0188/document.
Modeling and design of composite viscoelastic structures with high damping powerThe aim of this thesis is to develop numerical tools to determine accurately damping properties of composite sandwich structures for the design of lightweight viscoelastic sandwichs structures with high damping power. In a first step, we developed a generic tool implemented in Matlab for determining damping properties in free vibration of viscoelastic sandwich plates with laminate faces composed of multilayers. The advantage of this tool, which is based on a finite element formulation, is its ability to take into account the anisotropy of composite layers, the material non-linearity of the viscoelastic core induiced by the frequency-dependent viscoelastic laws and various boundary conditions . The nonlinear complex eigenvalues problem is solved by coupling homotopy technic, asymptotic numerical method and automatic differentiation. Then for the continuous study of a modeling parameter on damping properties of viscoelastic sandwichs, we proposed a generic method to solve the nonlinear residual complex eigenvalues problem which has in addition to the frequency dependence introduced by the viscoelastic core, a modeling parameter dependence that describes a very specific study interval. This resolution is based on asymptotic numerical method, automatic differentiation, homotopy technique and continuation technic and takes into account various viscoelastic laws. We propose after that, two separate formulations to study effects on the damping properties according to two modeling parameters which are important in the design of high viscoelastic sandwichs with high damping power. The first is laminate fibers orientation in the sandwich reference and the second is layers thickness which when they are well defined allow to obtain not only sandwich structures with high damping power but also very light. The highly nonlinear complex eigenvalues problems obtained in these formulations are solved by the new method of resolution of eigenvalue residual problem with two nonlinearity developed before. Comparisons with discrete results and computation time are made to show the usefulness of these two formulations and of the new method of solving nonlinear complex eigenvalues residual problem of two dependances
Capitoli di libri sul tema "Homotopy technical":
Heuts, Gijs, e Ieke Moerdijk. "Kan Conditions for Dendroidal Sets". In Simplicial and Dendroidal Homotopy Theory, 211–61. Cham: Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-10447-3_6.
Zinn-Justin, Jean. "Periodic semi-classical vacuum, instantons and anomalies". In From Random Walks to Random Matrices, 319–34. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198787754.003.0018.
Vadim, Kaloshin, e Zhang Ke. "Normally hyperbolic cylinders at double resonance". In Arnold Diffusion for Smooth Systems of Two and a Half Degrees of Freedom, 106–20. Princeton University Press, 2020. http://dx.doi.org/10.23943/princeton/9780691202525.003.0010.
Atti di convegni sul tema "Homotopy technical":
Tsai, L. W., e J. J. Lu. "Coupler-Point-Curve Synthesis Using Homotopy Methods". In ASME 1989 Design Technical Conferences. American Society of Mechanical Engineers, 1989. http://dx.doi.org/10.1115/detc1989-0154.
Dhingra, A. K., e M. Zhang. "Multiply Separated Synthesis of Six-Link Mechanisms Using Parallel Homotopy With M-Homogenization". In ASME 1998 Design Engineering Technical Conferences. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/detc98/mech-5929.
Subbian, Thiagaraj, e Donald R. Flugrad. "Synthesis of an RSSR-SS Mechanism Using a Continuation Method". In ASME 1992 Design Technical Conferences. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/detc1992-0344.
Dhingra, Anoop K., Jyun-Cheng Cheng e Dilip Kohli. "Complete Solutions to Synthesis of Six-Link, Slider-Crank and Four-Link Mechanisms for Function, Path and Motion Generation Using Homotopy With M-Homogenization". In ASME 1992 Design Technical Conferences. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/detc1992-0308.
Kwak, Sangmin, Youngseo Kim, Sukjoon Pyun e Changsoo Shin. "Frequency‐domain homotopy inversion using the perturbation theory". In SEG Technical Program Expanded Abstracts 2011. Society of Exploration Geophysicists, 2011. http://dx.doi.org/10.1190/1.3627724.
Dhingra, Anoop, Dilip Kohli e Yong-Xian Xu. "Direct Kinematics of General Stewart Platforms". In ASME 1992 Design Technical Conferences. American Society of Mechanical Engineers, 1992. http://dx.doi.org/10.1115/detc1992-0204.
Kwak, Sangmin, Youngseo Kim e Changsoo Shin. "Application of frequency-domain homotopy inversion to real data". In SEG Technical Program Expanded Abstracts 2013. Society of Exploration Geophysicists, 2013. http://dx.doi.org/10.1190/segam2013-0796.1.
Sielemann, Michael, Francesco Casella, Martin Otter, Christoph Clauß, Jonas Eborn, Sven Erik Mattsson e Hans Olsson. "Robust Initialization of Differential-Algebraic Equations Using Homotopy". In The 8th International Modelica Conference, Technical Univeristy, Dresden, Germany. Linköping University Electronic Press, 2011. http://dx.doi.org/10.3384/ecp1106375.
Zhang, W., Y. H. Qian, M. H. Yao e S. K. Lai. "Homotopy Analysis Method for Multi-Degree-of-Freedom Nonlinear Dynamical Systems". In ASME 2010 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/detc2010-28089.
Caro, Stephane, Philippe Wenger e Fouad Bennis. "Robustness Study of Generic and Non-Generic 3R Positioning Manipulators". In ASME 2005 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/detc2005-84903.