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Discrete Adjoint Method for the Sensitivity Analysis of Flexible Multibody Systems
Journal of Computational and Nonlinear Dynamics, 2019The gradient-based design optimization of mechanical systems requires robust and efficient sensitivity analysis tools. The adjoint method is regarded as the most efficient semi-analytical method to evaluate sensitivity derivatives for problems involving ...
A. Callejo +2 more
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Computational strategies for flexible multibody systems
Applied Mechanics Reviews, 2003The status and some recent developments in computational modeling of flexible multibody systems are summarized. Discussion focuses on a number of aspects of flexible multibody dynamics including: modeling of the flexible components, constraint modeling, solution techniques, control strategies, coupled problems, design, and experimental studies.
Tamer M Wasfy, Ahmed K Noor
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DYNAMICS OF FLEXIBLE MULTIBODY MECHANICAL SYSTEMS
Transactions of the Canadian Society for Mechanical Engineering, 1991In this paper the formulation and simulation of the dynamical equations of multibody mechanical systems comprising of both rigid and flexible-links are accomplished in two steps: in the first step, each link is considered as an unconstrained body and hence, its Euler-Lagrange (EL) equations are derived disregarding the kinematic couplings; in the ...
X. Cyril, J. Angeles, A. Misra
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Flexibility Effects in Multibody Systems
1994This paper summarizes procedures for studying flexible multibody systems using finite segment modelling. In these procedures flexible members of multibody systems are themselves modelled as multibody (or “lumped”) systems. The flexibility is then modelled by springs and dampers between the bodies.
R. L. Huston, Y. Wang
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Pulse control of flexible multibody systems
Computers & Structures, 1986An active pulse control method is developed to reduce the vibrations of multibody systems resulting from impact loadings. The pulse, which is a function of system generalized coordinates and velocities, is determined analytically using energy and momentum balance equations of the impacting bodies.
Changizi, K., Shabana, A. A.
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Sensivity Analysis of Flexible Multibody Systems
Volume 6: 5th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, Parts A, B, and C, 2005In this work a general formulation for the computation of the first order analytical sensitivities based on the direct method is presented. The direct method for sensitivity calculation is obtained by differentiating the equations that define the response of the flexible system with respect to the design variables.
M. A. Neto, R. P. Leal, J. Ambro´sio
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Multiple Dynamic Response Patterns of Flexible Multibody Systems With Random Uncertain Parameters
Journal of Computational and Nonlinear Dynamics, 2019The mechanisms with uncertain parameters may exhibit multiple dynamic response patterns. As a single surrogate model can hardly describe all the dynamic response patterns of mechanism dynamics, a new computation methodology is proposed to study multiple ...
Zhe Wang, Q. Tian, Haiyan Hu
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Flexible multibody systems: preliminaries
2010Multibody systems are characterized by two distinguishing features: system components undergo finite relative rotations and these components are connected by mechanical joints that impose restrictions on their relative motion. Broadly speaking, multibody systems can be divided into three categories, rigid multibody systems, linearly elastic multibody ...
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Dynamics of general flexible multibody systems
International Journal for Numerical Methods in Engineering, 1990AbstractA general treatment is presented for modelling the dynamics of a flexible multibody system, using a lumped mass finite element approach. The system topology considered here is defined as an arbitrary combination of both rigid and flexible bodies, connected together by joints that permit translation and compliance, in a general tree ...
Han, Ray P. S., Zhao, Zhi Cheng
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Flexible Bodies in Multibody Systems
1998The motion of flexible bodies in multibody systems can be represented in many applications as a superposition of a large reference motion and small deformations, which allows linearisation in the deformation variables. The linearisation procedure requires a careful analysis of geometric stiffening.
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