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Showing 1 to 12 of 12 for “"component mode synthesis"”.
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Non-linear dynamic modeling using component mode synthesis
… all operational environments. Rigid body dynamic modeling techniques can be utilized to simulate mechanisms that experience small loads relative to the strength of the piece parts with movement that primarily occurs as rigid body motion. The main advantage of a rigid body dynamic approach is that …
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Experimental component mode synthesis of structures with joint freeplay
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1988.
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An evaluation of component mode synthesis for modal analysis of finite element models
Component mode synthesis (CMS) is a condensation method for vibration analysis which preserves the low frequency vibrational characteristics of a structure. In this method, the structure is treated as an assemblage of components whose displacements are described in terms of component modes. These …
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Two-step Component Mode Synthesis with convergence for the eigensolution of large-degree-of-freedom systems
Component Mode Synthesis (CMS) is a dynamic substructuring technique for the approximate eigensolution of large-degree-of-freedom (dof) systems divisible into two or more components. System synthesis using component modes results in approximate eigenparameters; in general, using more component …
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An approach to dynamics and control of flexible space structure
… fundamentally different approaches of system and component modes synthesis. Versatility of the formulation is demonstrated, through its application to two systems of contemporary interest,in the presence of nonlinear control: (i) Space station based, two-arm mobile, flexible manipulator; (ii) NASA …
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Finite element modeling of a refrigeration compressor for noise prediction applications
… involves the development of a finite element model of a hermetic reciprocating compressor for noise prediction applications. Inherent difficulties in developing the finite element model of a complicated structure are discussed and appropriate modeling strategies are evolved. The development of …
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Modeling and control of flexible structures
… is concerned with some topics in the modeling and control of large flexible structures. In the finite element convergence toward the natural modes and frequencies of a structure, it is found that two mechanisms limiting the accuracy of higher modes are, first, a decrease in the number …
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Modelling approaches for the low-frequency analysis of built-up structures with non-deterministic properties
… the finite element method, where deterministic models with one particular set of physical parameters are employed. However, the underlying assumption that the input data is precisely known is in general not valid, because there are uncertainties about the parameters, often until the last stage …
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A substructure synthesis formulation for vibration isolation
The new modeling method presented here is classified as a substructure synthesis (SS) technique. The distinction between the new SS method and the component mode synthesis formulation is that no transformation between local coordinates and generalized coordinates occurs in the new SS method. The …
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Vibrations in lightweight structures - Efficiency and reduction of numerical models
… is to develop such tools by means of numerical models. Accurately assessing the dynamic behaviour of multi-storey wood buildings requires use of models representing the geometry in considerable detail, resulting in very large models which easily exceed the limits of computer capacity, at least …
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Space Launch Environment and Vibration Testing
… or tri-axis shaker testing. Different spacecraft models were investigated through transient, random and shock response analysis to quantify the degree of over-testing and conclude that at least twice the base input was needed through sequential single-axis testing to envelop simultaneous tri-axis …