Dynamic Analysis of Truss‐Beam System |
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Authors: | Elias G Abu‐Saba William M McGinley Raymond C Montgomery |
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Affiliation: | 1Assoc. Prof. of Architectural Engrg., North Carolina A & T State Univ., Greensboro, NC 27411
2Asst. Prof. of Architectural Engrg., North Carolina A & T State Univ., Greensboro, NC
3Aerospace Technologist, NASA Langley Res. Ctr.∕161 Hampton, VA 23665
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Abstract: | As the manned exploration of space continues, many complex structural components are being developed to construct the orbital platforms that will be used to house communication hardware, personnel, and manufacturing complexes. These components are extremely flexible and complex in their behavior. There is a need for a simple method for determining the dynamic characteristics of these space structures with a minimum of effort. A mathematical model of one of these structural elements, an articulating truss beam, has been developed to predict its dynamic response. Assumptions of the force interaction between the beam elements and the joints have been made for using this model. Algorithms are provided to determine the flexibility matrix of the truss beam for use in the equation of motion. The natural frequencies obtained from using this method are compared with those obtained by the finite element method. An experimental procedure is planned to validate the results from the theoretical method. |
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Keywords: | Space structures Beams Trusses Dynamics Mathematical models Structural elements |
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