Dynamic loads analysis of photovoltaic arrays for the space station
| Autor: | D.A. VanHorn, H.M. Kim, T.S. West |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
business.industry
Mechanical Engineering Process (computing) Stiffness Mechanical engineering Structural engineering Structural dynamics Finite element method Computer Science Applications Stiffening Modeling and Simulation Component (UML) medicine General Materials Science Transient (oscillation) medicine.symptom business Reduction (mathematics) Civil and Structural Engineering Mathematics |
| Zdroj: | Computers & Structures. 63:69-77 |
| ISSN: | 0045-7949 |
| DOI: | 10.1016/s0045-7949(96)00306-9 |
| Popis: | This paper summarizes a study conducted to evaluate the fidelity of structural dynamic models for the space station photovoltaic arrays and determine the effect of model fidelity on the accuracy of on-orbit loads analyses. The array blankets do not possess out-of-plane stiffness, but axial forces from negator springs restrain the movement of blankets in the lateral direction. This geometric stiffening effect allows use of quasi-linear dynamic analysis in generating the linearized component model. Physical description, finite element modeling and component model reduction of the array system are discussed. Theoretical background and physical insights of geometric stiffening are also presented through a simple beam-string model. Case study results with two critical transient loading events show that the math model and analysis process can generate accurate dynamic loads responses for the array. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect