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| 报告编号 | NASA-TM-87617, NAS 1.15:87617 |
| 来源ID | NTRS_Document_ID: 19860019509 |
| Nonlinear Dynamic Analysis of Deploying Flexible Space Booms | |
| Mcgowan, P. E.; Housner, J. M. | |
| 英文摘要 | A fundamental investigation of the planar deployment and lock-up of two flexible boom type appendages which have attached tip masses and are connected to a central rigid body through a rotational spring is presented. Nondimensional parameters are identified and it is shown that, in general, the solution depends only on two mass ratios and one nondimensional stiffness parameter. Results are presented for boom tip deflections, deployment time and root moments at lock-up. A threshold value of the nondimensional stiffness parameter is identified beyond which boom deflections become large. Also, a thorough examination of the effect of nonlinear terms in the equations governing the deployment phase is performed. Nonlinear terms in the deployment equations due to kinematics and structural deformation are required to predict more accurately boom deflections, but retention of an inconsistent set of nonlinear terms leads to erroneous results. In particular, retaining nonlinear kinematic terms while neglecting nonlinear structural terms can produce inaccurate results even below the threshold stiffness value. |
| 英文关键词 | BOOMS (EQUIPMENT) DEPLOYMENT DYNAMIC STRUCTURAL ANALYSIS FLEXIBLE BODIES KINEMATIC EQUATIONS LARGE SPACE STRUCTURES DEFLECTION DEFORMATION EQUATIONS OF MOTION MASS RATIOS PARAMETER IDENTIFICATION RIGID MOUNTING STIFFNESS MATRIX STRUCTURAL ANALYSIS |
| 出版年 | 1985 |
| 报告类型 | Technical Report |
| 语种 | 英语 |
| 国家 | 美国 |
| URL | http://hdl.handle.net/2060/19860019509 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/259037 |
| 推荐引用方式 GB/T 7714 | Mcgowan, P. E.,Housner, J. M.. Nonlinear Dynamic Analysis of Deploying Flexible Space Booms,1985. |
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