Knowledge Resource Center for Ecological Environment in Arid Area
| 报告编号 | NASA-CR-166824, NAS 1.26:166824, LMSC-D885405-SS-1633 |
| 来源ID | NTRS_Document_ID: 19830019524 |
| A procedure for combining acoustically induced and mechanically induced loads (first passage failure design criterion) | |
| Crowe, D. R.; Henricks, W. | |
| 英文摘要 | The combined load statistics are developed by taking the acoustically induced load to be a random population, assumed to be stationary. Each element of this ensemble of acoustically induced loads is assumed to have the same power spectral density (PSD), obtained previously from a random response analysis employing the given acoustic field in the STS cargo bay as a stationary random excitation. The mechanically induced load is treated as either (1) a known deterministic transient, or (2) a nonstationary random variable of known first and second statistical moments which vary with time. A method is then shown for determining the probability that the combined load would, at any time, have a value equal to or less than a certain level. Having obtained a statistical representation of how the acoustic and mechanical loads are expected to combine, an analytical approximation for defining design levels for these loads is presented using the First Passage failure criterion. |
| 英文关键词 | LOAD DISTRIBUTION (FORCES) POWER SPECTRA SPACE SHUTTLE PAYLOADS STATISTICAL ANALYSIS EXCITATION FAILURE ANALYSIS SPACE SHUTTLES |
| 出版年 | 1983 |
| 报告类型 | Technical Report |
| 语种 | 英语 |
| 国家 | 美国 |
| URL | http://hdl.handle.net/2060/19830019524 |
| 资源类型 | 科技报告 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/258959 |
| 推荐引用方式 GB/T 7714 | Crowe, D. R.,Henricks, W.. A procedure for combining acoustically induced and mechanically induced loads (first passage failure design criterion),1983. |
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