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浏览/检索结果: 共3条，第1-3条 帮助 限定条件 发表日期：2012     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 Lightweight design and analysis of support structure of certain UAV engine (EI CONFERENCE) 会议论文 2012 International Conference on Electrical Insulating Materials and Electrical Engineering, EIMEE 2012, May 25, 2012 - May 27, 2012, Shenyang, Liaoning, China Xing X.; Liu B.; Han X.; Jia H. 收藏  |  浏览/下载：25/0  |  提交时间：2013/03/25 Support structure of UAV (Unmanned Aerial Vehicle) engine is the important support for UAV engine  playing a support role and bearing extremely complex load  so its lightweight  strength and dynamic characteristics have a great influence on high performance of UAV. This paper focuses on UAV having the requirement of high performance and stability to the support structure of engine  and uses the software of MSC.Patran and MSC.Nastran and topology optimization criterion to lightweight design and analysis the support structure of UAV engine under the premise condition of existing constraints. Then the static strength and modal are analyzed for the result of lightweight design  and the strength of the model and dynamic characteristics are verified. (2012) Trans Tech Publications  Switzerland.   流域系统优化调控的新模型与应用 期刊论文 环境科学学报, 2012 郭怀成; 伊璇; 周丰; 陈国贤; 高伟 收藏  |  浏览/下载：5/0  |  提交时间：2015/11/12 模拟优化问题 决策树 不确定性优化 最大日负荷量 流域过程 藻类动力学 Simulation-optimization decision tree optimization under uncertainty total maximum daily load (TMDL) watershed process algea dynamics   Analysis on Load-bearing Characteristics of Supporting System of the Servants and Shallow Tunnel under Asymmetrical Pressure 期刊论文 Journal of Hunan University. Natural Sciences, 2012, 卷号: Vol.39 No.2, 页码: 1-6 作者:  Su Yonghua;  Liang Bin;  Wu Wenguo 收藏  |  浏览/下载：2/0  |  提交时间：2020/01/05 shallow tunnel under asymmetrical pressure  construction environment  equivalent back analysis  load-bearing characteristics