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- 航空用线位移传感器设计及典型故障模式分析
- 作者： 张乔 田飞越 徐伟 杜昕鲲 来源： 科技创新与应用 年份： 2025 文献类型 ： 期刊 关键词： 仿真 集成电气信号 复合式 线位移传感器 涡卷弹簧
- 描述： 航空用线位移传感器设计及典型故障模式分析
- 飞机货舱复合烟雾探测方法研究
- 作者： 张文杰 来源： 中国民航大学 年份： 2019 文献类型 ： 学位论文 关键词： 火灾探测 双波长 飞机货舱 模式识别 复合式 遗传神经网络
- 描述： 飞机货舱复合烟雾探测方法研究
- 飞机座舱环境空气质量检测技术研究
- 作者： 田吉磊 来源： 中国民航大学 年份： 2020 文献类型 ： 学位论文 关键词： 模糊综合评价 RBF神经网络 空气质量检测 飞机座舱 气压补偿 复合式
- 描述： 飞机座舱环境空气质量检测技术研究
- 飞机货舱复合烟雾探测方法研究
- 作者： 张文杰 来源： 中国民航大学 年份： 2019 文献类型 ： 学位论文 关键词： 火灾探测 双波长 飞机货舱 模式识别 复合式 遗传神经网络
- 描述： 飞机货舱复合烟雾探测方法研究
- 飞机座舱环境空气质量检测技术研究
- 作者： 田吉磊 来源： 中国民航大学 年份： 2020 文献类型 ： 学位论文 关键词： 模糊综合评价 RBF神经网络 空气质量检测 飞机座舱 气压补偿 复合式
- 描述： 飞机座舱环境空气质量检测技术研究
- 航空发动机零部件焊接过程仿真
- 作者： 唐心武 来源： 北京航空航天大学 年份： 2016 文献类型 ： 学位论文 关键词： 焊接 仿真
- 描述： Welds are often an essential part of aero space engineering structures. Residual stresses introduced in the welded regions, due to the nonlinear thermal processes during welding, can have detrimental effects, such as stress corrosion cracking, hydrogen-induced cracking and reduced fatigue strength. It is therefore pertinent to simulate the process of welding to predict the behaviour of welded structures from finite element residual stress and deformation result. The base metal is Nickel based-supper alloy (INCONEL Alloy 718) of thin combustion chamber outer casing (CCOC). The simulations are performed with the commercial software SYSWELD+, which includes moving heat sources, material deposit, metallurgical properties, metal plasticity and elasticity, transient heat transfer and mechanical analyses. One-way thermo-mechanical coupling is assumed, which means that the thermal analysis is completed first, followed by a separate mechanical analysis based on the thermal history.This paper introduces finite element methods for the modeling of welds and it depicts a brief history of the simulation of welds. The processes, procedures, and metallurgy of gas-metal arc welding of nickel based alloy are presented in Chapter 2. In Chapter 3, the previous finite element analyses of welding are reviewed. The energy and constitutive equations governing a welding simulation are outlined in Chapter 4, while performing welding simulations utilizing the SYSWELD+ software is described in Chapter 5. The residual stress results for outer combustion casing are reported in Chapter6. The conclusion is described in chapter 7.Welding simulations to predict residual stress states require three-dimensional analysis in the vicinity of the joint and these analyses are computationally intensive and difficult. Although the state of the art in welding simulations using finite elements is improve as an advanced method.
- 航空发动机零部件焊接过程仿真
- 作者： 唐心武 来源： 北京航空航天大学 年份： 2016 文献类型 ： 学位论文 关键词： 焊接 仿真
- 描述： Welds are often an essential part of aero space engineering structures. Residual stresses introduced in the welded regions, due to the nonlinear thermal processes during welding, can have detrimental effects, such as stress corrosion cracking, hydrogen-induced cracking and reduced fatigue strength. It is therefore pertinent to simulate the process of welding to predict the behaviour of welded structures from finite element residual stress and deformation result. The base metal is Nickel based-supper alloy (INCONEL Alloy 718) of thin combustion chamber outer casing (CCOC). The simulations are performed with the commercial software SYSWELD+, which includes moving heat sources, material deposit, metallurgical properties, metal plasticity and elasticity, transient heat transfer and mechanical analyses. One-way thermo-mechanical coupling is assumed, which means that the thermal analysis is completed first, followed by a separate mechanical analysis based on the thermal history.This paper introduces finite element methods for the modeling of welds and it depicts a brief history of the simulation of welds. The processes, procedures, and metallurgy of gas-metal arc welding of nickel based alloy are presented in Chapter 2. In Chapter 3, the previous finite element analyses of welding are reviewed. The energy and constitutive equations governing a welding simulation are outlined in Chapter 4, while performing welding simulations utilizing the SYSWELD+ software is described in Chapter 5. The residual stress results for outer combustion casing are reported in Chapter6. The conclusion is described in chapter 7.Welding simulations to predict residual stress states require three-dimensional analysis in the vicinity of the joint and these analyses are computationally intensive and difficult. Although the state of the art in welding simulations using finite elements is improve as an advanced method.
- 舰载无人机弹射杆操纵系统设计与仿真
- 作者： 张晓娟 何泳 王山 史金辉 来源： 液压与气动 年份： 2020 文献类型 ： 期刊 关键词： 舰载无人机 泄漏 仿真 弹射杆操纵系统
- 描述： 液压源及弹射杆收放系统仿真模型,模拟了无人机机上往复车对弹射杆施加的载荷,对系统功能和性能进行了仿真,分析了泄漏对弹射杆收放性能的影响,通过仿真验证弹射杆收放过程的平稳性及快速性,系统设计合理有效,满足设计要求。