摘要：【中文】本公开涉及航空技术领域，尤其涉及一种镍基单晶气膜冷却涡轮叶片的模拟件的屈曲预测方法。该屈曲预测方法包括：建立模拟件的有限元模型；对有限元模型进行线性屈曲分析，以求解出模拟件的临界失稳载荷；比较临界失稳载荷和模拟件的加载载荷，在加载载荷大于临界失稳载荷时，模拟件产生屈曲。该屈曲预测方法能够预测模拟件是否会出现屈曲失稳，从而为镍基单晶气膜冷却涡轮叶片在拉压疲劳性能的研究提供新的参考依据。 【EN】The disclosure relates to the technical field of aviation, in particular to a buckling prediction method for a simulation piece of a nickel-based single crystal gas film cooling turbine blade. The buckling prediction method comprises the following steps: establishing a finite element model of a simulation piece; carrying out linear buckling analysis on the finite element model to solve the critical instability load of the simulation piece; and comparing the critical buckling load with the loading load of the simulation piece, and buckling the simulation piece when the loading load is greater than the critical buckling load. The buckling prediction method can predict whether buckling instability occurs in a simulation piece, so that a new reference basis is provided for the research on the tensile and compressive fatigue performance of the nickel-based single crystal gas film cooling turbine blade.

摘要：【中文】本发明涉及可靠性评估技术领域，提出一种基于故障机理和多层次信息融合的结构可靠性评估方法。该方法定位结构系统的关键失效部位，并对关键失效部位进行层次分割，分割为组件级单元和组成组件级单元的元件级单元；对每一种元件级单元进行多次可靠性验证实验，得到第一实验数据；对每一种组件级单元进行多次可靠性验证试验，得到第二实验数据；根据组件级单元的组成结构、第一实验数据以及第二实验数据得到组件级单元的可靠性函数；对结构系统进行预设次数的结构可靠性验证试验，得到第三实验数据，并根据结构系统的组成结构、第三实验数据以及组件级可靠性函数得到结构系统最终可靠度。在保证精度较高的同时，减少了成本。 【EN】The invention relates to the technical field of reliability assessment, and provides a structural reliability assessment method based on a fault mechanism and multi-level information fusion. The method positions a key failure part of a structural system, and performs hierarchical segmentation on the key failure part into component level units and element level units forming the component level units; performing multiple reliability verification experiments on each element level unit to obtain first experiment data; performing multiple reliability verification tests on each component level unit to obtain second experimental data; obtaining a reliability function of the component level unit according to the composition structure of the component level unit, the first experiment data and the second experiment data; and performing structural reliability verification tests on the structural system for preset times to obtain third experimental data, and obtaining the final reliability of the structural system according to the composition structure of the structural system, the third experimental data and the component-level reliability function. The cost is reduced while the precision is high.

摘要：【中文】本发明公开了一种在全海深应用的拉线式位移传感器及其应用方法，拉线式位移传感器包括线轮舱、回旋弹簧舱和信号转换舱，所述线轮舱内设置有绕线轮组件，所述轮盘上缠绕有拉线，所述拉线的两端构成拉线端和回线端，所述拉线的拉线端和回线端从轮盘上反向绕出后分别从第一出线孔和第二出线孔伸出至线轮舱外。本发明提供的在全海深应用的拉线式位移传感器及其应用方法，在被测对象返程时，相当于给回线端施加了外力，同回旋弹簧的弹簧力一起作用带动轮盘反向转动，使得拉线端的拉线重新缠绕的轮盘上，拉线端顺利返回到测量原点或指定位置；信号转换舱采用弹性壁的自身变形对外界水压进行自动补偿，解决了拉线式位移传感器在全海深环境下工作的承压问题。 【EN】The invention discloses a stay wire type displacement sensor applied in full sea depth and an application method thereof. When the measured object returns, the pull wire type displacement sensor equivalently applies external force to the loop end and drives the wheel disc to rotate reversely under the action of the spring force of the convolution spring, so that the pull wire at the pull wire end is wound on the wheel disc again, and the pull wire end smoothly returns to the measurement original point or the designated position; the signal conversion cabin adopts the self deformation of the elastic wall to automatically compensate the external water pressure, and solves the pressure bearing problem of the stay wire type displacement sensor working in the full-sea deep environment.