We simplified the pipelines of the aircraft ground pressure refueling system to a continuous beam model, analyzed the natural frequency of the pipeline system and its correspondent relation with the fixture interval of pipe hoops. 将飞机压力加油系统管路简化为两端简支的连续梁模型,分析了系统管路固有频率特性以及其与系统导管卡箍固定位置的对应关系。
According to the basic principle of GT and the natural characters of group fixture, providing a kind of coding scheme and the concept of "information encapsulation based on primitive". 前言:根据成组技术基本原理和成组夹具固有特点,建立了一种简单的零件编码机制,提出了“基于体素的工艺信息封装”。
The research on the sensitivity analysis is dealt with of structural natural frequencies to structural design parameters. A typical fixture for vibration test is designed. Using I-DEAS Finite Element programs, the sensitivity of its natural frequency to design parameters is analyzed by Matrix Perturbation Method. 研究了结构固有频率对于结构设计参数的变化率,设计了一个典型的振动试验夹具,利用I-DEAS有限元程序采用矩阵摄动法分析了夹具的固有频率对设计参数的灵敏度。
The comparison between working frequency and safety frequency demonstrates that low order natural frequencies of the fixture box meet the redundant requirement for safety. 对比工作频率和安全频率证明夹具箱体的低阶固有频率满足安全冗余要求;对床身进行了静力分析,结果表明床身满足刚度要求。