复杂机构设计中的载荷敏感性分析

The Load Sensitivity Analysis for Complex Linkage Design

设计复杂机构,涉及的载荷种类往往很多,为达成设计目的,每一载荷的敏感性均应进行分析,并完成作用力等效综合。载荷敏感性分析目的是找出机构中对实现功能会造成较大影响的载荷因素,通过作用力等效综合,回答系统在全工作包线内能否满足设计需求,以保证机构功能顺利实现。以某型飞机前起落架机构设计为例,对其运动过程中的各种载荷进行了敏感性分析,再现了实际工作中出现的问题,并提出解决方案,体现了载荷敏感性分析在复杂机构设计中的应用和重要性。

Complex Linkage design must deal with multiplicate loads. The sensitivity of each load must be ana- lyzed, as well as the load equivalent integration. The main cause of sensitive loads shall be discovered by means of sensitivity analysis, the load equivalent integration ensures design function can be achieved. As the example shows, an aircraft nose landing gear cannot be normally and alternatively extended on some conditions during flight test and iron bird test. The load sensitivity analysis and load equivalent integration method are used to reappear and solve the problem. The application and importance of this method for complex linkage design are showed.