基于虚拟样机的装备故障灵敏度分析及参数阈值获取

作为常规主战陆基武器的火炮，目前在战争中仍然起着不可替代的作用。首先分析了火炮后坐动力学过程和典型故障因素，概括了表征火炮工作性能的三个指标和工作准则。基于ADAMS建立了用于仿真火炮故障的虚拟样机模型，仿真结果与试验数据对比说明了虚拟样机建立的准确性。利用相对灵敏度分析获得各典型故障因素对火炮工作性能指标的影响程度，解决了具有不同量纲的故障因素影响性能指标的比较难题。根据火炮极限射击条件，利用虚拟样机仿真获得了典型故障参数的变化阈值，为火炮预防性维修和精确化保障奠定了基础。最后，展望了下一步工作重点和虚拟样机技术在武器装备仿真领域的应用前景。

Relative Sensitivity Analysis of Typical Faults of Armament and Thresholds Achievement Based on Virtual Prototyping

As conventional land-based military equipment, guns are playing a key role in local wars in recent decades. The typical faults of guns were analyzed, and three indexes to represent guns performance were put forward and three working principles of guns were deduced. Virtual prototype of some-type gun was created by using of ADAMS, and the validation was suggested by comparisons of simulation and test results. The degrees of guns faults affecting performance indexes were obtained based on relative sensitivity analysis, thus the comparison difficulty of fault parameters with different dimensions was solved, and parameter thresholds of guns faults were achieved through virtual prototype according to firing limits of guns Finally, the perspective of virtual prototyping technology applied in fields of armament engineering was presented.