装甲车防雷座椅抗冲击试验的测试与数据分析方法

Measurement and data analysis of anti-impact tests for armored vehicle lightning seats

针对已有台架试验方法,在分析座椅抗冲击性能的特点和试验中关键参数的测试的基础上,提出了试验测试系统构建、关键参数测试与数据分析方法,对输入冲击加速度、座椅缓冲位移和假人动态响应指数(Dynamic Response Index for Z-axis,DRIz)等关键参数提出了相应的测试方法与数据分析方法。对于输入冲击加速度测试,验证了测试位置和输入波形分析方法,对试验数据的有效性非常关键。针对座椅缓冲位移的测试,采用高速摄像拍摄视频与图像辅助计算的方式,获得位移曲线,综合分析压缩量和反弹量所反映的座椅性能;DRIz通过建立人体骨盆处的运动方程,通过假人骨盆的加速度值间接计算获得,并对其滤波频率进行了研究与分析。试验数据表明,提出的装甲车防雷座椅抗冲击试验测试与数据分析方法直观、有效。

Based on the existing bench test methods,this paper proposes test measurement system construction,key parameter tests and data analysis methods on the basis of analyzing the characteristics of the anti-impact of armored vehicle lightning seats and the testing of the key parameters in the experiment.Methods of data measurement and data analysis are given for key parameters,including input impact acceleration,seat buffer displacement and Dynamic Response Index for Z-axis(DRIz).Firstly,for the measurement of input impact acceleration,the measurement place and the input waveform analysis method are illustrated,which are key to the validity of the test data.Then,for the seat buffer displacement testing,the methods of high-speed video shooting and image auxiliary calculation are used,and then the displacement curve is obtained,which is used to comprehensively analyze the seat performance in response to compression and rebound.Based on the motion equation of human pelvic,DRIz is obtained by indirectly calculating the acceleration of the dummy pelvis,and filter frequency of the acceleration is discussed.The test data show that the proposed anti-impact tests and data analysis methods for armored vehicle lightning seats are intuitive and effective.