导弹前定向件公路机动运输疲劳载荷谱的编制及寿命预估

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (9) : 88-93.

论文

商霖1,张海瑞1,李璞1,2

作者信息 +

Compilation of fatigue load spectrum and life estimation for missile front-sliders in road motorized transport environment#br#

SHANG Lin1, ZHANG Hairui1, SONG Jianqiang1,2

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文章历史 +

摘要

为研究导弹前定向件在公路机动运输环境下疲劳载荷谱的编制方法，选定跑车试验场内标准路面（含鱼鳞路、波形路、卵石路和碎石路及高速路等）进行某型号试验场机动运输试验并实地采集所需信号。根据实测数据的时、频域分析结果，编排试验场机动运输试验流程，组成具有代表性的载荷样本数据，这些数据包含了型号战标要求的不同路面及其占比、不同车速及其占比和刹车、过路障等特殊工况。利用雨流计数法对试验场机动运输试验所得数据进行循环计数，根据参数外推法将循环计数外推至目标里程，进而编制出供设计分析使用的载荷设计谱和试验评估使用的疲劳试验谱。采用试验谱对导弹前定向件进行疲劳加载，验证了产品在寿命期内能够可靠的使用，并且可以延寿三倍以上。该方法可以有效地预估前定向件内部润滑涂层的磨损寿命，为产品的改进设计和同类问题的解决提供了参考。

Abstract

In order to study the fatigue load spectrum of the front-slider in load maneuvering environment, we select the standard surface of the roadster to develop the test and collect the required signals, which include the scale-hole pavement, waveform pavement, cobblestone pavement and gravel pavement et al. According to the time domain and frequency domain analysis of the measured data, we program the roadster process and compose the representative load sample data, which include the different pavement and its proportion, the different speed and its proportion, and the special working conditions such as braking and barricade. The test data was counted by the method of rain flow counting, and extrapolation was carried out to the target range, and then the load design spectrum and the fatigue test spectrum were complied. The test spectrum is used for the fatigue loading of the front sliding block and the product can be used reliably in the life span, and it can be extended more than three times. This method can effectively predict the wear life of the internal lubrication coating of the front-slider, and provides the references for improving the design of the product and solving similar problems.

Key words

front-slider / lubrication coating / fatigue durability / Load spectrum compilation / fatigue life prediction

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商霖1,张海瑞1,李璞1,2. 导弹前定向件公路机动运输疲劳载荷谱的编制及寿命预估[J]. 振动与冲击, 2019, 38(9): 88-93

SHANG Lin1, ZHANG Hairui1, SONG Jianqiang1,2. Compilation of fatigue load spectrum and life estimation for missile front-sliders in road motorized transport environment#br#[J]. Journal of Vibration and Shock, 2019, 38(9): 88-93

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