Study of load spectrum compilation method for the pantograph upper frame based on multi-body dynamics

Mei, Guiming; Luo, Qun; Qiao, Weiyang; Huang, Zhong; Lu, Junyan; Wang, Jiangwen

doi:10.1016/j.engfailanal.2022.106099

Cited by 17 publications

(7 citation statements)

References 20 publications

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“…The tooth surfaces of the two gears are defined as the surface groups (Patch sets) in advance. When setting the contact, two surface groups are directly selected as the contact surface, which can be easily operated [7,8].…”

Section: Figure 2 Flexible Body Gear Modelmentioning

confidence: 99%

Flexible gear modeling and stress spectrum compilation of an artillery steering machine

Fang

Yang

2023

J. Phys.: Conf. Ser.

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To solve the load data lack problems when researching the fatigue life prediction of artillery steering machines, the flexible body model of an artillery steering gear was established using the recurdyn/fflex, based on the finite element flexible body theory. The complete artillery adjustment process of the steering gear was simulated and calculated, and the dynamic stress change of the gear under variable load conditions was obtained. Eight-level stress spectrum was compiled based on the rain flow counting method, which provides the load data basis for the subsequent reliability design and fatigue life research.

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Section: Figure 2 Flexible Body Gear Modelmentioning

confidence: 99%

Flexible gear modeling and stress spectrum compilation of an artillery steering machine

Fang

Yang

2023

J. Phys.: Conf. Ser.

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“…, 2020; Lehner et al. , 2016; Mei et al. , 2022), each equivalent cycle should follow the criterion of three or four points and only three or four points could be checked each time.…”

Section: Introductionmentioning

confidence: 99%

“…By this means, this algorithm creatively solved the problem of fatigue life estimation for random loadings by the special numerical counting method for data sequences. In this special algorithm (Dowling, 1972;Socie, 1977Socie, , 1992Marsh et al, 2016;Hammad and Moustafa, 2020;Tarpø et al, 2020;Lehner et al, 2016;Mei et al, 2022), each equivalent cycle should follow the EC 40,1…”

Section: Introductionmentioning

confidence: 99%

One-stage extraction four-point algorithm for rainflow cycle counting in fatigue life estimation

Huang

Luo

et al. 2023

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PurposeIn order to improve the computation efficiency of the four-point rainflow algorithm, a one-stage extraction four-point rainflow algorithm is proposed based on a novel data preprocessing method.Design/methodology/approachIn this new algorithm, the procedure of cycle counting is simplified by introducing the data preprocessing method. The high efficiency of new algorithm makes it a preferable candidate in fatigue life online estimation of structural health monitoring systems.FindingsAccording to the data preprocessing method, in the process of cycle extraction, all equivalent cycles can be extracted at just one stage instead of two stages in the four-point rainflow algorithm, where the cycle extraction has to be performed from the doubled residue. Besides, there are no residues in the new algorithm. The extensive numerical simulation results demonstrate that the accuracy of new algorithm is the same as that of the four-point rainflow algorithm. Moreover, a comparative study based on a long input data sequence shows that the computation efficiency of the new algorithm is 42% higher than that of the four-point rainflow algorithm.Originality/valueThis merit of new algorithm makes it preferable in some application scenarios where fatigue life estimation needs to be accomplished online based on massive measured data. And it may attribute to preprocessing of input data sequence before data processing, which provides beneficial guidance to improve the efficiency of existing algorithms.

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“…Recently, relevant scholars have proposed many compiling methods for accelerated editing. Mei et al 13 established a pantograph-catenary system model to obtain random load spectrums, then proposed an accelerated editing method based on the equivalent damage rule. Lei et al 14 proposed an accelerated fatigue test method based on the kurtosis transfer law of random loads.…”

Section: Introductionmentioning

confidence: 99%

Accelerated durability evaluation of automotive components under multi-channel random loading

Zhou

2023

Proceedings of the Institution of Mechanical Engineers, Part D:

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Accelerated durability evaluation aims to quantify the fatigue damage of automotive components in a shorter time. The quality of accelerated editing directly affects the evaluation’s efficiency and accuracy. In this paper, an index-controlled accelerated spectrum editing method is proposed, and the equivalent fatigue damage model of the component is derived. Taking an automotive steering knuckle as the verification object, the proposed accelerated editing method is evaluated from multiple perspectives. The evaluation results show that the proposed method has apparent advantages in compression efficiency, damage consistency, and retaining the frequency domain impact on the component.

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Study of load spectrum compilation method for the pantograph upper frame based on multi-body dynamics

Cited by 17 publications

References 20 publications

Flexible gear modeling and stress spectrum compilation of an artillery steering machine

Flexible gear modeling and stress spectrum compilation of an artillery steering machine

One-stage extraction four-point algorithm for rainflow cycle counting in fatigue life estimation

Accelerated durability evaluation of automotive components under multi-channel random loading

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