基于橡胶衬套的多轴载荷自动化疲劳试验谱研究

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中图分类号：U461.71 文献标志码：B DOI：10.19710/J.cnki.1003-8817.20250220

Multi-Axis Block Spectrum Method Research Based on Bushing DurabilityTest

Tao Xinyang，Li Jinling，Wang Xiangjun，Fan Xue，Liu Yuan，Han Wenbin （BYDAuto Industry CompanyLimited，Shenzhen518118）

Abstract：To improve theaccuracy and efficiency of automotive component durability tests and addressthe issue thatuniaxialload spectracannottrulyreflectthemultiaxial stressstate，this studyproposesamultiaxial programblock spectrumcompilation method basedon multiaxial rainflow projectionand Miner’s linear cumulative damage theory， and achieves process automation using the Python development environment.Takingthe steering arm rubber bushing of acertainvehicle model astheresearch object，verificationsconducted through bench testsandfiniteelement simulations.Theresultsshow thatthemultiaxial program block spectrum is highlyconsistent with theroadtestresults intermsofdamagelocationanddamagedegree，caneffectivelyreproducemultiaxialfatiguedamage，andsignificantly shortens the testandcalculation time，providingan eficient andreliable load input solution forcomponent-level multiaxial durabilitytests.

KeyWords：Multiaxial block spectrum，Durability，Bushing，Multiaxial rainflow，Damage

1前言

随着汽车行业竞争日益激烈，产品迭代速度加快，对开发周期提出了更高要求。（剩余6608字）