ACQUISITION OF ROAD SPECTRUM BASED ON FEMFAT LAB-ADAMS

FENG JinZhi; ZHENG GuangLei; ZHENG SongLin; ZHAO LiHui; LIANG JunYi

doi:10.16579/j.issn.1001.9669.2019.06.010

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ACQUISITION OF ROAD SPECTRUM BASED ON FEMFAT LAB-ADAMS

更新时间：2022-09-22

- ACQUISITION OF ROAD SPECTRUM BASED ON FEMFAT LAB-ADAMS
- Journal of Mechanical Strength Vol. 41, Issue 6, Pages: 1327-1334(2019)
- 作者机构：
  
  1. 上海理工大学机械工程学院
  2. 机械工业汽车机械零部件强度与可靠性评价重点实验室
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2019.06.010
  CLC：
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FENG JinZhi, ZHENG GuangLei, ZHENG SongLin, et al. ACQUISITION OF ROAD SPECTRUM BASED ON FEMFAT LAB-ADAMS. [J]. 41(6):1327-1334(2019)
DOI：

FENG JinZhi, ZHENG GuangLei, ZHENG SongLin, et al. ACQUISITION OF ROAD SPECTRUM BASED ON FEMFAT LAB-ADAMS. [J]. 41(6):1327-1334(2019) DOI： 10.16579/j.issn.1001.9669.2019.06.010.

摘要

虚拟样机技术的发展使得车辆多体动力学仿真和虚拟疲劳耐久计算成为工程研究的必要手段,而获得可靠有效的路谱则是两种研究手段的前提。运用Femfat LAB-Adams搭建了路谱求解联合仿真平台,根据实车传感器安装位置在多体动力学模型上建立相对应的测点响应通道,以试车场采集的发动机连接点、减震器安装点等处的实测载荷谱为依据,基于虚拟迭代理论计算得到路谱。分别从时域特征、频域特征和损伤计算三方面对监测信号和实测信号进行对比,验证路谱求解的可靠性。结果表明,求解得到的路谱具有较高的可靠性,可以用于车辆多体动力学仿真和虚拟疲劳耐久计算。

Abstract

The development of virtual prototype technology makes the vehicle multi-bod dynamics simulation and virtual fatigue durability calculation become the necessary means of engineering research,and obtaining reliable and effective road spectrum is the premise of the two means. This paper build road spectrum solution joint simulation platform based on FEMFAT LAB-ADAMS,and the response channel is established on the multi-body dynamics model according to the installation position of the actual vehicle sensor. The road spectrum is calculated based on the virtual iteration theory and the real road spectrum of the engine connection point and the shock absorber mounting point. The reliability of the road spectrum solution is verified by comparing the monitoring signal and the measured signal from three aspects of time domain characteristics,frequency domain characteristics and damage calculation. The results show that the reliable road spectrum can be used for vehicle multi-body dynamics simulation and virtual fatigue durability calculation.

关键词

损伤传递函数联合仿真虚拟迭代Femfat LAB-Adams

Keywords

DamageTransfer functionJoint simulationVirtual iterationFemfat LAB-ADAMS

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