主办:陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊:1976年

汽车实用技术 ›› 2023, Vol. 48 ›› Issue (14): 114-118.DOI: 10.16638/j.cnki.1671-7988.2023.014.022

• 测试试验 • 上一篇    

某天然气重卡 LNG 气瓶支架开裂问题 强度疲劳分析

刘红梅,宋旭建,张廷波   

  1. 浙江吉利新能源商用车集团有限公司
  • 出版日期:2023-07-30 发布日期:2023-07-30
  • 通讯作者: 刘红梅
  • 作者简介:刘红梅(1981-),女,硕士,工程师,研究方向为整车性能结构耐久仿真分析,E-mail:liuhm_2012 @163.com。

Fatigue Strength Analysis of a Gas Card LNG Cylinder Bracket Crack

LIU Hongmei, SONG Xujian, ZHANG Tingbo   

  1. Zhejiang Geely New Energy Connercial Vehicles Group Company Limited
  • Online:2023-07-30 Published:2023-07-30
  • Contact: LIU Hongmei

摘要: 针对某天然气重卡车辆耐久试验中液化天然气(LNG)气瓶支架开裂问题,从强度分 析和疲劳分析维度考核该结构的耐久性能,分析问题区域与实车路试结果一致,同时针对存 在的风险进行结构优化后在后续验证中问题得到解决,说明该仿真分析方案的合理性,能够 有效保障该类结构的耐久性能。

关键词: LNG 气瓶支架;振动疲劳;强度分析;载荷谱

Abstract: For the problem of liquefied natural gas (LNG) cylinder support cracked in durability test of a natural gas heavy truck, the durability performance of this structure is evaluated from two dimensions which are strength and fatigue analysis. The problem areas are consistent with the road test results, at the same time, after optimizing the structure for the existing risks, the problem is solved in the subsequent validation. It shows the simulation scheme is reasonable and can effectively guarantee the durability performance of this type of structure.

Key words: LNG cylinder support; Vibration fatigue; Strength analysis; Load spectrum