Analysis of Vibration Stress in Aluminum Electrolytic Capacitors Under Different Mounting Configurations

LI Sheng; XIE Yuting; HUANG Yuanbin; WANG Zhichao; PENG Jinlin; CAO Yanqing; JIANG Dongchu

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Analysis of Vibration Stress in Aluminum Electrolytic Capacitors Under Different Mounting Configurations

更新时间：2026-07-21

- Analysis of Vibration Stress in Aluminum Electrolytic Capacitors Under Different Mounting Configurations
- Electronic Product Reliability and Environmental Testing Pages: 1-7(2026)
- 作者机构：
  
  1.湖南艾华集团股份有限公司，湖南益阳 413000
  2.湖南城市学院全固态储能材料与器件湖南省重点实验室，湖南益阳 413000
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN 603
- Received：27 March 2025，
  
  Revised：2026-05-20，
  
  Accepted：25 May 2026，
  
  Online First：03 July 2026，
- 稿件说明：
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李胜,谢玉婷,黄远彬等.铝电解电容器不同安装方式下振动应力分析^★[J].电子产品可靠性与环境试验,DOI:10.3969/j.issn.1672-5468...001.

LI Sheng,XIE Yuting,HUANG Yuanbin,et al.Analysis of Vibration Stress in Aluminum Electrolytic Capacitors Under Different Mounting Configurations[J].Electronic Product Reliability and Environmental Testing,
李胜,谢玉婷,黄远彬等.铝电解电容器不同安装方式下振动应力分析^★[J].电子产品可靠性与环境试验,DOI:10.3969/j.issn.1672-5468...001. DOI：

LI Sheng,XIE Yuting,HUANG Yuanbin,et al.Analysis of Vibration Stress in Aluminum Electrolytic Capacitors Under Different Mounting Configurations[J].Electronic Product Reliability and Environmental Testing, DOI：10.3969/j.issn.1672-5468...001.

摘要

在车载电源及工业振动环境中，铝电解电容器引脚易因惯性载荷作用产生应

力集中并发生断裂。为分析不同安装方式对振动结构响应的影响，采用等效加速度法建立铝电解电容器—印刷电路板组合结构三维有限元模型，在

、

方向分别施加10

等效加速度，研究铝电解电容器直插竖放与卧式横放2种安装形式在打胶与未打胶条件下的引脚应力分布特征。结果表明，2种安装方式均存在明显方向敏感性，且主导受力方向不同：未打胶条件下，卧式结构整体应力水平高于直插结构，引脚根部及弯折过渡区域为主要高应力部位；使用电子白胶固定后，各工况下最大等效应力均出现数量级下降，应力集中显著减弱。研究表明，通过改变力臂长度及载荷传递路径的安装方式，能显著影响铝电解电容器的振动结构风险。

Abstract

Aluminum electrolytic capacitors used in vehicle and industrial equipment often suffer from mechanical vibration. The vibration can cause bending stress at the capacitor leads and may finally lead to fracture. In this paper，a three-dimensional finite element model of a capacitor with printed circuit board assembly was built to study the influence of different mounting configurations. The vibration load was simplified as equivalent acceleration. A value of 10

was applied in the

，

Y，

and

directions. Two mounting types were considered，including vertical through-hole installation and horizontal installation. The cases with and without adhesive fixation were also compared. The simulation shows that both mounting types are sensitive to vibration direction，but the main stress direction is different. Without adhesive support，the horizontal type has higher stress level. Stress concentration mainly appears at the lead root and bending region. After applying adhesive，the maximum equivalent stress decreases greatly and the stress concentration becomes weaker.This research results suggest that mounting configuration changes the lever arm length and load transfer path， which directly affects vibration reliability.

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references

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