Journal of Jilin University(Engineering and Technology Edition) ›› 2025, Vol. 55 ›› Issue (9): 2926-2934.doi: 10.13229/j.cnki.jdxbgxb.20240119

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Product quality improvement in bonding process of automotive interior components

Yi LI(),Yi LIU,Wei-guo YAO()   

  1. Colloge of Materials Science and Engineering，Jilin University，Changchun 130022，China
  • Received:2024-01-29 Online:2025-09-01 Published:2025-11-14
  • Contact: Wei-guo YAO E-mail:henrylee@jlu.edu.cn;wgyao@jlu.edu.cn

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Abstract:

Finite element analysis was used to study the temperature and displacement distribution of automotive interior components at different moments during the bonding process， and the effects of boundary constraints on the model temperature， thermal stress， displacement and damage to the adhesive layer was investigated. The simulation analysis results show that with the increase of time， the temperature of the model increases， the displacement becomes larger and more obvious in the position of large curvature； the simultaneous constraints on the side and bottom surfaces of the interior components during the bonding process effectively reduce the damage of the adhesive layer and improve the overall stiffness of the structure. Comparing the temperature， stress and displacement clound maps under different boundary constraints， it is determined that the optimal design of constraining the side and bottom surfaces at the same time is important for improving the quality of bonding of automotive interior components. This study optimises the bonding process for automotive interior components and provides guidance for improving product quality during the bonding process.

Key words: automotive interior components, finite element analysis, thermal stress analysis, adhesive layer damage, temperature distribution

CLC Number: 

  • TG356

Fig.1

Three-layer surface cladding structure and partial enlargement"

Table 1

Upper and lower layer material parameters"

材料

密度/

（t·mm－3）

弹性模量/MPa泊松比

热导率/

（mW·mm－1·K－1）

热膨胀系数/

K－1

比热容/

（J·kg－1·K－1）

PU5.58×10－103 0570.450.0341.80×10－81.38×106
3D-mesh9×10－114 0000.300.0405.94×10－51.10×109

Table 2

Material parameters of adhesive layer"

性能

密度/

（t·mm－3）

杨氏模量/

MPa

断裂能/（mJ·mm－2）热导率/［mW·（mm·K）－1］

热膨胀系数/

K－1

比热容/

［J·（kg·K）－1］

剪切模量/MPa
数值1.45×10－91 8504300.048.5×10－55.5×108560

Fig.2

XY View"

Fig.3

Amplitude curve"

Fig.4

Bilinear cohesion model"

Fig.5

Heat transfer method"

Fig.6

Grid division and boundary conditions"

Fig.7

Temperature cloud maps"

Fig.8

Displacement cloud maps"

Fig.9

Stress， displacement and temperature distribution"

Fig.10

Cloud map of adhesive damage"

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