Effectiveness analysis of the study on the bonding performance of car soft decoration coated interior trim based on cohesive zone model

ABSTRACT

Bonding technology is used as the main connection mode of coated structures of car interior trim, of which the process and structure are being continuously optimized. In this paper, ABAQUS software is applied to establish the finite element model of the bonded structure of the dash panel. Based on the cohesive zone model (CZM) method, the damage and failure process of surface joints under different displacement loading conditions are numerically simulated. The effectiveness of the finite element model based on CZM for the numerical simulation of the damage and failure processes of bonded surface joints is verified from the perspectives of the numerical calculation method, experimental verification, and numerical result analysis. The results show that the finite element model based on CZM theory can effectively simulate and evaluate the damage and failure processes of multiphase polymers or composite surface joints. By obtaining the load‒displacement curves, the stress nephogram and the damage nephogram, the dynamic processes of damage initiation, damage evolution and failure of the surface joint are observed and analysed, and the bonding strength of the interlayer model is also compared and analysed. Compared with the bonding interface between the skin and cloth, the bonding interface between the frame and cloth is less prone to damage.

KEYWORDS:

• Car dash panel
• bonded joint
• ABAQUS
• cohesive zone model

Acknowledgements

This work was financially supported by Jilin Provincial Scientific and Technological Department (20220201119GX).

Disclosure statement

The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

CRediT authorship contribution statement

Yi Li: Conceptualization, Data curation; Ruizhi Ding: Methodology, Investigation, Data curation; Shaoqiang Wang: Resources, Investigation; Jicai Liang: Dara curation, Resources; Weiguo Yao: Resources, conceptualization, Writing- review & editing.

Additional information

Funding

This work was supported by the Jilin Provincial Scientific and Technological Department (20220201119GX).