Study on modelling simulation and distribution characteristics of residual stress during robotic weld end grinding of high strength modulated steel

Ge, Jimin; Deng, Zhaohui; Cao, Dahu; Li, Zhongyang; Lv, Lishu; Liu, Wei; Nie, Jaxue

doi:10.1016/j.jmapro.2023.10.052

Cited by 6 publications

(1 citation statement)

References 30 publications

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“…The main challenges in modeling the process are representation of the multiphysics involved in the process and their interaction, which requires a high level of coupling among the thermal, electrical, metallurgical, and mechanical fields and consideration of the electrical, thermal, and mechanical contact conditions [12,13]. Early simulation work primarily focused on conducting heat transfer analyses of parallel seam welding, without considering thermal-electric coupling [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Parallel Seam Welding Process by Developing a Directly Coupled Multiphysics Simulation Model

Lin,

Qin,

Gong

et al. 2023

Processes

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Parallel seam welding (PSW) is the most commonly employed encapsulation technology to ensure hermetic sealing and to safeguard sensitive electronic components. However, the PSW process is complicated by the presence of multiphysical phenomena and nonlinear contact problems, making the analysis of the dynamics of the PSW process highly challenging. This paper proposes a multiphysics simulation model based on direct coupling, enabling the concurrent coupling of the electric field, temperature field, and structural field to facilitate the analysis of the thermal and electrical dynamics within the PSW process. First, this paper conducts an in-depth theoretical analysis of thermal and electrical contact interactions at all contact interfaces within the PSW process, taking into account material properties related to temperature. Second, the acquired data are integrated into a geometric model encompassing electrode wheels and ceramic packaging components, facilitating a strongly coupled multiphysics simulation. Finally, the experimental results show that the simulated weld area deviates by approximately 6.5% from the actual values, and the highest component temperature in the model exhibits an approximate 10.8% difference from the actual values, thus validating the accuracy of the model. This directly coupled multiphysics simulation model provides essentially a powerful tool for analyzing the dynamic processes in the PSW process.

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