NUMISHEET 2022| MeshFree in Toronto
MeshFree inToronto (NUMISHEET2022)
The 12th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Processes (NUMISHEET 2022), July 10–14, 2022 • Sheraton Centre Toronto Hotel • Toronto, Ontario, Canada第12届三维金属材料形成过程的数值模拟国际会议，在加拿大多伦多举办。
NUMISHEET会议是板材成形成形过程数值模拟领域最具影响力的国际会议，也是板材成形数值仿真领域最杰出的专家聚会交流思想和讨论相关技术的论坛 The NUMISHEET（International Conference and Workshop on the Numerical Simulation of 3D Sheet Metal Forming Processes）ConferenceSeries is themost influentialinternational conference in the field of numerical simulation ofsheet metal forming processes and a forum for the gathering of the mostprominent experts in the field of numerical analysis of sheet metalforming processes to exchange ideas and discuss techniques related to the sheetmetal forming process.在会议上，起亚技术经理“Yoon Ki-hoon”给大家分享MeshFree在模具冲压上的应用
Let's listen to it directly through Yoon Ki-hoon, Manager of the Kia Molding Technology Department, who contributed and presented the paper!!I gave a presentation at a session on the topic of Multiscale modeling of deformation, and it was interesting to see 30-40 people from national and international universities as well as those in charge of numerical analysis and corporate representatives. Let me introduce you to the announcement.
Recently, consumer car preferences have changed dramatically, accelerating plans to produce a variety of car models. For this reason, most automotive engineers are constantly called upon to develop new technologies that can reduce the time it takes to develop new models and produce customizations, and they want to introduce simultaneous engineering engineering into the new model development process.Mold engineers are likewise attempting to shorten mold development time by eliminating additional calibration airborne. Usually in structural analysis, molds are considered rigid to simplify engineering difficulties. However, in practice, the panel forming force causes contact pressure on the mold shape surface, and that pressure causes elastic deformation in the mold.
Figure 2. Mold model in which elastic deformation occursThis is the main cause that prevents mold engineers from predicting mold deformability. Due to this mold deformation, additional springback analysis and manual work are essential after the gold ball. To shorten this additional process, it is important to accurately predict where and how much the mold will deform. Through the analysis shown in Figure 1, the exact amount of compensation should be calculated and reflected in the mold design phase.
Previous studies have proposed a variety of approaches to predict deformation and have demonstrated the effectiveness of molded structural East Sea. Molding structure integration simulations were performed, reducing mold making costs and increasing productivity. By linking the molding analysis to the structural analysis, the springback for the fender panel was able to accurately predict.
Figure 3. Structural analysis model of mold using midas MeshFree from IBM
Conclusion and future plans
In this study, a molded-structural East Sea was applied to a press mold and the mold deformation distribution was obtained as a final analysis. The results of this analysis were found to be similar to the values measured in the actual mold.
Figure 4. Mold deformation analysis results using MeshFree-1
Figure 5. Mold Deformation Analysis Results Using MeshFree-2
Figure 6. Mold deformation analysis results using MeshFree-3
In addition, we were able to demonstrate that the proposed mold deformation analysis methodology resulted in a significant reduction in turnaround time and established a process that allowed mold design and deformation analysis to be performed simultaneously.
Figure 7. Mold deformation analysis time for improved processes with reduced compared to traditional processes
The improved process can be utilized practically in the mold design business without requiring FEM specific expertise. In particular, if a mold manufacturer needs a fast and accurate analysis, but it is difficult to hire an analysis expert, it seems to be a cost-effective method. In the future, this analysis process will be extended to all molds that are developed in the future.
