CAJ | 학술논문

基于ABAQUS/Explicit对Ti-15-3钛合金室温锥杯成形实验中悬空侧壁起皱现象进行分析，通过对零件边缘的皱纹波长和峰高的定量研究，获取较适合Ti-15-3钛合金室温成形侧壁起皱的模拟参数。将Ti-15-3钛合金室温锥杯成形起皱获取的模拟参数，用于 Ti-15-3钛合金凸弯边橡皮成形起皱的预测，通过定量比较凸弯边边缘的皱纹波长和峰高，分析不同硬度的橡皮对 Ti-15-3钛合金凸弯边橡皮成形起皱的影响。经实验验证，有限元模拟对Ti-15-3钛合金凸弯边上皱纹的模拟与实验结果有很好的一致性。
기우ABAQUS/Explicit대Ti-15-3태합금실온추배성형실험중현공측벽기추현상진행분석，통과대령건변연적추문파장화봉고적정량연구，획취교괄합Ti-15-3태합금실온성형측벽기추적모의삼수。장Ti-15-3태합금실온추배성형기추획취적모의삼수，용우 Ti-15-3태합금철만변상피성형기추적예측，통과정량비교철만변변연적추문파장화봉고，분석불동경도적상피대 Ti-15-3태합금철만변상피성형기추적영향。경실험험증，유한원모의대Ti-15-3태합금철만변상추문적모의여실험결과유흔호적일치성。
Wrinkling is a common failure in the sheet metal forming of titanium owing to the relatively poor ability to shrink. It is important to predict wrinkling accurately in the sheet metal forming without costly trials. The ABAQUS/Explicit code was utilized to predict the wrinkling behavior in the sheet metal forming of Ti-15-3 alloy sheets. In terms of the comparison of wrinkling behavior between the simulation and experiment of the Fukui’s conical cup tests at room temperature, the sensitivities of wrinkling simulation to various input parameters were evaluated comprehensively and quantitatively. Prediction of wrinkling and influence of rubber hardness on the winkling behavior in the rubber forming of convex flange were investigated quantitatively and validated by the rubber forming experiments. The excellent agreements between the simulations and the experiments confirmed the accuracy of the prediction.