FEM Simulation & Digital Twins in Forging
锻造工艺有限元仿真与数字孪生
标签：有限元仿真, 数字孪生, DEFORM, 模具负荷
DEFORM、Forge NG 等有限元软件可模拟铜合金锻造：输入材料流动应力曲线（Gleeble 热模拟试验机测定）、模具温度与摩擦系数（石墨润滑取 0.2–0.3），预测折叠、充不满与模具负荷，黄铜模锻试模次数可从 3–4 次降到 1–2 次。数字孪生更进一步：压机加装位移与力传感器实时回传，与仿真模型对齐后在线预警过载。某厂在伺服压机上建孪生模型，模具开裂提前 2 万次行程预警，年度模具费节省约 30%。
FEM packages like DEFORM and Forge NG simulate copper-alloy forging: feed in flow-stress curves (measured on a Gleeble thermomechanical simulator), die temperature and friction (0.2–0.3 with graphite lube) to predict folds, underfill and die loads — brass die-forging trials drop from 3–4 to 1–2 iterations. Digital twins go further: presses instrumented with displacement and force sensors stream back live data, aligned to the simulation for online overload warnings. One shop built a twin on its servo press that predicted die cracking 20,000 strokes ahead, cutting annual die costs about 30%.
