A hybrid non-linear numerical model of the thermal field produced during Friction Assisted Joining process of Metal-polymers hybrid joints is developed. The model uses experimental processing loads (plunging load and torque) measured during an experimental campaign as inputs. A hybrid approach was used to simulate the contact between the tool and the metal sheet. Indeed, the plunging load was simulated as a prescribed load acting on the punch while the friction heat owing to the interaction of the rotating tool with the metal sheet was simulated as a distributed heat flux over the tool-metal contact surface. This enabled a dramatic reduction of the complexity of the model along with a short simulation runtime. During experimental tests, an IR camera was used to measure the real temperature evolution. These data were used to calibrate and validate the FE model. The results indicated that the developed model can accurately predict the temperature field on the upper metal surface. Thus, it can be readily used to forecast the temperature evolution and distribution and the metal-polymer interface, which is the most influencing factor that determines the mechanical behavior of this type of joints.

建立了金属-聚合物混合接头摩擦辅助连接过程中产生的热场的混合非线性数值模型。该模型使用在实验活动期间测得的实验处理负荷（下降负荷和扭矩）作为输入。混合方法用于模拟工具和金属板之间的接触。实际上，将切入载荷模拟为作用在冲头上的规定载荷，而将由于旋转工具与金属板的相互作用而产生的摩擦热模拟为工具-金属接触面上的分布热通量。这极大地降低了模型的复杂性，并缩短了仿真时间。在实验测试期间，使用红外热像仪来测量实际温度变化。这些数据用于校准和验证有限元模型。结果表明，所开发的模型可以准确预测金属上表面的温度场。因此，它可以很容易地用于预测温度的演变和分布以及金属-聚合物界面，这是决定此类接头机械性能的最大影响因素。