以7075-T6铝合金为待焊材料，基于库伦摩擦定律建立摩擦塞焊的产热模型，利用ABAQUS软件模拟7075-T6铝合金的摩擦塞焊过程，建立焊接区域温度场的有限元模型，采用热流密度为定值和基于试验数据的热流密度的两种热源加载方式模拟摩擦塞焊焊接区域的温度场，并进行了试验验证。结果表明：两种热源加载方式下焊接区域温度场的变化趋势是一致的，但是相同时刻下，采用热流密度为定值的热源加载方式得到的铝板温度较高；采用两种热源加载方式得到焊接铝板测温点的温度变化趋势均和试验结果的相吻合，但采用基于试验数据的热流密度得到的模拟结果更准确，因此通过有限元产热模型来模拟7075-T6铝合金摩擦塞焊接区域的温度场是可行的。

By taking 7075-T6 aluminum alloy as the welding material, the heat generation model of friction plug welding was established on the basis of the law of Coulomb friction. The friction plug welding process of 7075-T6 aluminum alloy was simulated by ABAQUS software, and the finite element model of temperature field of the welding area was established. The temperature field of the friction plug welding area was simulated by two heat source loading models including the fixed heat flux and the heat flux based on the test data, respectively, and the simulation results were verified by the experimental results. The results show that the change trends of the temperature field of the welding area using the two heat source loading models were consistent, but the temperature of the welded aluminum plate obtained by the heat source loading model of using the fixed heat flux was higher at the same time. The temperature change trends of the temperature measurement point of the welded aluminum plate by two heat source loading models both agreed with the test results, but the simulation results obtained by using the heat flux based on the test data were more accurate. Therefore, it was feasible to simulate the temperature field of the friction plug welding area of 7075-T6 aluminum alloy by the finite element heat generation model.