Finite element simulation of the inertia welding of two similar parts
Finite element simulation of the inertia welding of two similar parts
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DOI：
10.1108/02644409510799730
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发表时间：
1995-06
影响因子：
1.6
通讯作者：
A. Moal;E. Massoni
中科院分区：
文献类型：
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作者：
A. Moal;E. Massoni
描述了用于模拟两个相似部件的惯性焊接过程的完整热机械模型。材料的行为是由不可压缩的粘塑性诺顿霍夫定律，其中的流变参数是依赖于温度。摩擦定律是通过实验确定的，取决于规定的压力和两部分之间的相对旋转速度。力学问题的解决考虑虚功原理，包括惯性项。在轴对称近似中，速度场的三个分量（例如径向、纵向和旋转速度）的计算允许考虑扭转效应。域更新的基础上的拉格朗日公式。对于每个时间步，分别求解具有边界条件（对流、辐射和摩擦通量）的非线性传热方程。机械和热计算的误差估计器的设计，以适应网格的自动ww…
A complete thermo‐mechanical model for the simulation of the inertia welding process of two similar parts is described. The material behaviour is represented by an incompressible viscoplastic Norton—Hoff law in which the rheological parameters are dependent on temperature. The friction law was determined experimentally and depends on the prescribed pressure and the relative rotating velocity between the two parts. The mechanical problem is solved considering the virtual work principle including inertia terms. The computation of the three components of the velocity field such as radial, longitudinal and rotational velocity, in an axisymmetric approximation allows to take into account the torsional effects. The domain is updated based on a Lagrangian formulation. The non‐linear heat transfer equation with boundary conditions (convection, radiation and friction flux) is solved separately for each time step. Error estimators on mechanical and thermal computation are devised to adapt the mesh in an automatic w...