点击次数：

论文类型：期刊论文

发表时间：2007-05-01

发表刊物：JOURNAL OF MECHANICS OF MATERIALS AND STRUCTURES

收录刊物：SCIE

卷号：2

期号：5

页面范围：951-964

ISSN号：1559-3959

关键字：friction stir welding; residual stress; finite element method; energy dissipation

摘要：A numerical model is developed to investigate energy dissipations and residual stress distributions in friction stir welds. Results indicate that the maximum longitudinal residual stress can be increased with the increase of the translational velocity of the pin. But the variation of the angular velocity of the pin does not significantly affect the residual stress distributions. Energy dissipation in friction is increased with the increase of the angular velocity of the pin. However, with the increase of the translational velocity of the pin the plastic dissipation of energy is increased and the frictional dissipation is decreased.