【摘要】 对应用于分层制造的多层金属板材超声波焊接的开裂问题进行了试验研究和理论分析,并找出了开裂的根本原因:①存在焊接缺陷;②摩擦剪切应力、抗形变内应力和疲劳效应的共同作用。更多还原

【Abstract】 Both experimental work and theoretical analysis have been carried out to study the mechanism of the flaw in ultrasonic welding of multilayer metal materials which aims at developing rapid prototyping by laminated object manufacturing .Via this outcome, The two reasons for the flaw are got, one is the welding disfigurement and the other is the co-effect of shearing strength out of friction, stress out of deformation and fatigue.更多还原