铝电缆超声波钎焊

本文介绍了飞机用铝电缆超声波钎焊的方法和实验测试数据。用此种方法焊接的铝电缆已在飞机上运行了十六年之久,性能稳定可靠,经济效益显著,解决了以铝代铜的关键性问题,有可能广泛地推广应用在各种输电线路上。     

Flow difference effect in the two-lane lattice hydrodynamic model

By introducing a flow difference effect, a modified lattice two-lane traffic flow model is proposed, which is proved to be capable of improving the stability of traffic flow. Both the linear stability condition and the kink-antikink solution derived from the modified Korteweg-de Vries (mKdV) equation are analyzed. Numerical simulations verify the theoretical analysis. Furthermore, the evolution laws under different disturbances in the metastable region are studied.