In this paper, the stretching and rupture of liquid bridge are studied by experiment and numerical simulation. In the experiment, the relationship between the critical rupture distance of the liquid bridge and four factors, including volume of liquid bridge, particle initial distance, liquid bridge stretching velocity and liquid bridge viscosity, is quantitatively studied. It is found that the liquid bridge critical rupture distance can be described by the modified Bond number, where the critical distance shows a maximum value when this number is about 0.6. As the Capillary number of liquid bridge increases, the effect of the liquid bridge stretching velocity on the critical rupture distance increases, while the influence of the liquid bridge viscosity on the critical rupture distance increases with the volume of liquid bridge. Mesh overset is used to describe the profile change of liquid bridge, and based on the simulation the pressure field is applied in calculating the capillary fore in the liquid bridge. The rupture energy of liquid bridge can be mainly related with the Capillary number, showing two different functions when Ca = 0.01 is the turning point. Finally, two empirical formulas are proposed to predict the rupture energy of liquid bridge.

中文翻译：

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两个球形颗粒之间的粘性液桥的拉伸和破裂

本文通过实验和数值模拟研究了液桥的伸缩性。在实验中，定量研究了液桥的临界断裂距离与液桥体积，颗粒初始距离，液桥拉伸速度和液桥粘度四个因素之间的关系。已经发现，液桥的临界破裂距离可以用修正的邦德数来描述，其中当该数目为约0.6时，临界距离显示出最大值。随着液桥毛细管数的增加，液桥拉伸速度对临界断裂距离的影响增加，而液桥粘度对临界断裂距离的影响随液桥的体积而增加。网格覆盖用于描述液桥的轮廓变化，并基于模拟将压力场应用于计算液桥中的毛细作用。液桥的断裂能主要与毛细管数有关，当Ca = 0.01为转折点时，显示出两种不同的功能。最后，提出了两个经验公式来预测液桥的断裂能。