艇体变形对轴系校中的影响

艇体变形是影响轴系校中质量的重要因素，以深水潜器为研究对象，通过建立潜器的三维有限元模型，提出利用弹簧约束调节潜器重力与浮力平衡的方法，分析潜器处于正浮状态时，在重力、浮力和静水压力作用下的艇体变形，得出潜器轴系各个轴承的位移数据，并分析轴承位移造成的轴承负荷变化。为艇体变形影响下的潜器轴系校中提供依据。分析结果表明：耐压艇体内的轴承位移要小于耐压艇体外，支撑轴承的艇体结构的差异会导致轴承位移大小的不同，从而导致各个轴承负荷变化也不一样，艇内液舱的不对称布置会导致位于该液舱上轴承产生较大的横向位移和横向轴承负荷。

Research on the Influence of Hull Deformation on Shafting Alignment

The hull deformation is a significant factor affecting the quality of the shafting alignment. The deep-water submersible vehicle is taken as the research object. By establishing the 3D finite element model of the submersible vehicle, a method of balancing the gravity and buoyancy of the submersible vehicle by using the spring restraint is proposed. The hull deformation under the action of gravity, buoyancy and hydrostatic pressure is analyzed when submarine is in upright floating attitude, and the displacement data of each bearing of the submersible vehicle shaft system is obtained, the bearing load variation caused by bearing displacement is also analyzed, which offers a reference for shafting alignment of submersible vehicle considering hull deformations. The analysis results show that the bearing displacement in the inside of pressure hull is smaller than that in the outside. The difference of support structure of the bearing will result in different bearing displacements. The asymmetric arrangement of the liquid tank inside the submersible vehicle will lead to a larger lateral displacement and bearing load of the bearing located on the tank.