The wear of friction wafers in main clutch features uneven radical distribution.In the operation of friction wafers, high local temperature and material softening are important reasons causing wear.

• 分析了主离合器摩擦片的磨损具有沿径向非均分布的特点，指出摩擦片在使用过程中，局部高温和材料软化是产生磨损的重要原因。