CAJ | 학술논문

　　农用车负载重，行驶路况差，其传动系统中的十字轴频繁承受瞬时冲击载荷，因其强度达不到要求，在轴颈处可能发生断裂失效，直接影响农用车的使用安全。为此，针对四轮农用车用 WSD4型十字轴，在 ABAQUS中建立其有限元模型，计算出工作面的载荷，施加载荷及边界约束，得到应力和变形的云图。通过对应力云图的分析，得到十字轴强度薄弱的区域，并提出改进意见。结构优化后的十字轴，其安全系数有所提高，使用寿命得到延长。
　　농용차부재중，행사로황차，기전동계통중적십자축빈번승수순시충격재하，인기강도체불도요구，재축경처가능발생단렬실효，직접영향농용차적사용안전。위차，침대사륜농용차용 WSD4형십자축，재 ABAQUS중건립기유한원모형，계산출공작면적재하，시가재하급변계약속，득도응력화변형적운도。통과대응력운도적분석，득도십자축강도박약적구역，병제출개진의견。결구우화후적십자축，기안전계수유소제고，사용수명득도연장。
Exposed to heavy load and poor road conditions , the cross axle in agricultural vehicle ’s transmission endures impact load extensively.Fracture failure occurred in its journal sometimes can be attributable to its low yield strength , and the failure will affect the vehicle ’s security directly.The type of WSD4 cross axle, used in four-wheel farm vehicle, is discussed in this thesis , and its finite element model is built in ABAQUS software , from which, the load and the con-straint conditions are applied , and the plot contours of stress and deformation is obtained .Through the analysis of the plot contours, the region of low yield strength is found out .Finally the improvement of structural optimization is put forward to increase the coefficient of safety and lengthen its service life .