基于弹塑性理论提高转矩轴设计失效转矩精度

Investigation of Improving Wrench Moment Axis Design Failure Torque Accuracy based on Elastic-plastic Theory

设计转矩轴多采用材料力学理论,导致实际失效转矩远低于或远高于设计值,使转矩轴经常在安全区内断裂或超出安全区不能及时断裂。以矿用转矩轴为研究对象,应用弹性、弹塑性力学并借助有限元法进行理论分析与设计,使实际失效转矩更接近于设计失效转矩,提高了设计失效转矩精度,并通过扭转实验进一步证实了设计结果的可靠性。

In wrench moment axis design, material mechanics theory is usually applied, which leads to actual failure torque far lower or higher than the design value and causes the wrench moment axis to fracture in safety zone or still work beyond safety zone. The mining wrench moment axis is designed by applying the elastic mechanics, mechanics of elasticity and plasticity with the help of FEM in order to make the design failure torque more close to the actual failure torque and improve the precision of design failure torque. The reliability of the design results is further validated by the torque experiment.