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将振动磨支架简化为单自由度理想的力学模型,通过应力分析建立支架在激振力和静载荷作用下,危险截面上的最大动应力方程以及在对称循环的交变应力下支架的疲劳强度。理论和实践证明,支架在动载荷作用下最大应力明显增加,强度削弱,在交变载荷下危险截面容易出现疲劳裂纹。本文为振动质体的设计提供借鉴。
The vibration mill holder is simplified to an ideal mechanical model of single degree of freedom. The maximum dynamic stress equation of the stent under the exciting force and static load and the fatigue strength of the stent under the alternating stress of the symmetrical cycle are established by stress analysis. . The theory and practice prove that the maximum stress of the stent increases obviously under the action of dynamic load and its strength is weakened, and the fatigue crack is liable to appear in the dangerous cross-section under the alternating load. This article provides a reference for the design of vibrating plastids.