【摘要】：從宏觀和微觀兩方面分析了磁化狀態(tài)對力磁耦合關系的影響。從微觀角度,在不同的磁化狀態(tài)下,分析了鐵磁構件磁疇結構在外加應力作用下的變化規(guī)律;從宏觀角度,基于接近原理解釋了外加應力是使初始磁化狀態(tài)不斷向無滯后磁化狀態(tài)靠近的過程,而靠近的方向由無滯后磁化強度與初始磁化強度的差值決定,如果差值大于零,則磁化強度隨應力的增大而增大,如果差值小于零,則反之,但無滯后磁化強度又隨應力的變化時刻發(fā)生變化。為了驗證理論分析結果,對三種不同初始磁化狀態(tài)下的Q235鋼進行靜載拉伸試驗,試驗結果與理論分析具有一致性。
[Abstract]:The effect of magnetization state on the magnetomechanical coupling relationship is analyzed from the macro and micro aspects. From the microscopic point of view, under different magnetization states, the variation of magnetic domain structure of ferromagnetic components under the action of applied stress is analyzed. Based on the principle of proximity, it is explained that the applied stress is the process of making the initial magnetization state approach to the unhysteresis magnetization state, and the approach direction is determined by the difference between the hysteresis magnetization intensity and the initial magnetization, if the difference is greater than zero. The magnetization increases with the increase of stress. If the difference is less than zero, the magnetization without hysteresis changes with the change of stress. In order to verify the theoretical analysis results, the static tensile tests of Q235 steel under three different initial magnetization states were carried out. The experimental results are consistent with the theoretical analysis.
【作者單位】： 南昌航空大學無損檢測技術教育部重點實驗室;
【基金】：國家自然科學基金資助項目(51261023)
【分類號】：TG115.284
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本文編號：2144140