基于Jiles-Atherton理论的铁磁材料塑性变形磁化模型修正
发布时间：2019-03-11 20:45
【摘要】：Jiles-Atherton(J-A)模型在磁化建模领域应用广泛,但不同文献给出的J-A模型并不一致,致使采用不同表达式建立的塑性变形磁化模型存在多种版本,其正确性难以甄别.通过对无磁滞磁化方程、能量守恒方程和等效磁场强度方程的梳理与比较,发现原有模型中存在将磁化强度和无磁滞磁化强度混用、将不可逆磁化能量等效于全部的磁化能量、等效磁场强度中应力磁化项界定不清等问题.在此基础上,对上述方程进行了修正,推导了基于J-A模型的塑性变形磁化修正模型.将修正模型计算结果与原模型计算结果、相关文献中的试验结果进行对比,结果表明:与原有计算模型相比,修正模型计算结果的饱和磁化强度和剩余磁化强度随塑性变形增加而减小,矫顽力随塑性变形增大而增大,达到饱和磁化强度时的外磁场强度随塑性变形增大而增大的趋势有所减弱,更符合试验结果,可更准确地反映塑性变形对材料磁化的影响.
[Abstract]:Jiles-Atherton (Ja A) model is widely used in the field of magnetization modeling, but the JA model given in different literatures is not consistent, so there are many versions of plastic deformation magnetization model based on different expressions, and its correctness is difficult to be distinguished. By combing and comparing the non-hysteresis magnetization equation, the energy conservation equation and the equivalent magnetic field intensity equation, it is found that there is a mixture of magnetization intensity and non-hysteresis magnetization intensity in the original model, and the irreversible magnetization energy is equivalent to all magnetization energy. The definition of stress magnetization term in equivalent magnetic field is not clear and so on. On this basis, the above-mentioned equations are modified, and the modified plastic deformation magnetization model based on Ja-A model is derived. The calculation results of the modified model are compared with those of the original model and the experimental results in the relevant literature. The results show that: compared with the original calculation model, the experimental results are compared with those of the original model. The saturation magnetization and residual magnetization of the modified model decrease with the increase of plastic deformation, while the coercive force increases with the increase of plastic deformation. When the saturation magnetization is reached, the external magnetic field intensity increases with the increase of plastic deformation, which is more consistent with the experimental results and can more accurately reflect the effect of plastic deformation on the magnetization of materials.
【作者单位】： 西南石油大学机电工程学院;西华大学流体及动力机械教育部重点实验室;西南石油大学石油与天然气工程学院;
【基金】：四川省科技计划重大项目(批准号:2015SZ0010) 四川省科技支撑计划(批准号:2013GZ0150) 四川省科技计划项目(批准号:2014GZ0121)资助的课题~~
【分类号】：TM271
[Abstract]:Jiles-Atherton (Ja A) model is widely used in the field of magnetization modeling, but the JA model given in different literatures is not consistent, so there are many versions of plastic deformation magnetization model based on different expressions, and its correctness is difficult to be distinguished. By combing and comparing the non-hysteresis magnetization equation, the energy conservation equation and the equivalent magnetic field intensity equation, it is found that there is a mixture of magnetization intensity and non-hysteresis magnetization intensity in the original model, and the irreversible magnetization energy is equivalent to all magnetization energy. The definition of stress magnetization term in equivalent magnetic field is not clear and so on. On this basis, the above-mentioned equations are modified, and the modified plastic deformation magnetization model based on Ja-A model is derived. The calculation results of the modified model are compared with those of the original model and the experimental results in the relevant literature. The results show that: compared with the original calculation model, the experimental results are compared with those of the original model. The saturation magnetization and residual magnetization of the modified model decrease with the increase of plastic deformation, while the coercive force increases with the increase of plastic deformation. When the saturation magnetization is reached, the external magnetic field intensity increases with the increase of plastic deformation, which is more consistent with the experimental results and can more accurately reflect the effect of plastic deformation on the magnetization of materials.
【作者单位】： 西南石油大学机电工程学院;西华大学流体及动力机械教育部重点实验室;西南石油大学石油与天然气工程学院;
【基金】：四川省科技计划重大项目(批准号:2015SZ0010) 四川省科技支撑计划(批准号:2013GZ0150) 四川省科技计划项目(批准号:2014GZ0121)资助的课题~~
【分类号】：TM271
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