铁磁梁式板磁热弹性屈曲分析

Analysis on magneto-thermo-elastic buckling of ferromagnetic beam-plates

利用铁磁介质体的磁热弹性广义变分原理和模型,以及磁弹性线性化方法和摄动技术,对铁磁 梁式薄板在磁场、温度场共同作用下的多场耦合的力学行为进行了研究,解析地分析了铁磁梁式板的 磁热弹性屈曲失稳,并给出了铁磁梁式板随外加磁场、温度场变化下的多场耦合稳定性特征.

Based on a generalized variational principle of magneto-thermo-elasticity for soft ferromagnetic bodies, the multi-fields interaction for thin ferromagnetic beam-plates under the applied magnetic, thermal fields is investigated in the present paper. The linearized theory of magnetoelasticity and the perturbation technique for magnetic field distribution are employed to study analytically the magneto-thermo-elastic buckling of ferromagnetic beam-plates. The stability characteristics of beam-plates with intensity of applied magnetic field and/or thermal field are obtained.