We focus on the mechanical strength of piezomagnetic beam-like nanosize sensors during post-buckling. An effective flexomagnetic property is also taken into account. The modelled sensor is selected to be a Euler-Bernoulli type beam. Long-range interactions between atoms result in a mathematical model based on the nonlocal strain gradient elasticity approach (NSGT). Due to possible large deformations within a post-buckling phenomenon, the resultant equations are essentially nonlinear. We establish the results using an analytical approach, including a variety of boundary conditions. We visualize the effective response of the designed sensor for several key components. It was obtained that the flexomagnetic effect is meaningful for less flexible boundary conditions. Besides, it was found that the failure originated from post-buckling occurs sooner if the numerical amounts of nonlocal parameter and the strain gradient one are respectively so small and exceedingly large.

我们专注于后屈曲过程中压电束状纳米尺寸传感器的机械强度。还考虑了有效的挠磁特性。建模的传感器选择为Euler-Bernoulli型光束。原子之间的远程相互作用会基于非局部应变梯度弹性方法（NSGT）建立数学模型。由于在屈曲后现象中可能发生大变形，因此所得方程基本上是非线性的。我们使用包括各种边界条件在内的分析方法来确定结果。我们可视化设计的传感器对几个关键组件的有效响应。得出的结论是，柔磁效应对于较不灵活的边界条件有意义。除了，