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本文就埋入式传感器力学传递中的最基本问题——变形一致原理进行了论述。通过论证提出了在单轴受力、三维受力和受弯挠曲状态下的变形一致条件。这些条件能作为初步确定传感器主体构件尺寸的依据。文章还在实验的基础上,提出了一种推求变截面构件刚度平均值的力学方法,称之为“换算刚度法”。该方法在理论上符合测试传感器的力学传递原理,在实用上可以判别变形一致性的程度,从而改进传感器结构和埋设条件,达到提高测试准确性的目的。
In this paper, the most basic problem in mechanics transfer of buried sensor - deformation consistent principle is discussed. Through the demonstration, the uniform deformation conditions under uniaxial force, three-dimensional force and flexural deflection are proposed. These conditions can be used as a preliminary basis for determining the size of the sensor body components. Based on the experiment, a mechanical method of deducing the average value of the stiffness of the variable cross-section member is also put forward, which is called the “conversion stiffness method”. In theory, this method conforms to the mechanics transfer principle of the test sensor, and can judge the extent of the deformation consistency in practice, so as to improve the sensor structure and the embedding conditions, and achieve the purpose of improving the test accuracy.