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本文以康铜材料为例,将具有孔洞的不均匀复合材料的平均应力和平均电阻率之间的关系由均质材料的应力和电阻率关系代替,运用有限元方法和均匀化方法计算了含孔洞正方形板的初始电阻率和压阻系数。结果发现:康铜材料的初始电阻率和压阻系数、均随着孔洞体分比的增大而增大,压阻系数、反而随着孔洞体分比的增大而减小,其中,三角形孔洞对康铜材料的初始电阻率和压阻系数影响最大。
In this paper, for example, the relationship between the average stress and the average resistivity of an inhomogeneous composite material with holes is replaced by the relationship between the stress and the resistivity of a homogeneous material. By using the finite element method and the homogenization method, The initial resistivity and piezoresistivity of a square hole plate. The results show that the initial resistivity and piezoresistive coefficient of Kangtong materials all increase with the increase of volume fraction of pores, and the piezoresistive coefficient decreases with the increase of volume fraction of pores, The hole has the greatest effect on the initial resistivity and the piezoresistive coefficient of the material.