中文摘要：

通过建立金属粘贴式电阻应变计的二维应变传递解析计算模型,对金属粘贴式电阻应变计的应变传递机理进行深入分析。结果表明,金属粘贴式电阻应变计的应变传递过程受敏感栅、基底及胶接层的几何参数和物理特性参数影响,且在金属粘贴式电阻应变计敏感栅两端存在应变过渡区。当胶接层横向宽度越宽、厚度越薄、弹性模量越大时,敏感栅两端的应变传递过渡区就越小,金属粘贴式电阻应变计的平均应变传递率则越大。因此,在实际应用中,应优先选择高弹性模量的胶粘剂,且必须严格控制金属粘贴式电阻应变计的粘贴工艺。

英文摘要：

A 2D analytical model is proposed to investigate the strain transferring mechanism of the metallic bonded resistance strain gauge. The results show that the strain of the structure cannot be transferred effectively to the grid of metallic bonded resistance strain gauge due to the influence of geometric parameters and mechanical properties of the grid, matrix and adhesive layer,and there are two strain transition regions at both ends of the grid. Moreover,the wider, thinner and stiffer adhesive layer can help decrease the strain transition region and increase the average strain transmission rate. According to the results, conclude that adhesive materials with higher Young’s Modulus should be given priority in practical application, and the bonding technology of resistance strain gauges must be strictly controlled.