结构件的高精度抗弯刚度测试方法研究

Research on Precision Test Method of Anti-bending Stiffness of Structure Parts

通过挂质量块来给被测构件施加弯矩测量相应变形是目前结构件抗弯刚度测试的主要方法,针对其测量精度不高、无法实现自动测试等问题,提出了一种高精度抗弯刚度测试方法。基于抗弯刚度计算理论,建立了相应的数学计算模型。利用计算转角变形的方法,解决作用力臂精确计算问题。结果表明,相对传统测试方案,不仅能提高被测件的抗弯刚度测试精度,而且实验过程无需人工参与,实现了自动化测试的要求。

To hang a mass block as an adding bending force to the tested structure parts and measure the relative deformation is a main method of anti-bending stiffness measurement. With its low accurate and nonautomatic measurement problems, the paper designed a precision automated test method of anti-bending stiffness, and built mathematical model based on the calculation theory of anti-bending stiffness. To solve to compute the accurate value of the arm of force problem with the angular deformation measured. The calculation results indicate that compared with the traditional measurement project design, the new method provides a higher test precision and the measurement can be automated without the manpower participation. [ Ch,4 fig. 11 ref. ]