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扩展八角环传感器是农机耕耘工作部件外载统计函数资料试验测定中广泛使用的弹性元件。其结构尺寸设计及保证最小桥路干扰的布片位置的选择,目前尚缺少经济、可靠的方法,往往难于保证测试精度。本文试图采用边界元法(Boundary Element Method)在电子计算机上达到数值试验之目的。同时还对扩展八角环元件作了有限元分析、光弹分析和实验标定。结果表明边界元法具有一定的分析和预测精度,并且所需输入数据较少,适于在微型机上实现。可为扩展八角环传感器的设计和研究提供一个经济、有效而又方便的理论分析预测手段。同时,本文的定量分析结果将有益于设计和使用者对该传感器的深刻了解。
Extended octagonal ring sensor is a part of agricultural machinery work hard outside the statistical function of the test data widely used in the determination of elastic components. Its structure size design and to ensure that the smallest bridge interference cloth location selection, there is still a lack of economical and reliable method, it is often difficult to ensure the accuracy of the test. This article attempts to use the Boundary Element Method (Boundary Element Method) to achieve numerical experiments on electronic computers. At the same time, finite element analysis, photoelastic analysis and experiment calibration are also carried out on the extended octagonal ring element. The results show that the boundary element method has some analysis and prediction accuracy, and the required input data less suitable for micro-computer implementation. It can provide an economical, effective and convenient theoretical analysis and prediction method for the design and research of expanding octagonal ring sensor. In the meantime, the quantitative analysis results in this paper will benefit both the design and the user’s understanding of the sensor.