A Sensing Block Method for Measuring Impact Force Generated at a Contact Part
A Sensing Block Method for Measuring Impact Force Generated at a Contact Part
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一种测量接触部位冲击力的传感块法
DOI：
10.1016/s0734-743x(96)00019-x
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发表时间：
1997
影响因子：
5.1
通讯作者：
S. Tanimura
中科院分区：
文献类型：
--
作者：
Yoshitaka Chuman;K. Mimura;K. Kaizu;S. Tanimura
提出了一种测量碰撞中接触部位冲击力的新方法。这种新的方法，这里称为传感块方法，是基于一个简单的结构，这是由一个小的圆柱形突起的钢圆柱形块。该投影的顶部用作碰撞中的接触平面。在接触部分产生的冲击力可以使用安装在突出部的侧表面上的小应变计来测量。通过标定试验，证实了该方法对直接测量冲击力更为有效，且对正向和斜向冲击都具有较高的灵敏度。所获得的测量几乎完全不受反射波干扰所引起的干扰。利用该方法，对不同长度和球形端部的市售纯铝杆进行了冲击实验。从实验结果中，它被发现，所产生的最大力逐渐增加的势能的平方根成比例，并在接触部分所产生的平均应力是恒定的，并独立于球形端部的曲率半径和冲击速度。
A new method has been devised for measuring the impact force generated at the contact part in a collision. This new method, here called the sensing block method, is based on a simple structure which is made of a steel cylindrical block with a small cylindrical projection. The top of this projection serves as the contact plane in a collision. The impact force generated at the contact part can be measured using small strain gages mounted on the side surface of the projection. Through the calibration tests, the new method was confirmed to be more effective for direct measurement of impact force with relatively high sensitivity for both normal and oblique impacts. The obtained measurements are almost entirely free from disturbances caused by reflected wave interference. Using this method, an impact experiment on commercially available pure aluminum bars with different lengths and spherical ends was performed. From the experimental results, it was found that the generated maximum force gradually increased in proportion to the square root of potential energy, and that the generated mean stress on the contact part was constant and independent of the radius of curvature of the spherical end and impact velocity.