岩石应力计动态匹配试验的新方法——一维碰撞试验

本文介绍了一种用于岩石应力计动态匹配试验的新方法。它基于霍布金生(Hopkinson)压杆原理。该方法的特点是:简单易行,耗费低,不仅能用于测定应力计的动态匹配系数,而且能实验测定应力计在岩石介质中的动态测量性能。该方法也可用于实验室测量一维应力波在岩石和混凝土试件中传播时的衰减规律。文中介绍了实验装置的设计原则,测量系统和试验结果。

A New Method of Dynamic Matching Test for Rock Stress Gauges-One-dimensional Impact Test

A new method of dynamic matching test for rock stress gauges is introduced in this paper. It is based on the principle similar to that of Hopkinson pressure bar. This method is simple, inexpensive and practical. It can be used not only to measure the dynamic matching coefficient of stress gauge but also to determine experimentally the dynamic measuring performances of stress gauge in solid media. The aesign principle of the equipment, the measuring systems and test results are described. This method can be also used to measure the decay of one-demensional stress wave propagating in the rock or concrete specimen in laboratory.