【摘要】 运用两点应变测量法的基本原理进行了圆柱形杆末端冲击力测试实验 ,理论值和实测结果取得了一致 ,验证了其可行性 ,并利用两点应变测量法对岩石的动态凿入特性进行实验研究 ,根据最小二乘法曲面拟合 ,得出了更为精确的凿入系数和粘度系数值 ,并在实验的基础上综合得到粘弹性类型岩石——泰山花岗岩力——凿深特性的一般模式更多还原

【Abstract】 The impact force at the end of a cylindrical rod can be estimated by measuring the strains at two suitable points on it. The theoretical value is in well accordance with the testing result and the feasibility is verified. The dynamic penetration characteristic of rock is determined in each test by using the technique from two point strain measurement. The accurate dynamic penetration coefficient and viscous damping coefficient of rock are evaluated by regressive analysis, and the typical model of the force penetration relation of Taishan granite with viscous elasticity is determined.更多还原