【摘要】 用预埋于不同位置的压力探头，监测冲击产生的平面应为波在岩石试件中的应力历史波形。对应力波经过Lagrange分析得到BukitTimah花岗岩的动态本构关系。在一维应变状态下，BukitTimah花岗岩的应力依赖于瞬态应变和应变率，以及波动过程的应变率历史。更多还原

【Abstract】 The dynamic constitutive relation of Bukit Timah granite under shock wave is obtained by the experiment using a light gas gun. For each experimental point, the process of stress-strain is monitored throughout the response with the respective preembedded pressure gauges. The sampled stress waves are then analyzed by Lagrange analysis method to arrive at quantitative constitutive relation. Under the state of one-dimensional strain, the stress of the granite depends on transient strain, strain rate and the strain rate history.Within the loading range, stress a can be represented by the polynomial of the strain and strain rate .更多还原