为了利用全场测试技术测量非均匀变形场的优势，提出了一种可充分利用材料在高速冲击载荷下的惯性效应的冲击测试方案。利用超高速全场测试技术获取试样受冲击载荷作用下的动态应变和加速度场，结合虚场法对动态全场数据进行处理识别出材料的本构参数。从有限元仿真计算以及惯性冲击测试两方面验证了这一方法的可行性。结果显示：惯性效应在冲击测试领域的应用大大简化了测试设备，比如，由于不需要测试外力，所以无需Hopkinson杆测试中的入射杆和透射杆装置；同时也拓展了冲击试验的设计空间，如可测试复杂形状或者软质的试样等。%A novel methodology was proposed using inertial effects at high strain rates to take advantages of ful-ifeld measurements, especialy the ability to measure the heterogeneous deformation. The acceleration ifelds and the dynamic strain ifelds were acquired on the specimen surface under impact load by ultra-high speed ful-ifeld measurements. Then, ful-ifeld data were processed by the virtual ifelds method to identify material constitutive parameters. Both the numerical simulation and experimental tests validated the feasibility of this methodology. The results show that the application of inertial effects for high strain rate testing can simplify the experimental set-ups. For instance, the input and output bars in Hopkinson bar tests are not be required anymore because of no need of any impact force measurement. Moreover, the design space for high strain rate testing can be enlarged to the specimens with complex shape or soft texture.
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