High Strain Rate Compressive Tests on Wood

The penetrating split Hopkinson pressure bar was used to study the response of dry maple wood under high strain rate impact load. Using longer bar and shorter specimens utilised the assumption of one-dimensional stress waves travelling along the bars and specimen because the experiment fulfilled the ratio of diameter to length of bars condition in Kolsky bar experiments. The stressstrain relationships and behaviour of the fibre structure materials failure were investigated during the compressive dynamic tests at strain rates between 9501 and 2000 s-1. The mechanics of dynamic failure was studied and it was confirmed that deformation of specimen is a linear function of energy absorption by specimens.