This paper introduces the software and hardware design of the optic elastohydrodynamic test-bed s motion control system based on Advantech s PCI1240,moreover,an effective methed to implement the precision of speed control is presented.

The stress distribution of polycarbonate injection molded parts is tested by the photo-elastic experiment under different gate type and different melt temperature,and the tensile strength and luminous transmittance are tested.

The result is then verified through plane photoelastic tests and finite element analysis.

Then the simulation results are compared with the well-known q-model,α-model and experimental results obtained through the photoelastic test under the same conditions.

Study on photoelastic experiment and numerical simulation of the fractal rock joints;

First of all,the residual stresses distribution is measured by photoelastic experiment,and then the corresponding residual stresses are calculated by applying stress optics law,finally,the mathematical simulative analysis is done for the values.

First of all,the residual stresses distribution is measured by photoelastic experiment,and then the corresponding residual stresses are calculated by applying stress optics law,finally,the values of residual stresses is compared to mathematical simulative values.

The stress distributions on the cable accessory interfaces are acquired by virtue of photoelastic experiments,which provide the base to achieve the structure parameters optimization and to improve the designs.

By incremental iteration,the numerical results are obtained,and compared with photoelastic experimental ones.

By incremental iteration, the numerical results are obtained, and compared with photoelastic experimental ones.

In this paper a new mixed -method-photoelasticity and weight function for the computation of stress intensity factors for crack at a slanting circular hole in a plate by internal even press.