爆炸冲击下薄板塑性应变预测模型及验证OA

To address the high cost issue of measuring blast shock waves using the self-developed effect target method and the limitation of insufficient experimental validation in finite element analysis,this paper proposed a closed-loop research methodology integrating effect target experiments with Abaqus/Explicit finite element simulation,adapted for predicting the dynamic response of a 40 mm diameter micro effect target.By integrating the Brode formula,a modified Friedlander waveform and the CONWEP load algo-rithm,and combined with the Johnson-Cook dynamic constitutive model,a"load-structure-material"chain simulation model was constructed to systematically investigate the plastic dynamic response of 1060 aluminum thin plates under blast loading.The simulation results were validated by both shock tube and field effect target experiments,with the relative error in predicting central deflection being less than 6%.Parametric sensitivity analysis indicates that the material yield strength is the most critical parameter affect-ing accuracy,and a 0.5 mm mesh achieves the optimal balance between efficiency and accuracy.Com-pared with existing typical models,the proposed method significantly reduces the prediction error from 10.3%～16.1%to 5.7%.This method can complete the virtual optimization of target plate parameters before experiments,reducing the number of experiments by more than 40%,providing an efficient and low-cost technical approach for the anti-explosion design of military equipment.