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针对平头弹丸穿透固支圆形金属薄靶问题，对 Wen-Jones 模型进行了推广应用。根据前人的研究成果，提出了等效应变失效准则，以预测金属薄靶的穿透。与实验数据的对比表明，新模型的预测结果与有关低碳钢和铝合金的实验结果相吻合。尽管新模型与 Wen-Jones 模型采用的破坏准则不同，但是两者的预测结果相近。分析发现，当靶板材料的延性足够大时，Wen-Jones 模型可看作是新模型的一种特殊情况。“,”An extension of the Wen-Jones model for the perforation of fully-clamped circular thin metal plates struck transversely by flat-faced projectiles at the center was made.Based on previous studies,an effec-tive strain failure criterion was suggested to predict the perforation of the thin metal plates.It is shown that the present model predictions are in good agreement with available experimental data for mild steel plates as well as aluminum alloy targets.The present model and the Wen-Jones model produced similar results although they are constructed using different failure criteria,which indicates that the Wen-Jones model can be seen as a special case of the present model when the ductility of plate is large enough.