基于修正D-P准则的迫击炮座钣-土壤模型在强冲击载荷下的动态响应

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摘要目前在Abaqus中计算迫击炮座钣模型时选择的土壤计算模型是软件中自带的D-P(Drucker-Prager)模型，与实际情况存在一定差距。为提高某迫击炮座钣-土壤耦合模型的计算精度，本文建立座钣-土壤耦合有限元仿真模型，将一种修正的D-P准则应用于迫击炮座钣-土壤耦合计算中的土壤屈服准则，该准则引入了一种角隅模型，考虑了拉剪屈服曲线的修正。并且，为验证应用效果，设计并开展强冲击载荷下迫击炮座钣-土壤动态特性试验，获得座钣及土壤中测点的动态响应值。数值计算和试验测试结果表明，修正D-P屈服准则可以较好地描述试验现象，从而可提高迫击炮座钣-土壤耦合模型的计算精度，为座钣的设计提供参考。

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	王锋锋
	杨国来
	葛建立

关键词 ：迫击炮座钣, 强冲击载荷, D-P准则, 有限元, 动态响应

Abstract：At present, the soil calculation model selected when calculating the mortar base plate model in Abaqus is the D-P (Drucker-Prager) model that comes with the software, which has a certain gap with the actual situation. In order to improve the calculation accuracy of a mortar base plate-soil coupling model, this paper establishes a base-soil coupling finite element simulation model, and applies a modified D-P model to the soil yield in the mortar base plate-soil coupling calculation The criterion, the criterion introduces a corner model, considering the modification of the tensile-shear yield curve. In addition, in order to verify the application effect, the mortar base plate-soil dynamic characteristics test under strong impact load was designed and carried out and the dynamic response values of the plates and the measuring points in the soil were obtained. Numerical calculations and experimental test results show that the modified D-P yield criterion can better describe the experimental phenomenon, which can improve the calculation accuracy of the mortar base plate-soil coupling model and provided reference for the design of the base plate.

Key words： mortar base plate strong impact load D-P criterion finite element dynamic response

收稿日期: 2020-10-16 出版日期: 2022-03-15

引用本文:

王锋锋，杨国来，葛建立. 基于修正D-P准则的迫击炮座钣-土壤模型在强冲击载荷下的动态响应[J]. 振动与冲击, 2022, 41(5): 214-220.
WANG Fengfeng, YANG Guolai, GE Jianli. Dynamic response of mortar base plate-soil model under strong impact load based on modified D-P criterion. JOURNAL OF VIBRATION AND SHOCK, 2022, 41(5): 214-220.

链接本文:

http://jvs.sjtu.edu.cn/CN/ 或 http://jvs.sjtu.edu.cn/CN/Y2022/V41/I5/214

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