Penetration analysis for geo-material based on unified strength criterion |
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Authors: | Jianchun Li Guowei Ma Maohong Yu |
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Affiliation: | 1. Nanyang Technological University, Singapore 639798, Singapore;2. Xi’an Jiaotong University, Xi’an 710049, China |
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Abstract: | A unified strength criterion is applied for penetration analysis of geo-materials. Based on the cylindrical cavity-expansion theory the relation between the radial traction on the cavity surface and the impact velocity of a rigid projectile is derived. The finial penetration depth of the projectile is analytically obtained and the effect of strength criterion on the penetration depth is investigated. By comparing with existing test results, it is found that the proposed penetration model is effective in the analysis of a rigid projectile penetrating into a semi-infinite geo-material target. |
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Keywords: | Penetration analysis Rigid projectile Geo-material Damage model Unified strength criterion |
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