التفاصيل البيبلوغرافية
| العنوان: |
爆炸载荷下机织物的动态响应与失效行为. (Chinese) |
| Alternate Title: |
Dynamic response and failure behaviors of woven fabrics under blast load. (English) |
| المؤلفون: |
解江, 高斌元, 甄婷婷, 姜超, 冯振宇 |
| المصدر: |
Acta Materiae Compositae Sinica; Oct2022, Vol. 39 Issue 10, p4949-4960, 12p |
| مصطلحات موضوعية: |
BLAST effect, ULTIMATE strength, FAILURE mode & effects analysis, TENSILE tests, FIBER testing, STRAIN rate |
| Abstract (English): |
In order to explore the dynamic response and failure behaviors of fiber fabrics under blast load, quasistatic and high strain rate tensile tests were carried out on three plain fabrics, the mechanical properties of the fabrics were obtained, and the constitutive model of the fabric was established. Using the Arbitrary Lagrangian-Eulerian (ALE) algorithm, a numerical analysis model of the fabric under blast was established, and the dynamic response process and failure modes of the fabric under blast load were studied. The results were compared with the test to verify the validity of the model. The relationship between the deformation peak value and the scaled distance and the energy absorption of each fabric in the hybrid stacked fabrics were obtained that can evaluate the anti-blast ability of the fabrics. The results show that the three kinds of fabrics exhibit different degrees of strain rate sensitivity. The failure strain and ultimate strength of aramid and ultra-high molecular weight polyethylene (UHMWPE) fiber fabrics under high strain rate load increase with the increase of strain rate, showing obvious strain rate effect. The ultimate strength of carbon fiber fabric increases slightly, and the strain rate effect is not obvious. The numerical analysis has obtained the same failure modes of the fiber fabric as the test: Central hole and simply supported boundary tearing. In the studied working conditions, the deformation peak value of the fabric is inversely proportional to the proportional distance, and the back burst surface fabric fails when the deformation peak value exceeds 39 mm. The specific energy absorption of the UHMWPE fiber fabric reaches 24.7 J/g, which is 4.3 times and 8.5 times that of aramid fabric and carbon fiber fabric. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): |
为探究爆炸载荷下纤维织物的动态响应与失效行为，对3 种平纹纤维织物进行了准静态及高应变率 拉伸试验，获取了织物的力学性能参数，建立了织物材料的本构模型。采用任意欧拉-拉格朗日算法(ALE) 算法，建立了织物爆炸冲击数值分析模型，研究了爆炸载荷下纤维织物的动态响应过程和失效模式，并与试 验结果进行了对比，验证了模型的有效性，得到了织物的变形峰值与比例距离之间的关系以及混杂层叠织物 中各织物的吸能量。结果表明，3 种织物表现出不同程度的应变率敏感性，芳纶和超高分子量聚乙烯 (Ultrahigh molecular weight polyethylene, UHMWPE) 纤维织物的失效应变和极限强度都随应变率的增加而增大， 应变率效应明显，碳纤维织物的极限强度略有增加，应变率效应不明显。数值分析得到了与试验相同的织物 失效模式：中心破孔和简支边界撕裂。在所研究工况范围内，织物的变形峰值与比例距离成反比例关系，且 变形峰值超过39 mm 时背爆面织物会发生失效；UHMWPE 纤维织物层的比吸能达到24.7 J/g，分别是芳纶织 物和碳纤织物的4.3 倍和8.5 倍。 [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
