| 袁明清,赵海涛,陈政,李若薇,陈吉安.温度对平流层飞艇囊体材料渗漏性能的影响[J].装备环境工程,2020,17(1):6-12. YUAN Ming-qing,ZHAO Hai-tao,CHEN Zheng,LI Ruo-wei,CHEN Ji-an.Effect of Temperature on the Permeability of Stratospheric Airship Capsule Material[J].Equipment Environmental Engineering,2020,17(1):6-12. |
| 温度对平流层飞艇囊体材料渗漏性能的影响 |
| Effect of Temperature on the Permeability of Stratospheric Airship Capsule Material |
| 投稿时间：2019-08-30 修订日期：2019-12-10 |
| DOI：10.7643/issn.1672-9242.2020.01.002 |
| 中文关键词: 平流层飞艇 渗漏渗漏 细观力学有限元 |
| 英文关键词:stratospheric airship permeability micro-mechanics finite element method |
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| 中文摘要: |
| 目的 对飞艇囊体材料的渗漏特性进行研究，以预测飞艇设计是否满足需求。方法 采用细观力学有限元方法，通过微裂纹密度以及平均裂纹开口大小求解氦气渗漏路径的横截面积，进而预报飞艇囊体的初始渗漏速率，并计算昼夜循环温度下飞艇囊体的渗漏速率及压力变化情况。结果 昼夜循环的温度变化导致飞艇内外压差、氦气渗漏速率均发生变化，且均与温度呈正相关。结论 该方法能够预报平流层飞艇的极限驻空时长，并为平流层飞艇的设计提供技术支持。 |
| 英文摘要: |
| The paper aims to study the permeability of airship capsule materials and predict whether the airship design meets demands. In this paper, the micro-mechanics finite element method was used to calculate the cross-sectional area of helium leakage path via the micro-crack density and the average crack opening displacement, predict the initial leakage rate of the airship capsule and calculate the variation in leakage rate and pressure of airship capsule at the circadian cycle temperature. Temperature changes lead to changes in pressure difference between inside and outside of the airship and the helium leakage rate. Both the pressure difference between inside and outside of the airship and helium leakage rate were positively correlated with temperature. This method can predict the duration of stratospheric airship in the air and provide a technical support for the design of stratospheric airship. |
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