| 引用本文: | 张旭波,吴明儿,包晗.涂层织物类膜材的偏轴梯形撕裂行为[J].建筑材料学报,2021,24(1):121-130 |
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| 涂层织物类膜材的偏轴梯形撕裂行为 |
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张旭波, 吴明儿, 包晗
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同济大学建筑工程系，上海200092
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| 摘要: |
| 考虑0°～900°、间隔75°等13个偏轴角度，对6种涂层织物类膜材进行了偏轴梯形撕裂试验.结果表明：各类膜材撕裂强度与偏轴角的关系曲线近似以450°轴对称，0°～450°及900°～450°撕裂强度先减后增，撕裂强度最高点位于450°，最低点位于150°或225°、750°或675°；各类膜材的偏轴梯形撕裂强度同时由纱线强度和纱线断裂伸长率决定.采用Abaqus软件进行的有限元分析能够较好地模拟各类膜材撕裂起始前的荷载位移曲线，所得到的撕裂起始荷载与试验结果较为接近. |
| 关键词: 涂层织物 建筑膜材 梯形撕裂 偏轴 试验 有限元分析 |
| DOI：103969/j.issn.1007 9629202101017 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目（51778458） |
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| Off axial Trapezoid Tearing Behaviors of Coated Fabrics |
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ZHANG Xubo, WU Minger, BAO Han
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Department of Building Engineering, Tongji University, Shanghai 200092, China
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| Abstract: |
| The off axial trapezoid tearing tests of six different types of coated fabrics were carried out, mainly considering 13 off axis angles：from 0 to 900° with interval of 75°. The trapezoid tearing strengths of all kinds of membrane materials at different off axis angles were obtained. The results show that the relevent curves of tearing strength of all membrane materials and different off axis are symentrical at 450° angles, from 0 to 450° and from 450 to 900°,the tearing strength firstly decreases and then increases, the maximum tearing strength is achieved at 450°, the minimum value is at 150° or 225° and 750° or 675°; the off axial trapezoid tearing strength was determined by the strength and the breaking elongation of yarns. Abaqus software is used to conduct finite element method(FEM), the displacement curves before the onset of tearing can be simulated by FEM. The result is fits well with those obtained from tests, and the initial loads of tearing obtained by FEM is also close to those obtained by tests. |
| Key words: coated fabric membrane material trapezoid tearing off axial test finite element method(FEM) |
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