| 引用本文: | 李博,王三民,袁茹.剪式单元直线阵列可展结构的稳定性[J].哈尔滨工业大学学报,2014,46(9):50.DOI:10.11918/j.issn.0367-6234.2014.09.009 |
| LI Bo,WANG Sanmin,YUAN Ru.Stability of linear array deployable structures based on structure of scissor-like element[J].Journal of Harbin Institute of Technology,2014,46(9):50.DOI:10.11918/j.issn.0367-6234.2014.09.009 |
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| 摘要: |
| 为获得剪式可展结构失稳时的临界载荷,开展剪式单元直线阵列可展结构的稳定性研究．首先基于杆件的弹性变形分析,建立了剪式单元的结构失稳极限载荷表达式,然后将其应用于阵列组合而成的可展结构,获得了这种结构的稳定性条件．结果表明:单元个数、杆件柔度和位置角等参数共同影响结构失稳时的临界载荷,随着单元个数增加或杆件柔度增大,结构稳定性逐渐降低;位置角受到单元个数影响,不能单独作为判断结构失稳的依据．最后进行可展结构稳定性仿真分析,并将仿真结果与理论分析结果对比,两者吻合性较好,证实了本文提出方法的正确性． |
| 关键词: 剪式结构 直线阵列 稳定性 失稳载荷 仿真 |
| DOI：10.11918/j.issn.0367-6234.2014.09.009 |
| 分类号:TH113.2 |
| 基金项目:国家自然科学基金资助项目(51175422). |
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| Stability of linear array deployable structures based on structure of scissor-like element |
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LI Bo, WANG Sanmin, YUAN Ru
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(School of Mechatronics, Northwestern Polytechnical University, 710072 Xi’an, China)
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| Abstract: |
| In order to get the buckling load of deployable structures, stability of linear array deployable structures based on structure of SLE were studied. The paper established a structural instability limit load expression of SLE based on analysis of the elastic deformation of bar, which is applied to the array combination of deployable structure. Then the condition of the stability of this structure is obtained. Results indicate that: Buckling critical load were affected by the bar parameters such as the number of units, bar flexibility and position angle. With the increase of the number of units or the bar flexibility, structural stability gradually reduced; The position angle were affected by unit number, which cannot be used separately as the basis for judging structure instability.Deployable structure stability simulation analysis results and the theoretical analysis results are compared each other, confirming the correctness of the proposed method in this paper because of the experiment data well. |
| Key words: deployable structure linear array stability buckling load simulation |
