| 引用本文: | 张吉法,胡斌,徐东亮,张小玉,李卓球.考虑丝束变形和铺层力学方向的铺放线型规划[J].哈尔滨工业大学学报,2016,48(1):172.DOI:10.11918/j.issn.0367-6234.2016.01.026 |
| ZHANG Jifa,HU Bin,XU Dongliang,ZHANG Xiaoyu,LI Zhuoqiu.Pattern planning for the deformation of fiber tows and mechanics direction of placement layers[J].Journal of Harbin Institute of Technology,2016,48(1):172.DOI:10.11918/j.issn.0367-6234.2016.01.026 |
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| 摘要: |
| 为规划不连续预浸丝束在构件曲面上的合理排布形式，分析构件外形、预浸丝束变形和铺层力学方向对构件曲面上铺放路径规划的影响，提出一种工程实用的铺放线型规划方法.分别计算当前路径点的力学方向和材料容许铺放方向相对于测地线方向的偏角，通过偏角比例控制系数来确定多约束条件下的铺放方向，依次求得新的路径点，从而实现构件曲面的铺放路径规划；以曲面均匀铺满为目标，引入重叠系数进行线型的覆盖性分析，计算丝束增减的合理位置，完成构件曲面的铺放线型规划.以某自由曲面铺放线型规划为例，验证了该规划方法的有效性.
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| 关键词: 预浸丝束 铺放路径 线型规划 容许偏角 覆盖性分析 边界处理 |
| DOI：10.11918/j.issn.0367-6234.2016.01.026 |
| 分类号:V261; TP391 |
| 文献标识码:A |
| 基金项目:国家高技术研究发展计划(863计划)(2013AA031306). |
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| Pattern planning for the deformation of fiber tows and mechanics direction of placement layers |
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ZHANG Jifa1, HU Bin1 , XU Dongliang1, ZHANG Xiaoyu2, LI Zhuoqiu2
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（1.School of Mechanical and Electronic Engineering, Wuhan University of Technology, 430070 Wuhan, China; 2. School of Science, Wuhan University of Technology, 430070 Wuhan, China）
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| Abstract: |
| To plan a reasonable placement pattern, this paper analyzes the influence of component surface shape, deformation of preimpregnated fiber tows and mechanics direction of placement layers on planning placement routes on the meshed surface, and presents a practical engineering approach for pattern planning. The deflection angles between geodesic direction and mechanical direction and allowable placement direction are calculated, respectively. Then, the multi-constraint placement directions are determined by proportional control coefficient of the deflection angles, and a new route point is obtained in turn. The placement route planning is implemented on the surface. In addition, to achieve a uniform covering surface, the overlap coefficient to the coverage analysis of placement pattern is introduced and the reasonable positions of increasing or decreasing fiber tows are calculated. Thus, the placement pattern planning is completed on the component surface. A placement pattern planning on a free form surface, for example, is used to verify the validity of these methods.
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| Key words: preimpregnated fiber tows placement route pattern planning allowable deflection angle coverage analysis boundary treatment |
