约束边界条件对气动复合弹性体形变性能的影响

发布时间：2018-05-13 00:16

本文选题：气动复合弹性体 + 人工肌肉　；参考：《机床与液压》2016年19期

【摘要】：采用橡胶气囊和约束元件研制了一种新型伸长型气动人工肌肉。采用高分辨率CT机测试了肌肉内部气囊与约束边界接触变形,并利用静力学实验装置进行了不同类型约束环人工肌肉在气压驱动下变形对比实验,获得了不同约束边界条件对气动复合弹性体的形变性能影响规律。结果表明:自由约束边界大小决定人工肌肉的形变性能,圆环状约束边界明显高于圆柱状。其变形能力与约束环厚度成反比,与间隙成正比。在0.3 MPa气压下,圆环状约束环约束的肌肉轴向变形量比柱状约束环增加了51.9%;厚度为5 mm的约束环比厚度1 mm约束环轴向变形量减少了11.9%;间隙为1 mm约束环比无间隙轴向变形量增加了65.1%。
[Abstract]:A new type of elongated pneumatic artificial muscle was developed by using rubber air bag and restraint element. High resolution CT machine was used to measure the contact deformation between the internal airbag and the restraint boundary, and a contrast experiment was carried out on different types of restraint ring artificial muscle under the pressure driven by the statics experimental device. The influence of different constrained boundary conditions on the deformation properties of pneumatic composite elastomer is obtained. The results show that the deformation behavior of artificial muscle is determined by the size of free restraint boundary, and the circular constraint boundary is obviously higher than that of cylinder. Its deformability is inversely proportional to the thickness of the restraint ring and proportional to the clearance. At 0. 3 MPa, The axial deformation of the circumscribed muscle is increased by 51.9 than that of the cylindrical ring, the axial deformation of the circumscribed ring with a thickness of 5 mm is decreased by 11.9 and the axial deformation of the circumscribed ring with a gap of 1 mm is increased by 65.1 than that of the ring without the gap.
【作者单位】：北华大学工程训练中心;北华大学机械工程学院;
【基金】：国家自然科学基金资助项目(51275004) 吉林省科技发展计划资助项目(20150520109JH) 吉林省教育厅“十二五”科学技术研究资助项目(20150158) 吉林市科技创新发展计划资助项目(201464043;20156413)
【分类号】：TH138.5

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