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摘要:
针对螺旋展开盘绕式伸展臂的设计和伸展臂能否顺利收展的关键问题，提出一种螺纹筒和直导轨筒组合作用的套筒型螺旋展开盘绕式伸展臂的研制方案。为预测地面样机的整体性能，采用虚拟样机技术，基于ADAMS软件，建立了套筒型螺旋展开盘绕式伸展臂的动力学仿真模型，对伸展臂的收拢和展开过程进行了仿真分析，并得到了横杆在过渡区处于后屈曲状态的变形特性。通过装配的地面样机进行了伸展臂收拢和展开地面试验，在伸展臂的变形过程中，通过观察三角横框的失稳变形得到了伸展臂利用元件失稳的工作原理，并通过试验方法，将在收展过程中伸展臂长度随底盘转角之间的变化关系曲线，以及伸展臂在过渡区的盘绕半径变化与仿真结果进行了对比，验证了仿真模型的正确性和设计方案的可行性。
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关键词:
- 螺旋展开盘绕式伸展臂 /
- 收拢展开 /
- 动力学仿真 /
- 过渡区 /
- 地面试验
Abstract:This study suggests the development program of a sleeve type spiral deployment coiled mast using the combination of threaded cylinder and straight guide cylinder, with the goal of designing the sleeve type spiral deployment coiled mast and addressing the crucial issue of whether the mast can be smoothly retracted. In order to predict the overall performance of the ground prototype, this paper adopts the virtual prototype technology, based on ADAMS software, establishes the dynamic simulation model of the sleeve type spiral deployment coiled mast, simulates the retraction and extension process of the mast, and analyzes the deformation characteristics of the crossbar in the transition zone in the post-flexion state. Finally, the ground test of the mast retraction and extension was carried out by the assembled ground prototype. The destabilizing deformation of the triangular cross frame during the mast's deformation process was used to determine the working principle of the mast using elemental instability. The simulation results were compared with the experimentally obtained relationship curves between the change in the mast's length with the chassis angle during the retraction and extension process and the change in the mast's coiled radius in the transition zone, confirming that the simulation model was in the post-flexion state. Comparison is made with the simulation results to verify the correctness of the simulation model and the feasibility of the design scheme.
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图 1 套筒型螺旋展开盘绕式伸展臂设计
Figure 1. Sleeve type spiral deployment coiled extension arm design
图 31 地面样机收拢展开全过程
Figure 31. The whole process of ground prototype retraction and extension
表 2 不同收藏高度与仿真结果的关系
Table 2. Relationship between different collection height and simulation results
收藏高度/mm 仿真结果 180 收展失败 190 收展失败 195 收展失败 200 收展失败 205 收展失败 210 收展成功 
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表 3 不同横杆半径与仿真结果的关系
Table 3. Relationship between different batten radius and simulation results
横杆半径/mm 仿真结果 0.5 收展失败 0.55 收展失败 0.6 收展失败 0.65 收展成功 0.7 收展成功 0.8 收展成功
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表 4 钛镍合金材料参数
Table 4. Titanium-nickel alloy material parameters
材料性能 参数 密度/(g·cm−3) 6.4～6.5 弹性模量/GPa 28～41 最大回复应力/MPa 600
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