The invention discloses a Mars tire with a shape memory alloy lattice structure, and relates to the field of aerospace probe vehicle parts. The effective design part of the tire is a tire body and ismainly designed for the situation that the tire is damaged due to the complex pavement condition of Mars. The tire body is filled with the lattice structure, and the lattice structure has a good weight reduction effect on the premise that the tire load is guaranteed. And the lattice structure has the vibration reduction and energy absorption capacity, so that the stability of the tire in the service process is guaranteed. Wheel thorns for increasing the road holding force of the tire are arranged on the surface of the tire, and trafficability of the Mars probe vehicle on a soft road is guaranteed. And by utilizing the hyperelasticity of the NiTi alloy, the tire can still restore to the original shape after being subjected to impact load from rock. The tire is integrally formed by adoptinga selective laser melting (SLM) technology, the problem that a lattice structure is difficult to process is solved, Meanwhile, the mechanical property of the tire is regulated and controlled by adopting a corresponding heat treatment process.
一种形状记忆合金点阵结构的火星轮胎涉及航天探测器车零部件领域。所述轮胎的有效设计部分为轮胎胎体,主要针对火星复杂路面情况导致轮胎破损的情况而设计。轮胎胎体采用点阵结构填充,点阵结构在保证轮胎负载的前提下,具有良好的减重效果。点阵结构本身具有的减振吸能能力保障了轮胎服役过程中的平稳性。轮胎表面为增大轮胎抓地力的轮刺,保障火星探测车在松软路面的通过性。利用NiTi合金的超弹性,保障轮胎受到来自岩石的冲击载荷后,仍能够恢复原状。该轮胎采用激光选区熔化技术(selective laser melting,SLM)一体化成形,解决点阵结构加工困难的问题,同时采用相应的热处理工艺调控轮胎力学性能。
Mars tire with shape memory alloy lattice structure
一种形状记忆合金点阵结构的火星轮胎
2020-04-14
Patent
Electronic Resource
Chinese
IPC: | B64G Raumfahrt , COSMONAUTICS |
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