Abstract
비공기압 타이어(Non-Pneumatic tire)는 공기압 타이어와는 다르게 스포크(Spoke)로 공기압의 역할을 담당하는 새로운 타이어이다. 이 타이어는 공기압 타이어의 펑크에 대한 위험과 공기압 유지가 필요 없는 장접을 가졌으며, 공기가 존재하지 않는 우주에서도 사용이 가능하다. 본 연구에서는 음의 각으로 이뤄진 허니컴 구조의 비공기압 타이어를 수직 하중에 따른 접지압을 구하여, 이를 공기압 타이어와 비교하였다. A Non_Pneumatic tire (NPT) has spoke to replace air of the pneumatic tires. A NPT appears to have advantages over the conventional pneumatic tire in terms of flat proof and maintenance free. And a NPT can also be used in the space environment since it uses no air for inflation. In this study, the static contact pressure of NPTs with auxetic honeycomb spokes is investigated as a function of vertical loading and is compared with that of a pneumatic tire. The finite element based numerical simulation of the local stress of an airless tire is carried out with ABAQUS for varying vertical force and honeycomb spokes geometries.
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