局部受载工况下的轮胎受力分析

轮胎属于汽车唯一与地面接触的部件。轮胎性能的好坏，对汽车行驶的安全性有着极大影响。以175/70/R14轮胎为研究基础，通过有限元分析软件分析了轮胎在6种不同局部受载工况下的变形、应力、应变情况。分析表明，与正常静载工况相比，轮胎应力、应变和整体变形情况较复杂，且呈不对称性。与异物接触的胎体区域变形较大，胎侧部位和三角胶部位变形较小；应变较大区域主要集中在异物突起部,其它部位应变较为稳定。此分析结果为纠正非正常泊车，降低轮胎受损情况，消除汽车安全隐患有实用性参考价值。

Analysis of tire stress under local load condition

The tire has a huge influence on the safety of driving due to its engagement with ground. As a result, it is significant for the tire to be researched. In this paper, the deformation, stress and strain of the 175/70/R14 tire under 6?different local loading conditions were analyzed by the finite element analysis software. The results show that the stress, strain and overall deformation of the tire are complex and asymmetric compared with the normal static load condition. They have large deformation of the fetal body areas in contact with foreign bodies. On the contrary, the fetal sides and triangular rubber areas have small deformation. It can be found that foreign bodies with protrusions result in large strain while other parts are relatively stable. This research contributes to correcting abnormal parking, reducing tire damage and eliminating hidden danger.