摘要
建立了全地面起重机用385/95R25工程机械轮胎带花纹轮胎有限元模型,在验证了模型准确性的基础上分析轮胎在不同特征路面(平面路、横向凸台和纵向凸台)上的力学性能。轮胎充气外缘尺寸和接地数据有限元仿真结果与实测结果一致,表明有限元模型准确、可靠。有限元仿真结果表明:胎肩部位的应力集中于2^(#)带束层端点,应变极值也在此处,横向凸台条件下应力和应变较大;横向凸台条件下,1^(#)带束层帘线张力明显增大,胎体帘线张力在凸台接触区域减小;纵向凸台条件下,1^(#)带束层端点近纵向凸台的接触区域的帘线张力增大,胎体帘线张力变化不大;轮胎的包络刚度约为3000 N·mm^(-1);轮胎在破坏案例中的极限撕裂能为672 J,撕裂能指标对于配方设计有重要的参考意义。
The finite element model of 385/95R25 off-the-road tire for all-terrain crane with tread pattern was established.On the basis of verifying the accuracy of the model,the mechanical property of the tire on different characteristic roads(plane road,transverse boss and longitudinal boss)was analyzed.The finite element simulation results of tire inflation peripheral dimension and grounding data were consistent with the testing results,which proved the finite element model was accurate and reliable.The finite element simulation results showed that,the stress at the shoulder of the tire was concentrated at the end of the 2^(#) belt,and the extreme value of strain was also here,the stress and strain of shoulder were relatively large under the condition of transverse boss.Under the condition of transverse boss,the cord tension of 1^(#) belt increased obviously,and the carcass cord tension decreased in the contact area of boss.Under the condition of longitudinal boss,the cord tension in the contact area near the longitudinal boss at the end of the 1^(#) belt increased,and the cord tension of the carcass changed little.The envelope stiffness of the tire was about 3000 N·mm^(-1).The ultimate tear energy of the tire in the damage case was 672 J,and the tear energy index had important reference significance for formula designs.
作者
李淼
孙熙林
印海建
刘本鑫
张燕龙
LI Miao;SUN Xilin;YIN Haijian;LIU Benxin;ZHANG Yanlong(Techking(Qingdao)Special Tire Technology Research and Development Co.,Ltd,Qingdao 266100,China)
出处
《轮胎工业》
CAS
2024年第1期58-63,共6页
Tire Industry
关键词
工程机械轮胎
全地面起重机
特征路面
骨架材料
应力
应变
力学性能
有限元分析
off-the-road tire
all-terrain crane
characteristic pavement
skeleton material
stress
strain
mechanical property
finite element analysis
