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[前后处理] 请问各位轮胎的内胎怎么去模拟

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发表于 2010-10-14 07:06 | 显示全部楼层 |阅读模式

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请问各位轮胎的内胎怎么去模拟?谢谢

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发表于 2010-10-18 10:29 | 显示全部楼层
个人收集的一个例程,不过由于我没做过这个方面的,所以没用过,据说里边有一定的错误,你可以参考一下基本思路吧

ANSYS做的轮胎模型
  1. fini
  2. /cle
  3. /prep7
  4. /title,wheel-3

  5. !_____________________________________定义单元类型__________________________________________________

  6. et,1,45 !用来给土层,轮辋以及基层来分网格
  7. et,2,181

  8. !____________________________________________________________________________________________________

  9. !____________________________________定义轮胎材料参数_________________________________________________
  10. !___________________________定义超弹材料,用9常数模型(单位为MPa)___________________
  11. mp,ex,1,8000e6
  12. mp,prxy,1,0.4

  13. !____________________________定义正交弹性材料(单位为MPa)___________________________
  14. mp,ex,2,1.03e10
  15. mp,prxy,2,0.33

  16. mp,ex,3,2.1e11
  17. mp,prxy,3,0.3

  18. save,material4,db

  19. /prep7
  20. !_______________________________________定义道路几何参数___________________________________________
  21. areaload=0.557800e6 !单位mpa
  22. arearadiu=0.1066 !单位m
  23. top=0.5493
  24. thick1=0.04+top !单位m
  25. thick2=0.06
  26. thick3=0.07
  27. thick4=0.25
  28. thick5=0.27
  29. thick6=3.5
  30. distanceofaxie=1.5*arearadiu !两轮中心距

  31. rightb=1.50
  32. leftb=-1.50
  33. frontb=1.50
  34. backb=-1.50
  35. depthb=-(thick1+thick2+thick3+thick4+thick5+thick6)
  36. !___________________________________________________________________________________________________

  37. !______________________________________定义道路材料参数_____________________________________________
  38. ex1=1200e6 !单位MPa
  39. prxy1=0.35
  40. dens1=2.509e-03 !单位kg/m3

  41. ex2=1000e6
  42. prxy2=0.35
  43. dens2=2.447e-03

  44. ex3=1000e6
  45. prxy3=0.35
  46. dens3=2.432e-03

  47. ex4=1400e6
  48. prxy4=0.2
  49. dens4=2e-03

  50. ex5=800e6
  51. prxy5=0.2
  52. dens5=1.800e-03

  53. ex6=35e6
  54. prxy6=0.4
  55. dens6=1.900e-03
  56. !___________________________________________________________________________________________________

  57. !________________________________定义道路材料参数__________________________________________________
  58. mp,ex,4, ex1 !定义道路第一层材料参数
  59. mp,PRXY,4,prxy1
  60. mp,dens,4,dens1

  61. mp,ex,5, ex2
  62. mp,PRXY,5,prxy2
  63. mp,dens,5,dens2

  64. mp,ex,6, ex3
  65. mp,PRXY,6,prxy3
  66. mp,dens,6,dens3

  67. mp,ex,7, ex4
  68. mp,PRXY,7,prxy4
  69. mp,dens,7,dens4

  70. mp,ex,8, ex5
  71. mp,PRXY,8,prxy5
  72. mp,dens,8,dens5

  73. mp,ex,9, ex6
  74. mp,PRXY,9,prxy6
  75. mp,dens,9,dens6
  76. !__________________________________________________________________________________________________

  77. /prep7
  78. !______________________________建立轮胎模型_________________________________________________________
  79. k,1,0,0,0
  80. k,2,0,0,0.03
  81. k,3,0,0.01,0
  82. k,4,0.297,0,0
  83. k,5,0.297,0,0.2
  84. k,6,0.297,0,-0.2
  85. k,7,0.297,0,0.01
  86. k,8,0.297,0,-0.01
  87. k,9,2,0,0.01
  88. k,10,0,0,-0.005
  89. k,11,0,0,0.005
  90. k,12,0.4028,0,0
  91. k,13,0.5425,0,0
  92. k,14,0.4028,0.01,0
  93. circle,1,0.297,2,4,360,1
  94. l,5,6
  95. LGEN,2,4,,1,0.01
  96. l,6,19
  97. l,5,18
  98. lsel,s,,,4,7,1
  99. al,all

  100. lsel,all
  101. VDRAG,1,,,,,,1,2,3
  102. vsel,s,,,1,3,1
  103. vadd,all !4

  104. torus,0.4028,0.1362,0.1422 !1
  105. torus,0.4028,0.1422,0.1465 !2

  106. vsbv,2,4,sepo,dele,keep !3,5
  107. vdele,3

  108. vsbv,1,4,sepo,dele,keep !2,3
  109. vdele,2

  110. wpoffs,,, 0.110836
  111. WPSTYLE,,,,,,,,1
  112. wpstyle,0.05,0.1,-1,1,0.003,0,0,,5
  113. vsbw,4,speo,dele
  114. vdele,2

  115. wpoffs,,, -0.110836*2
  116. vsbw,1,speo,dele !轮辋宽0.11085
  117. vdele,4

  118. l,11,10 !40
  119. circle,11,0.297,2,7,360,1
  120. lsel,s,,,41,43,2
  121. lsel,a,,,56
  122. al,all !11
  123. lsel,all
  124. vdrag,11,,,,,,40 !1
  125. vsel,s,,,1,2
  126. vadd,all !4

  127. vsel,all
  128. vglue,3,4,5 !1内胎,2外胎,6轮辋

  129. !分网格

  130. HPTCREATE,area,11,, coord,0,0,0.005
  131. HPTCREATE,area,73,, coord,0,0,-0.005
  132. vsel,s,,,6
  133. type,1
  134. mat,3
  135. mshape,1,3D
  136. mshkey,0
  137. esize,0.04
  138. !要粗化
  139. vmesh,all
  140. vsel,all !1336,1178
  141. csys,0

  142. !给外轮胎分网格
  143. !HPTCREATE,area,21,, coord,0,0.5493,0
  144. vsel,s,,,2
  145. type,2
  146. mat,1
  147. mshape,1,3D !定义单元形状
  148. mshkey,0
  149. esize,0.02 !定义为自由网格
  150. !可能要局部粗化
  151. vmesh,all
  152. vsel,all

  153. !给轮胎束带层分网格
  154. vsel,s,,,1
  155. type,2
  156. mat,2
  157. mshape,1,3D
  158. mshkey,0
  159. esize,0.02
  160. !可能要局部粗化
  161. vmesh,all

  162. !在内胎的内面上施加面荷载
  163. !13,14,67-70
  164. asel,s,,,13,14
  165. asel,a,,,67,70,1
  166. nsla,s
  167. SF,all,pres,0.63e6 !压力单位为Pa
  168. csys,0
  169. save,finimodel,db

  170. /prep7
  171. !____________________________________________________定义路面_______________________________________________

  172. block,rightb,leftb,-top,-thick1,frontb,backb !3
  173. block,rightb,leftb,-thick1,-(thick1+thick2),frontb,backb !4
  174. block,rightb,leftb,-(thick1+thick2),-(thick1+thick2+thick3),frontb,backb !5
  175. block,rightb,leftb,-(thick1+thick2+thick3),-(thick1+thick2+thick3+thick4),frontb,backb!7
  176. block,rightb,leftb,-(thick1+thick2+thick3+thick4),-(thick1+thick2+thick3+thick4+thick5),frontb,backb!8
  177. block,rightb,leftb,-(thick1+thick2+thick3+thick4+thick5),depthb,frontb,backb!9

  178. vglue,3,4,5,7,8,9 !3,10,11,12,13,14

  179. vsel,s,,,3
  180. type,1
  181. mat,4
  182. mshape,1,3D !定义单元形状
  183. mshkey,0
  184. esize,0.0.5 !定义为自由网格
  185. vmesh,all

  186. vsel,s,,,10
  187. type,1
  188. mat,5
  189. mshape,1,3D !定义单元形状
  190. mshkey,0
  191. esize,0.15 !定义为自由网格
  192. vmesh,all

  193. vsel,s,,,11
  194. type,1
  195. mat,6
  196. mshape,1,3D !定义单元形状
  197. mshkey,0
  198. esize,0.18 !定义为自由网
  199. vmesh,all

  200. vsel,s,,,12
  201. type,1
  202. mat,7
  203. mshape,1,3D !定义单元形状
  204. mshkey,0
  205. esize,0.2 !定义为自由网格
  206. vmesh,all

  207. vsel,s,,,13
  208. type,1
  209. mat,8
  210. mshape,1,3D !定义单元形状
  211. mshkey,0
  212. esize,0.3 !定义为自由网格
  213. vmesh,all

  214. vsel,s,,,14
  215. type,1
  216. mat,9
  217. mshape,1,3D !定义单元形状
  218. mshkey,0
  219. esize,0.5 !定义为自由网格
  220. vmesh,all

  221. nsel,all
  222. vsel,all
  223. asel,all

  224. fini
  225. /solu

  226. !__________________________________给道路加约束_______________________________________________
  227. csys,0
  228. nsel,all
  229. nsel,r,loc,y,depthb
  230. d,all,all,0

  231. nsel,all
  232. nsel,r,loc,x,rightb
  233. nsel,a,loc,x,leftb
  234. d,all,ux,0

  235. nsel,all
  236. nsel,r,loc,z,frontb
  237. nsel,a,loc,z,backb
  238. d,all,uz,0

  239. save,pavemodel,db

  240. fini
  241. /prep7

  242. !______________________________加接触对_________________________________________
  243. r,1001
  244. et,11,targe170
  245. et,12,conta174
  246. KEYOPT, 12,2,1 !定义使用罚函数
  247. KEYOPT, 12,12,1 !定义为无限大,忽略滑动
  248. KEYOPT, 12,7,3 !对下一个子步预测一个最小的时间增量

  249. asel,s,,,22
  250. asel,a,,,100,101
  251. nsla,s
  252. !nsel,r,loc,y,-0.4,-0.5493,0.0001
  253. cm,_contact12,node
  254. type,12
  255. real,1001
  256. esurf,,buttom

  257. asel,s,,,9 !目标面,选择较为粗的网格
  258. nsla,s
  259. !nsel,r,loc,x,-0.8,0.8,0.0001
  260. !nsel,r,loc,z,-0.7,0.7,0.0001
  261. cm,_target12,node
  262. type,11
  263. real,1001
  264. esurf,,top
  265. save,contact,db
  266. fini

  267. fini
  268. /solu
  269. nsel,s,,,206
  270. nsel,a,,,412
  271. d,all,all,0
  272. !d,all,uy,0

  273. vsel,s,,,1,2
  274. nsel,r,loc,x,0
  275. d,all,ux,0

  276. vsel,s,,,1,2
  277. vsel,a,,,6
  278. nsel,r,loc,z,0
  279. d,all,uz,0

  280. antype,static

  281. asel,all
  282. nsel,all

  283. time,1
  284. solve

  285. 但是其接触部分的UY,UX方向位移明显错误(问题1)

  286. 当我把材料一改为超弹材料
  287. mp,ex,1,9000
  288. mp,prxy,1,0.49
  289. MPTEMP,,,,,,,,
  290. MPTEMP,1,0
  291. MPDATA,DENS,1,,1150
  292. TB,mooney,1,1,9,MOON
  293. TBTEMP,0
  294. TBDATA,,0.770,,0.0671,,,0.0955
  295. TBDATA,,,,,,,
  296. MPTEMP,,,,,,,,
  297. MPTEMP,1,0
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