ls-dyna计算时自动跳出
我做的是一个块状物体和一个平板的碰撞模拟，计算一开始就自动跳出来了，请高手赐教！！！具体情况如下：
Date: 07/29/2007 Time: 10:25:57
___________________________________________________
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|LivermoreSoftwareTechnologyCorporation |
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|7374 Las Positas Road |
|Livermore, CA 94551 |
|Tel: (925) 449-2500Fax: (925) 449-2507 |
|www.lstc.com |
|_________________________________________________|
| |
|LS-DYNA, A Program for Nonlinear Dynamic |
|Analysis of Structures in Three Dimensions |
|Version:970 Date: 01/10/2005 |
|Revision: 5434a Time: 18:01:01 |
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|Features enabled in this version: |
| ANSYS Database format |
| Shared Memory Parallel |
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|Licensed to: |
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|Platform : |
|OS Level : WINDOWS XP |
|Hostname : wgy |
|Precision: Single precision (I4R4) |
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|Unauthorized use infringes LSTC copyrights |
|_________________________________________________|
Input file: aaa.k
The native file format : 32-bit small endian
Memory size from default : 8500000
expanding memory to 8500000
********notice********notice********notice********
* *
* This is the LS-DYNA Explicit Finite Element code. *
* Neither LSTC nor the authors assume any responsibility for *
* the validity, accuracy, or applicability of any results *
* obtained from this system. The user must verify his own *
* results. *
* *
* LSTC endeavors to make the LS-DYNA code as complete, *
* accurate and easy to use as possible. *
* Suggestions and comments are welcomed.Please report any*
* errors encountered in either the documentation or results*
* immediately to LSTC through your site focus. *
* *
* Copyright (C) 1990-2005 *
* by Livermore Software Technology Corp. (LSTC) *
* All rights reserved *
* *
********notice********notice********notice********
contracting memory to 26800
expanding memory to 99342
expanding memory to 129342
expanding memory to 191742
expanding memory to 222760
expanding memory to 284260
expanding memory to 312447
contracting memory to 2
LS-DYNA will perform a structural only analysis
LS-DYNA user input
ls-dyna (version 970 ) date 01/10/2005
expanding memory to 2387
expanding memory to 9980
expanding memory to 10130
expanding memory to 45434
expanding memory to 45914
contracting memory to 45874
expanding memory to 87288
expanding memory to 89289
contracting memory to 87498
expanding memory to 90327
expanding memory to 104101
expanding memory to 108103
expanding memory to 115012
expanding memory to 116971
expanding memory to 124801
expanding memory to 151336
expanding memory to 154388
contracting memory to 154380
expanding memory to 163023
contracting memory to 163023
contracting memory to 163023
expanding memory to 163103
contracting memory to 163103
expanding memory to 163105
contracting memory to 163105
expanding memory to 170619
The LS-DYNA time step size should not exceed 0.220E-04
to avoid contact instabilities.If the step size is
bigger then scale the penalty of the offending surface.
1 t 0.0000E+00 dt 1.38E-05 flush i/o buffers
1 t 0.0000E+00 dt 1.38E-05 write d3plot file
1 t 0.0000E+00 dt 1.38E-05 write ANSYS result file
*** Error negative volume in brick element # 201 cycle 1
*** Error negative volume in brick element # 202 cycle 1
*** Error negative volume in brick element # 203 cycle 1
*** Error negative volume in brick element # 204 cycle 1
*** Error negative volume in brick element # 205 cycle 1
*** Error negative volume in brick element # 206 cycle 1
*** Error negative volume in brick element # 207 cycle 1
*** Error negative volume in brick element # 208 cycle 1
*** Error negative volume in brick element # 209 cycle 1
*** Error negative volume in brick element # 210 cycle 1
*** Error negative volume in brick element # 211 cycle 1
*** Error negative volume in brick element # 212 cycle 1
*** Error negative volume in brick element # 213 cycle 1
*** Error negative volume in brick element # 214 cycle 1
*** Error negative volume in brick element # 215 cycle 1
*** Error negative volume in brick element # 216 cycle 1
*** Error negative volume in brick element # 217 cycle 1
*** Error negative volume in brick element # 218 cycle 1
*** Error negative volume in brick element # 219 cycle 1
*** Error negative volume in brick element # 220 cycle 1
*** Error negative volume in brick element # 221 cycle 1
*** Error negative volume in brick element # 222 cycle 1
*** Error negative volume in brick element # 223 cycle 1
*** Error negative volume in brick element # 224 cycle 1
*** Error negative volume in brick element # 225 cycle 1
*** Error negative volume in brick element # 226 cycle 1
*** Error negative volume in brick element # 227 cycle 1
*** Error negative volume in brick element # 228 cycle 1
*** Error negative volume in brick element # 229 cycle 1
*** Error negative volume in brick element # 230 cycle 1
*** Error negative volume in brick element # 231 cycle 1
*** Error negative volume in brick element # 232 cycle 1
*** Error negative volume in brick element # 233 cycle 1
*** Error negative volume in brick element # 234 cycle 1
*** Error negative volume in brick element # 235 cycle 1
*** Error negative volume in brick element # 236 cycle 1
*** Error negative volume in brick element # 237 cycle 1
*** Error negative volume in brick element # 238 cycle 1
*** Error negative volume in brick element # 239 cycle 1
*** Error negative volume in brick element # 240 cycle 1
*** Error negative volume in brick element # 241 cycle 1
*** Error negative volume in brick element # 242 cycle 1
*** Error negative volume in brick element # 243 cycle 1
*** Error negative volume in brick element # 244 cycle 1
*** Error negative volume in brick element # 245 cycle 1
*** Error negative volume in brick element # 246 cycle 1
*** Error negative volume in brick element # 247 cycle 1
*** Error negative volume in brick element # 248 cycle 1
*** Error negative volume in brick element # 249 cycle 1
*** Error negative volume in brick element # 250 cycle 1
*** Error negative volume in brick element # 251 cycle 1
*** Error negative volume in brick element # 252 cycle 1
*** Error negative volume in brick element # 253 cycle 1
*** Error negative volume in brick element # 254 cycle 1
*** Error negative volume in brick element # 255 cycle 1
*** Error negative volume in brick element # 256 cycle 1
*** Error negative volume in brick element # 257 cycle 1
*** Error negative volume in brick element # 258 cycle 1
*** Error negative volume in brick element # 259 cycle 1
*** Error negative volume in brick element # 260 cycle 1
*** Error negative volume in brick element # 261 cycle 1
*** Error negative volume in brick element # 262 cycle 1
*** Error negative volume in brick element # 263 cycle 1
*** Error negative volume in brick element # 264 cycle 1
*** Error negative volume in brick element # 265 cycle 1
*** Error negative volume in brick element # 266 cycle 1
*** Error negative volume in brick element # 267 cycle 1
*** Error negative volume in brick element # 268 cycle 1
*** Error negative volume in brick element # 269 cycle 1
*** Error negative volume in brick element # 270 cycle 1
*** Error negative volume in brick element # 271 cycle 1
*** Error negative volume in brick element # 272 cycle 1
*** Error negative volume in brick element # 273 cycle 1
*** Error negative volume in brick element # 274 cycle 1
*** Error negative volume in brick element # 275 cycle 1
*** Error negative volume in brick element # 276 cycle 1
*** Error negative volume in brick element # 277 cycle 1
*** Error negative volume in brick element # 278 cycle 1
*** Error negative volume in brick element # 279 cycle 1
*** Error negative volume in brick element # 280 cycle 1
*** Error negative volume in brick element # 281 cycle 1
*** Error negative volume in brick element # 282 cycle 1
*** Error negative volume in brick element # 283 cycle 1
*** Error negative volume in brick element # 284 cycle 1
*** Error negative volume in brick element # 285 cycle 1
*** Error negative volume in brick element # 286 cycle 1
*** Error negative volume in brick element # 287 cycle 1
*** Error negative volume in brick element # 288 cycle 1
*** Error negative volume in brick element # 289 cycle 1
*** Error negative volume in brick element # 290 cycle 1
*** Error negative volume in brick element # 291 cycle 1
*** Error negative volume in brick element # 292 cycle 1
*** Error negative volume in brick element # 293 cycle 1
*** Error negative volume in brick element # 294 cycle 1
*** Error negative volume in brick element # 295 cycle 1
*** Error negative volume in brick element # 296 cycle 1
*** Error negative volume in brick element # 297 cycle 1
*** Error negative volume in brick element # 298 cycle 1
*** Error negative volume in brick element # 299 cycle 1
*** Error negative volume in brick element # 300 cycle 1
1 t 1.3824E-05 dt-4.44E-06 write d3plot file
1 t 1.3824E-05 dt-4.44E-06 write ANSYS result file
E r r o r t e r m i n a t i o n
Memory required for explicit solution: 170619
Additional dynamically allocated memory: 4065
Total: 174684
T i m i n g i n f o r m a t i o n
CPU(seconds) %CPUClock(seconds) %Clock
----------------------------------------------------------------
Initialization ....... 0.0000E+00 0.00 0.0000E+00 0.00
Element processing ... 0.0000E+00 0.00 9.5000E-02 76.00
Binary databases ..... 0.0000E+00 0.00 1.5000E-02 12.00
ASCII database ....... 0.0000E+00 0.00 0.0000E+00 0.00
Contact algorithm .... 0.0000E+00 0.00 1.5000E-02 12.00
Contact entities ..... 0.0000E+00 0.00 0.0000E+00 0.00
Rigid bodies ......... 0.0000E+00 0.00 0.0000E+00 0.00
Implicit Nonlinear ... 0.0000E+00 0.00 0.0000E+00 0.00
Implicit Lin. Alg. ... 0.0000E+00 0.00 0.0000E+00 0.00
----------------------------------------------------------------
T o t a l s 0.0000E+00 0.00 1.2500E-01100.00
Problem time = 1.3824E-05
Problem cycle = 1
Total CPU time = 0 seconds ( 0 hours0 minutes0 seconds)
CPU time per zone cycle= 0 nanoseconds
Clock time per zone cycle= 178571 nanoseconds
Number of CPU's 1
NLQ used/max 96/ 96
Start time 07/29/2007 10:25:57
End time 07/29/2007 10:25:58
Elapsed time 1 seconds ( 0 hours0 minutes1 seconds)
E r r o r t e r m i n a t i o n The LS-DYNA time step size should not exceed 0.220E-04
to avoid contact instabilities.If the step size is
bigger then scale the penalty of the offending surface.
1 t 0.0000E+00 dt 1.38E-05 flush i/o buffers
1 t 0.0000E+00 dt 1.38E-05 write d3plot file
1 t 0.0000E+00 dt 1.38E-05 write ANSYS result file
是不是这个这个地方有问题，时间设置看看有没有问题，减小下时间步长
还有这出现负体积的现象，看看自己网格怎么样？，提高网格质量 我把时间步长减小了一些，总算可以计算了，但计算时间长的吓人，不过总算有进步，谢谢了，希望能进一步指导小弟啊
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