LS-dyna分析时遇到的问题

使用ANSYS-LSDYNA求解时遇到的问题-高手请进在分析某碰撞问题时总是遇到这样的问题而是求解无法运行，以下是MESSAG文件的内容：*** Error Memory is set 104798 words short Current memory size 20000000 Increase the memory size by one of the following where #### is the number of words requested: 1) On the command line set - memory=#### 2) In the input file define memory with *KEYWORD i.e., *KEYWORD #### or *KEYWORD memory=#### T i m i n g i n f o r m a t i o n CPU(seconds) %CPU Clock(seconds) %Clock ---------------------------------------------------------------- Initialization ....... 0.0000E+00 0.00 0.0000E+00 0.00 Element processing ... 0.0000E+00 0.00 0.0000E+00 0.00 Binary databases ..... 0.0000E+00 0.00 0.0000E+00 0.00 ASCII database ....... 0.0000E+00 0.00 0.0000E+00 0.00 Contact algorithm .... 0.0000E+00 0.00 0.0000E+00 0.00 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 0.0000E+00 0.00Problem time = 0.0000E+00Problem cycle = 0Total CPU time = 0 seconds ( 0 hours 0 minutes 0 seconds)CPU time per zone cycle = 0 nanosecondsClock time per zone cycle= 0 nanosecondsNumber of CPU's 1NLQ used/max 96/ 96Start time 11/20/2008 12:38:40 End time 11/20/2008 12:38:55 Elapsed time 15 seconds( 0 hours 0 min. 15 sec.) for 0 cyclesE r r o r t e r m i n a t i o n不知道该怎样解决这个问题？还想问一下：有三个物体设为A,B,C，A先运动后撞到B，B再作用给C，其中接触后A，B，C是接触的两者之间存在摩擦力，摩擦系数已知，B，C始终接触，这样的情况该怎样定义接触呢？在下不才，还请方家指点一二。