abaqus的回弹分析？

压接端子在压接后进行回弹分析时，去除掉模具，对变形端子进行数据传递分析回弹。把与模具之间的接触作用和载荷都删掉，采用静力，通用分析，出现下面的错误。要怎么解决？

Too many attempts made for this increment。（这个是报错程序）

下面的是出现的警告

Displacement increment for contact is too big.（这个出现好多次）

The strain increment has exceeded fifty times the strain to cause first yield at 310 points（这个也出现好多次）

The strain increment is so large that the program will not attempt the plasticity calculation at 8 points （这个也出现好多次）

Excessive distortion at a total of 16 integration points in solid (continuum) elements （这个也出现好多次）

The system matrix has 63 negative eigenvalues.

Solver problem. Numerical singularity when processing node TERMINAL-1.136 D.O.F. 1 ratio = 100.E+09    .

Material/behavior grip has been redefined in the current analysis. Care must be taken to ensure that a consistent state can be maintained during the import procedure.