大家都来看，求助，这是出了什么问题

错误文件中出了下列警告和错误，用的是SHELL181单元，进行非线性分析
*** WARNING *** CP = 6.484 TIME= 17:59:53
Hyper-elastic material may become unstable, material number 1 at
temperature 0.

*** WARNING *** CP = 12.750 TIME= 18:00:06
There are 11212 small equation solver pivot terms.

*** WARNING *** CP = 12.828 TIME= 18:00:06
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** CP = 12.844 TIME= 18:00:06
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** CP = 12.844 TIME= 18:00:06
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 12.844 TIME= 18:00:06
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 12.844 TIME= 18:00:06
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 16.781 TIME= 18:00:12
There are 10905 small equation solver pivot terms.

*** WARNING *** SUPPRESSED MESSAGE CP = 16.828 TIME= 18:00:12
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 16.828 TIME= 18:00:12
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 16.828 TIME= 18:00:12
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 16.828 TIME= 18:00:12
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 16.828 TIME= 18:00:12
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 20.641 TIME= 18:00:17
There are 10422 small equation solver pivot terms.

*** WARNING *** SUPPRESSED MESSAGE CP = 20.688 TIME= 18:00:17
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 20.688 TIME= 18:00:17
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 20.688 TIME= 18:00:17
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 20.688 TIME= 18:00:17
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 20.688 TIME= 18:00:17
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 24.500 TIME= 18:00:21
There are 9584 small equation solver pivot terms.

*** WARNING *** SUPPRESSED MESSAGE CP = 24.562 TIME= 18:00:21
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 24.562 TIME= 18:00:21
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 24.562 TIME= 18:00:21
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 24.562 TIME= 18:00:21
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 24.562 TIME= 18:00:21
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 28.344 TIME= 18:00:26
There are 8595 small equation solver pivot terms.

*** WARNING *** SUPPRESSED MESSAGE CP = 28.422 TIME= 18:00:26
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 28.422 TIME= 18:00:26
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 28.422 TIME= 18:00:26
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 28.422 TIME= 18:00:26
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 28.422 TIME= 18:00:26
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 32.203 TIME= 18:00:31
There are 8242 small equation solver pivot terms.

*** WARNING *** SUPPRESSED MESSAGE CP = 32.281 TIME= 18:00:31
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 32.281 TIME= 18:00:31
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 32.281 TIME= 18:00:31
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 32.281 TIME= 18:00:31
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 32.281 TIME= 18:00:31
Plane stress hyperelasticity did not converge for out of plane stretch.

*** WARNING *** SUPPRESSED MESSAGE CP = 32.281 TIME= 18:00:31
The unconverged solution (identified as time 1 substep 999999) is
output for analysis debug purposes. Results should not be used for
any other purpose.
哪位高手帮忙指点迷津，十分感谢。