Python脚本出错后如何告诉Abaqus继续？

Question

目前我正在编写一个 Python 脚本，我从 Abaqus CAE 开始。它的目的是为神经网络生成数据集。因此，脚本从之前定义的节点集中挑选一个随机节点，并在该节点上应用位移和旋转。然后它告诉 abaqus 求解该模拟，并在模拟完成后读取 odb 文件。之后，脚本将继续使用下一个随机选择的节点进行之前选择的迭代次数。 该脚本在代码方面工作得很好，但有时随机选择的位移和旋转输入对于 abaqus 来说太难解决了，所以它会因“增量错误”而崩溃（为这个增量做了太多的增量.. ..)。因此，目录中有一个 .lck 文件会阻止 Python 脚本访问读取 odb 文件，因此 Python 脚本也会崩溃。 我已经尝试通过编辑增量大小和最大增量数来修复这个错误，但是这两个想法都没有奏效。 我的最新想法是实现一个“if”条件，告诉 abaqus 删除所有“Job_1.*”文件并继续下一个节点和其他随机选择的输入变量，如果在作业之后直接存在 .lck 文件已经完成了。但这个想法也没有奏效。因此，我问你们，如果你们中的任何人知道我如何解决这个问题。发生此类错误后，有什么方法可以告诉 Abaqus 它应该继续使用另一个节点？ 这是代码：

import assembly  
import step  
import interaction  
import load  
import mesh
import optimization
import job
import sketch
import visualization
import xyPlot
import displayGroupOdbToolset as dgo
import connectorBehavior
from time import *
import datetime
import string
import odbAccess
from abaqus import getInput
from random import choice
from random import random
from math import pi
from math import sqrt
import os
import glob

def create_dataset(dataset_length):
    print "Start"
    global dataset
    a = mdb.models['Model-1'].rootAssembly
    n1 = a.instances['PART-1-1'].nodes 
    session.journalOptions.setValues(replayGeometry=COORDINATE, recoverGeometry=COORDINATE) 
    nodes1 =n1[157:159]+n1[190:194]+n1[198:200]+n1[201:209]+n1[239:247]+.... #Abaqus Node-Set for random pick
    nodesetlen=len(nodes1)
    i=0
    while i < dataset_length:  # while-Loop with the length of the requested dataset-length
        print "%i. Loop begins" %(i+1)
        k = choice(range(nodesetlen)) #random-index
        x = nodes1[k:k+1]  # random node out of the nodeset
        region = a.Set(nodes=x, name='BC_RH')  # Abaqus region definition (because the new node-position )
        datum = mdb.models['Model-1'].rootAssembly.datums[49] 
        mdb.models['Model-1'].DisplacementBC(name='BC_RH', createStepName='Step-1',
                                             region=region, u1=(random()*30),
                                             u2=(random()*30), u3=(random()*30),
                                             ur1=(random()*pi/4),
                                             ur2=(random()*pi/4), ur3=(random()*pi/4),
                                             amplitude=UNSET, fixed=OFF, distributionType=UNIFORM, fieldName='',
                                             localCsys=datum)  # Sets the inputs for the abaqus-Job_1
        mdb.jobs['Job_1'].submit(consistencyChecking=OFF) # submits the Job
        print "Job ist submitted"
        mdb.jobs['Job_1'].waitForCompletion() #Python waits for Abaqus until the Job is done
        print "Job is done"
        my_file = "U:/Job_1.lck"
        with open("Job_1.sta") as rfile:
            line = rfile.readlines()[-1]
        if line == " THE ANALYSIS HAS NOT BEEN COMPLETED\n":
            print "Increment Error next Loop will start"
            sleep(30) #just to be sure that Abaqus closed all files
        else:
             odb = openOdb(path='Job_1.odb') # Opens ODB-File
             # HERE ARE A LOT OF OUTPUT-CALCULATIONS IN THE REAL FILE
             # DOESNT INFLUENCE THE PROBLEM
             odb.close()
             i += 1
    print "Erfolgreich beendet"
    return dataset

dataset_length = 500
create_dataset(dataset_length)

这是 Abaqus CAE 中的错误：

1. Loop begins
Recent Node-Label:  22432
Job ist submitted
Job Job_1: Analysis Input File Processor completed successfully.
Error in job Job_1: Too many attempts made for this increment
Error in job Job_1: THE ANALYSIS HAS BEEN TERMINATED DUE TO PREVIOUS ERRORS. ALL OUTPUT REQUESTS HAVE BEEN WRITTEN FOR THE LAST CONVERGED INCREMENT.
Job Job_1: Abaqus/Standard aborted due to errors.
Job is done
Increment Error, next Loop will start
1. Loop begins
Recent Node-Label:  20996
Job ist submitted
Error in job Job_1: Abaqus/Standard Analysis exited with an error - Please see the  message file for possible error messages if the file exists.
Error in job Job_1: Abaqus/Standard Analysis exited with an error - Please see the  message file for possible error messages if the file exists.
Job Job_1 aborted due to errors.
Job Job_1 aborted due to errors.
Job is done

然后打印出 Python-error-Window 告诉我没有 .sta 文件。

Answer 1

使用 try 和 except 子句：

try:
   code goes here
except IncrementError:
   log error and continue

Answer 2

我建议使用 https://docs.python.org/2/tutorial/errors.html 的 try-except

try: 
   # do what needs to be done here
except Increment-Error:
    print "Oh no, and Incremental Error has happened!"

Answer 3

在您编辑的版本中，您仍然会在检测到故障后打开并尝试处理 odb。

你应该有（注意肯定）

   if line == " THE ANALYSIS HAS COMPLETED\n":
     odb = openOdb(path='Job_1.odb') # Opens ODB-File
      # HERE ARE A LOT OF OUTPUT-CALCULATIONS IN THE REAL FILE
      # DOESNT INFLUENCE THE PROBLEM
     odb.close()
   else:
     print "some error message"

我不明白为什么除了打印错误消息之外您还需要做任何事情，主循环将继续并创建一个新案例，不是吗？

我也愿意在提交工作之前做os.remove("Job-1.sta")。