在使用通用有限元软件(如Abaqus,lsdyna,ansys)进行隐式分析计算(或静力分析,或动力学初始状态求解)时,对于复杂装配体模型,大家或多或少会遇到以下警告信息: “***WARING:THE SYSTEM MATRIX HAS *NEGTIVE EIGENVALUES.”即警告:系统矩阵出现了负特征值。往往产生这样的警告后,计算便很难收敛了。但也有例外,在接触...
***WARNING: THE SYSTEM MATRIX HAS 1 NEGATIVE EIGENVALUES. NEGATIVE EIGENVALUES MEAN THAT THE SYSTEM MATRIX IS NOT POSITIVE DEFINITE: F
system matrix 系数矩阵; 实用场景例句 全部 An equivalent simplification method was proposed for analyzing low - machine power systems. 这种等值简化方法可以有效降低系统矩阵的维数,并保留了原系统的全部特征值信息. 互联网 Q : WARNING : THE SYSTEM MATRIX HAS 1 NEGATIVE EIGENVALUES. ...
5 The area of 54 elements is zero, small, or negative. Check coordinates or node numbering, or modify the mesh seed. The elements 8 have been identified in element set ErrElemAreaSmallNegZero 这个一般是节点编号不对的问题。必须是逆时针方向。 6 The value of 256 MB that has been specified ...
***WARNING: THE SYSTEM MATRIX HAS 1 NEGATIVE EIGENVALUES. In an eigenvalue extraction step the number of negative eigenvalues is equal to the number of eigenvalues below the current shift point. This may be used to check that eigenvalues have not been missed. Note: the lanczos eigensolver ...
1 负特征值问题 THE SYSTEM MATRIX HAS 8 NEGATIVE EIGENVALUES. 负特征值是非线性分析的必然产物。所以不必大惊小怪,甚至久而久之,对于你熟悉的问题,你都会视而不见了。若出了问题,可先检查下有没有伴随的 numerical sigularity(数值奇异)和 Zero pivot(零主元)产生。如果没有,可以参考这几个方面: ...
the system matrix has 31 negative eigenvalues.怎么解决 我来答 1个回答 #热议# 公司那些设施可以提高员工幸福感?ji...2@163.com 2017-04-18 知道答主 回答量:4 采纳率:0% 帮助的人:2236 我也去答题访问个人页 展开全部 这就是英语 已赞过 已踩过< 你对这个回答的评价是? 评论 收起 ...
Ansys分析计算时..Ansys分析计算时出现the system matrix is unsymmetric卡住了,怎么解决?有没有大神,求教快毕不了业了
It's important to note that the .NET Framework has supported multithreaded development since its inception. The System.Threading namespace provides a plethora of low-level synchronization primitives, such as monitors, mutexes, semaphores, events, and thread-local storage, many of them since version ...
A continuous Gaussian kernel is a matrix of values that sum to 1.0; has the largest value in the center; and is radially symmetric. Here is a 5 x 5 Gaussian kernel with a standard deviation of 1.0: XML Copy 0.0030 0.0133 0.0219 0.0133 0.0030 0.0133 0.0596 0.0983 0.0596 0.0133 0....