柔性体仿真失败原因

甜甜的

将曲轴柔性体导入adams后仿真出现警告而且仿真失败，各位大侠帮忙看看是何原因呢？以下是警告信息：

WARNING:    The markers for JOINT MPRO_model.JOINT_27 are not initially coincident.
   The relative displacement between the markers, expressed in the
   J marker coordinate frame is:
   Delta X = -1.33021E-03   Delta Y = 3.86790E-05   Delta Z = 0.0.
WARNING:    The markers for JOINT MPRO_model.JOINT_28 are not initially coincident.
   The relative displacement between the markers, expressed in the
   J marker coordinate frame is:
   Delta X = -1.33021E-03   Delta Y = 3.86790E-05   Delta Z = 0.0.
WARNING:    The markers for JOINT MPRO_model.JOINT_29 are not initially coincident.
   The relative displacement between the markers, expressed in the
   J marker coordinate frame is:
   Delta X = 1.33021E-03   Delta Y = 3.86790E-05   Delta Z = 0.0.
WARNING:    The markers for JOINT MPRO_model.JOINT_30 are not initially coincident.
   The relative displacement between the markers, expressed in the
   J marker coordinate frame is:
   Delta X = 1.33021E-03   Delta Y = 3.86790E-05   Delta Z = 0.0.
WARNING:    The markers for JOINT MPRO_model.JOINT_31 are not initially coincident.
   The relative displacement between the markers, expressed in the
   J marker coordinate frame is:
   Delta X = 1.33021E-03   Delta Y = 3.86790E-05   Delta Z = 0.0.
WARNING:    The markers for JOINT MPRO_model.JOINT_32 are not initially coincident.
   The relative displacement between the markers, expressed in the
   J marker coordinate frame is:
   Delta X = 1.33021E-03   Delta Y = 3.86790E-05   Delta Z = 0.0.
WARNING:    The markers for JOINT MPRO_model.JOINT_33 are not initially coincident.
   The relative displacement between the markers, expressed in the
   J marker coordinate frame is:
   Delta X = -1.33021E-03   Delta Y = 3.86790E-05   Delta Z = 0.0.
WARNING:    The markers for JOINT MPRO_model.JOINT_34 are not initially coincident.
   The relative displacement between the markers, expressed in the
   J marker coordinate frame is:
   Delta X = -1.33021E-03   Delta Y = 3.86790E-05   Delta Z = 0.0.
WARNING:    The markers for JOINT MPRO_model.JOINT_44 are not initially coincident.
   The relative displacement between the markers, expressed in the
   J marker coordinate frame is:
   Delta X = 1.33021E-03   Delta Y = 3.86790E-05   Delta Z = 0.0.
WARNING:    The markers for JOINT MPRO_model.JOINT_27 are not initially coincident.
   The relative displacement between the markers, expressed in the
   J marker coordinate frame is:
   Delta X = -1.33021E-03   Delta Y = 3.86790E-05   Delta Z = 0.0.
WARNING:    The markers for JOINT MPRO_model.JOINT_28 are not initially coincident.
   The relative displacement between the markers, expressed in the
   J marker coordinate frame is:
   Delta X = -1.33021E-03   Delta Y = 3.86790E-05   Delta Z = 0.0.
WARNING:    The markers for JOINT MPRO_model.JOINT_29 are not initially coincident.
   The relative displacement between the markers, expressed in the
   J marker coordinate frame is:
   Delta X = 1.33021E-03   Delta Y = 3.86790E-05   Delta Z = 0.0.
WARNING:    The markers for JOINT MPRO_model.JOINT_30 are not initially coincident.
   The relative displacement between the markers, expressed in the
   J marker coordinate frame is:
   Delta X = 1.33021E-03   Delta Y = 3.86790E-05   Delta Z = 0.0.
WARNING:    The markers for JOINT MPRO_model.JOINT_31 are not initially coincident.
   The relative displacement between the markers, expressed in the
   J marker coordinate frame is:
   Delta X = 1.33021E-03   Delta Y = 3.86790E-05   Delta Z = 0.0.
WARNING:    The markers for JOINT MPRO_model.JOINT_32 are not initially coincident.
   The relative displacement between the markers, expressed in the
   J marker coordinate frame is:
   Delta X = 1.33021E-03   Delta Y = 3.86790E-05   Delta Z = 0.0.
WARNING:    The markers for JOINT MPRO_model.JOINT_33 are not initially coincident.
   The relative displacement between the markers, expressed in the
   J marker coordinate frame is:
   Delta X = -1.33021E-03   Delta Y = 3.86790E-05   Delta Z = 0.0.
WARNING:    The markers for JOINT MPRO_model.JOINT_34 are not initially coincident.
   The relative displacement between the markers, expressed in the
   J marker coordinate frame is:
   Delta X = -1.33021E-03   Delta Y = 3.86790E-05   Delta Z = 0.0.
WARNING:    The markers for JOINT MPRO_model.JOINT_44 are not initially coincident.
   The relative displacement between the markers, expressed in the
   J marker coordinate frame is:
   Delta X = 1.33021E-03   Delta Y = 3.86790E-05   Delta Z = 0.0.
WARNING:    The symbolic refactorization failed.  The matrix is structurally singular
   at time = 1.54622E-08.
WARNING:    ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   NOTE:  The set of redundant constraints has changed at time = 0.0.
   ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  
WARNING:    The symbolic refactorization failed.  The matrix is structurally singular
   at time = 3.86556E-08.
WARNING:    ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   NOTE:  The set of redundant constraints has changed at time = 0.0.
   ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
  
WARNING:    The symbolic refactorization failed.  The matrix is structurally singular
   at time = 1.54622E-08.
WARNING:    ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
   NOTE:  The set of redundant constraints has changed at time = 0.0.
   ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

brich19880310

系统出现了奇异矩阵，好好检查一下模型吧！检查检查运动副，驱动！

甜甜的

brich19880310 发表于 2012-3-31 11:25
系统出现了奇异矩阵，好好检查一下模型吧！检查检查运动副，驱动！

运动副和驱动都检查了，没发现不对的啊，请教一下模型有可能会是什么问题呢？

cwljiping

柔体与刚体之间的运动副有问题，运动副 柔体上的marker点不是在ANSYS里面建立的刚性区域的keypoints

沙漠之洲0

建议先把柔性体导入，然后再添加约束副和驱动

box117

我做了一个模型，就是一个mnf单纯导入建立固定副，施加载荷之后也出现楼主的错误，（载荷很小），而且查看固定副建立后，I、J坐标是一样的，就是仿真之后，出现这个警告