按李军老师步骤自建的汽车前悬架模型不动？
小弟初学adams 建模前悬架 但是仿真不懂？请问各位高手解答，谢谢！以下是弹出的警告：
WARNING: The joint .FRONT_SUSP2.JOINT_10 has multiple MOTIONs constraining the same degree of freedom.
WARNING: The joint .FRONT_SUSP2.JOINT_10 has multiple MOTIONs constraining the same degree of freedom.
WARNING: The joint .FRONT_SUSP2.JOINT_10 has multiple MOTIONs constraining the same degree of freedom.
WARNING: The joint .FRONT_SUSP2.JOINT_10 has multiple MOTIONs constraining the same degree of freedom.
WARNING: JOINT FRONT_SUSP2.JOINT_10 has only one degree of freedom. Yet it has two MOTION's
having ID'sMOTION FRONT_SUSP2.MOTION_2 and MOTION FRONT_SUSP2.MOTION_1 acting on it. Only one MOTION
may be defined on joint that has only one degree of freedom.
WARNING: JOINT FRONT_SUSP2.JOINT_10 has only one degree of freedom. Yet it has two MOTION's
having ID'sMOTION FRONT_SUSP2.MOTION_3 and MOTION FRONT_SUSP2.MOTION_1 acting on it. Only one MOTION
may be defined on joint that has only one degree of freedom.
WARNING: JOINT FRONT_SUSP2.JOINT_10 has only one degree of freedom. Yet it has two MOTION's
having ID'sMOTION FRONT_SUSP2.MOTION_3 and MOTION FRONT_SUSP2.MOTION_2 acting on it. Only one MOTION
may be defined on joint that has only one degree of freedom.
WARNING: JOINT FRONT_SUSP2.JOINT_10 has only one degree of freedom. Yet it has two MOTION's
having ID'sMOTION FRONT_SUSP2.MOTION_2 and MOTION FRONT_SUSP2.MOTION_1 acting on it. Only one MOTION
may be defined on joint that has only one degree of freedom.
WARNING: JOINT FRONT_SUSP2.JOINT_10 has only one degree of freedom. Yet it has two MOTION's
having ID'sMOTION FRONT_SUSP2.MOTION_3 and MOTION FRONT_SUSP2.MOTION_1 acting on it. Only one MOTION
may be defined on joint that has only one degree of freedom.
WARNING: JOINT FRONT_SUSP2.JOINT_10 has only one degree of freedom. Yet it has two MOTION's
having ID'sMOTION FRONT_SUSP2.MOTION_3 and MOTION FRONT_SUSP2.MOTION_2 acting on it. Only one MOTION
may be defined on joint that has only one degree of freedom.
ERROR: JOINT FRONT_SUSP2.JOINT_10 has only one degree of freedom. Yet it has two MOTION's
having ID'sMOTION FRONT_SUSP2.MOTION_2 and MOTION FRONT_SUSP2.MOTION_1 acting on it. Only one MOTION
may be defined on joint that has only one degree of freedom.
ERROR: JOINT FRONT_SUSP2.JOINT_10 has only one degree of freedom. Yet it has two MOTION's
having ID'sMOTION FRONT_SUSP2.MOTION_3 and MOTION FRONT_SUSP2.MOTION_1 acting on it. Only one MOTION
may be defined on joint that has only one degree of freedom.
ERROR: JOINT FRONT_SUSP2.JOINT_10 has only one degree of freedom. Yet it has two MOTION's
having ID'sMOTION FRONT_SUSP2.MOTION_3 and MOTION FRONT_SUSP2.MOTION_2 acting on it. Only one MOTION
may be defined on joint that has only one degree of freedom.
ERROR: The system matrix has a zero pivot for column 126, which is associated
with MOTION/2 FORCE.Consequently, the matrix is numerically singular.
WARNING: ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
NOTE:The set of redundant constraints has changed at time = 0.0.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
ERROR: Abnormal termination encountered in Adams/Solver.
各位高手，经过修改之后，又变成了以下错误，望高手们相助，谢谢！
ERROR: The simulation stopped at time = 0.0.
The equations of motion can not be solved at this point because of a
singularity in the Jacobian matrix.This singularity is due to the
equation for PART FRONT_SUSP2.FRONT_SUSP ( PART/14 Xdot ).
ERROR: The matrix is numerically singular.
ERROR: Abnormal termination encountered in Adams/Solver. 我建议你在建模之前先把总体的自由度算好，确定悬架的自由度，什么地方改用什么铰链。李军的书做的是麦弗逊的悬架，和范例上的悬架还是有很大的差别的。如果你有时间，要好好研究它的范例，很多都值得深究的。 应该是约束的问题。你可以对右下角那个i按钮右键然后点那个箭头查看机构自由度，如果自由度是4的话就正确了。不是4的话就要修改。还有就是确保你模型的各个part都被定义了约束 很抱歉我不能帮你，但请求能不能将这本书传一份给我学习学习，万分感谢！我的邮箱：duanf_sir@163.com
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