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模型检测结果如下:有两个过约束,仿真运行不了啊!请高手指点 一下啊!
447 Degrees of Freedom for .my_tractor_1
There are 2 redundant constraint equations.
This constraint: unnecessarily removes this DOF:
.my_tractor_1.msc_truck_drive_wheels.jolper_sse_jprim (Perpendicular Primitive_Joint) Rotation Between Zi & Zj
.my_tractor_1.msc_truck_drive_wheels.jorper_sse_jprim (Perpendicular Primitive_Joint) Rotation Between Zi & Zj
Model verified successfully
仿真出现如下错误:
Performing Static analysis...
The following equations impose the redundant constraints:
265 PERPI JPRIM/7 Zi.Zj
269 PERPI JPRIM/11 Zi.Zj
The mechanism has 2 redundant constraints which are equations that
remove the same degrees of freedom as other constraints imposed upon the
motion. The redundant constraints will be deactivated for the simulation.
=======================================================================
Note carefully: The constraint reaction forces corresponding to the
inactive constraints will be set to zero.
=======================================================================
Generating the Jacobian matrix for the statics or quasi-statics problem.
Jacobian Matrix Statistics for Statics
======================================================
Number of equations ............. = 3271
Number of non-zero entries ...... = 30626
Percentage of matrix non-zero ... = 0.28624
Total space used in MD array .... = 1106149
Symbolic refactorization attempted at time = 0.0.
The following equations impose the redundant constraints:
264 PERPI JPRIM/6 Zi.Zj
265 PERPI JPRIM/7 Zi.Zj
The mechanism has 2 redundant constraints which are equations that
remove the same degrees of freedom as other constraints imposed upon the
motion. The redundant constraints will be deactivated for the simulation.
=======================================================================
Note carefully: The constraint reaction forces corresponding to the
inactive constraints will be set to zero.
=======================================================================
---- ERROR ----
The simulation stopped at time = 5.2715 . Adams cannot solve
the equations of motion.
The greatest error in an equation is 1.42501E-04 in the
equation for GFORCE L_linear_uniform60.msc_truck_steer_wheels.tir_wheel.force .
The greatest change in a variable is 3.00677E-14 in the
variable for PART L_linear_uniform60.msc_truck_steer_suspension.ges_tie_rod .
Try the following in this order:
1. Use the MAXIT argument on the EQUILIBRIUM, IC, KINEMATICS,
or INTEGRATOR command to increase the maximum number of
iterations.
2. Temporarily change the value of the PATTERN argument on the
EQUILIBRIUM, IC, KINEMATICS, or INTEGRATOR command to
PATTERN = T.
3. Temporarily increase the value of the ERROR argument on the
EQUILIBRIUM, IC, KINEMATICS, or INTEGRATOR command at
time = 5.2715 .
4. If one or more forces change rapidly or sharply near
time = 5.2715, modify the force or forces.
---- ERROR ----
SIMULATE command failed for minimaneuver: UNIFORM
Aborting Execution.
Terminating Adams/Car usersubs...
Adams/Solver execution terminated by subprogram ERRMES |
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