ADAMS链传动仿真问题

时间: 2023-10-04 admin IT培训

ADAMS链传动仿真问题

ADAMS链传动仿真问题

ADAMS链传动仿真时出现的问题:

1、链条可以仿真转动,但个别链节间出现成固定角度无法转动的情况;

产生原因:可能是在进行链节间转动副配合时链节两侧转动副不同轴线

解决方法:对成固定位置的链节重新添加转动副约束,建议最好使用宏定义进行批量操作,手工添加易出现漏掉链节连接、转动副添加异常等问题。

2、链节仿真过程中出现仿真失败,可以分别通过修改步数、误差大小等对错误原因依次分析,如果最后判定是链轮、链条啮合问题,且链轮链条之间满足正确的传动关系;

解决方法:同问题1、链条仿真在哪个时刻停止,就对那个时刻主、从动轮开始啮合位置的链节转动副进行修改,重新添加。

出现错误的弹窗信息如下:(实际上是错误2,链轮和链节干涉)

错误: At time 1.667778362E+00 the integrator is unable to proceed. Possible Causes:

(1) The accuracy required for the numerical solution can not be attained.

Relax (increase) the value of the acceptable integration ERROR.

(2) Incompatible redundant constraints, a lock up, or a bifurcation

situation. The latter two indicate a mechanism design problem.

(3) The system includes a zero (or relatively small) mass on a part with

an unconstrained translational degree of freedom.

Make sure you have mass on all parts with translational degrees of freedom.

(4) The system includes a zero (or relatively small) inertia on a part

with an unconstrained rotational degree of freedom.

Make sure you have inertias on all parts with rotational degrees of freedom.

(5) An Adams element has a function expression that equals exactly itself.

For example,

SFORCE/id1,I=id2,J=id3,ROT,FUNC=SFORCE(id1,jflag,comp,rm),and

DIFF/id4,IMPLICIT,IC=0,FUNC=DIF1(id4).

Similarly,

VARIABLE/id5, FUNC=VARVAL(id5)*TIME

equals itself at 1 second. Avoid setting an Adams element equal to itself.

错误: Simulation failure detected.

错误: Simulation failure detected

以上方式均个人观点,仅供参考.