对考虑摩擦时机构力分析逐次逼近迭代方法的改进

THE MODIFIED STEPWISE APPROXIMATE ITERATION APPROACH FOR FORCE ANALYSIS OF MECHANISMS WHEN TAKING FRICTION INTO CONSIDERATION

当机构中不含有二力杆时,考虑摩擦的力分析一般采用逐次逼近迭代方法求解。本文针对目前通用的迭代方法所存在的不足,对迭代方法进行了改进,给出了新的速代方法,并编制了计算机程序。通过算例证明,本方法比未改进方法的收敛速度加快20—40％。

Force analysis of mechanisms not containing two force bars but taking friction into consideration is usually carried out by stepwise approximate iteration, In view of the defects of the current iteration approach,the author proposes a new iteration approach and a comperized program is compiled,to modify the existing methods. Computation shows that the modification attains the acceptable convergency faster by 20—40% than before.