北京工业大学学报
北京工業大學學報
북경공업대학학보
Journal of Beijing University of Technology
2015年
11期
1644-1651
,共8页
柔顺机构%伪刚体模型%拐点%大变形梁%柔顺杆
柔順機構%偽剛體模型%枴點%大變形樑%柔順桿
유순궤구%위강체모형%괴점%대변형량%유순간
compliant mechanism%pseudo-rigid-body model ( PRBM )%inflection%large deflection beam%compliant link
为了分析柔顺机构中具有单拐点的大变形梁,基于伪刚体模型原理,提出一种用于模拟具有单拐点大变形梁的柔顺机构4R伪刚体模型. 以伪刚体模型拐点位置误差最小为目标函数,运用优化方法得到模型的最优特征半径系数,应用线性回归方法得出模型的刚度系数. 数值计算结果说明:提出的模型能够很好地模拟具有单拐点的柔顺杆末端及拐点位置.
為瞭分析柔順機構中具有單枴點的大變形樑,基于偽剛體模型原理,提齣一種用于模擬具有單枴點大變形樑的柔順機構4R偽剛體模型. 以偽剛體模型枴點位置誤差最小為目標函數,運用優化方法得到模型的最優特徵半徑繫數,應用線性迴歸方法得齣模型的剛度繫數. 數值計算結果說明:提齣的模型能夠很好地模擬具有單枴點的柔順桿末耑及枴點位置.
위료분석유순궤구중구유단괴점적대변형량,기우위강체모형원리,제출일충용우모의구유단괴점대변형량적유순궤구4R위강체모형. 이위강체모형괴점위치오차최소위목표함수,운용우화방법득도모형적최우특정반경계수,응용선성회귀방법득출모형적강도계수. 수치계산결과설명:제출적모형능구흔호지모의구유단괴점적유순간말단급괴점위치.
To analyze large deflections beams in compliant mechanisms, based on the Pseudo-Rigid-Body Model (PRBM), a 4R PRBM model was proposed for the large deflection beams with single inflection in compliant mechanisms. The characteristic radius factors of the model were determined via optimization with minimum difference of inflections and the spring stiffness coefficients of the model were obtained by using a linear regression technique. The numerical result shows that both the tip locus and inflection point of the compliant link with single inflection can be simulated precisely by using the model proposed in this paper.
