摘要
在判别约束下刚体能否运动的约束功率判据的基础上,提出了“约束加功率”这一概念,并将“约束加功率为零”作为区分被约束刚体瞬时运动与连续运动的数学判据。给出了被约束刚体连续运动的充分必要条件,揭示了瞬时运动机构的机构学本质。
Based on the restricting power criterion of distinguishing whether a restricted rigid body can moveor not, the concept of derivative of restricting power is presented, and it is employed as the criterion of distinguishing the motion of a restricted rigid body to be instantaneous or continuous. Sufficient and necessary conditions that a restricted rigid body can move continuously are presented, and the mechanics essentiality of instantaneous mechanisms is revealed.
出处
《燕山大学学报》
CAS
2000年第3期225-227,共3页
Journal of Yanshan University
基金
国家自然科学基金
博士点基金资助项目
关键词
螺旋理论
约束
连续运动
瞬时运动
机构学
screw theory, restriction, continuous moving, instantaneous moving.