摘要
为了减小柔性铰链的转动刚度,依据串并联关系,设计了S形折叠式柔性铰链。使用伪刚体法和能量法,建立了S形柔性铰链的刚度模型。利用ANSYS建立了该柔性铰链的有限元模型,对铰链进行了刚度和应力分析,并将其与理论值进行了比较,得到刚度误差约为3%,验证了刚度模型的准确性。当转角达到最大值±35°时,安全系数为4,符合设计要求。
According to principles of flexure hinge series and parallel relationship,a S-type foldable flexible hinge was designed in order to reduce flexibility and get a larger corner of the flexible hinges.Using pseudo rigid-body method and energy method,the stiffness model of S-type flexure hinges was deduced.By ANSYS,a finite element model of the flexible hinges was built,and the stiffness and stress analyses of the S-type hinges were carried out.It is found that the stiffness of errors are about 3% by comparing the simulation values and theoretical values.As a result,the stiffness model of S-type flexure hinges is proved right.When the rotational degrees about the flexure hinge are up to ±35°,the safety of factor is as 4.So the S-type foldable flexible hinges fully meet the design requirements.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2017年第14期1696-1700,共5页
China Mechanical Engineering
基金
国家自然科学基金资助项目(51505319)
太原理工大学校基金资助项目(2014TD040)
太原理工大学人才引进基金资助项目(tyut-rc201448a)
关键词
柔性铰链
伪刚体法
能量法
等效刚度
有限元分析
flexure hinge
pseudo-rigid-body method
energy method
equivalent stiffness
finite element analysis
