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《China Mechanical Engineering》 2016-19
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Design and Analysis of LEMs Planar Springs

Liu Kai;Cao Yi;Ding Rui;Jiangnan University;State Key Laboratory of Mechanical System and Vibration,Shanghai Jiao Tong University;  
To avoid vibrations and abrasions caused by the rotation of a planar spring in the deformation processes,a new planar spring was proposed based on LEMs.The planar spring with advantages including a small volume,easy to fabricate,a simple structure and no revolution during the deformation,etc.might be fabricated from planar materials and might emerge out of the fabricated planar materials.Firstly,the stiffness of the planar spring was deduced based on the flexural cantilever model and the pseudo-rigid-body model respectively.In order to verify the correctness of the theoretical stiffness formulations,the ANSYS model for this planar spring was established and the FEA was compared with theoretical results calculated by the flexural cantilever model and the pseudo-rigidbody model,respectively.The results indicate that the formula derived from model of cantilever leads to the calculation with higher accuracy when the deformation is small.In contrary,the formula derived from pseudo-rigid-body model applying to large deformation is better.Finally,the applicable ranges for the two above mentioned models were analyzed separately and a numerical example was given to demonstrate their correctness.
【Fund】: 国家自然科学基金资助项目(50905075);; 江苏省“六大人才高峰”资助项目(ZBZZ-012);; 机械系统与振动国家重点实验室开放课题资助项目(MSV201407);; 江苏省食品先进制造装备技术重点实验室开放课题资助项目(FM-201402)
【CateGory Index】: TH135
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