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《Journal of Engineering Design》 2008-01
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New dynamic analysis method for mechanism

LUO Yu-feng1,2,LIU Zhi-zhi1,SHI Zhi-xin1,YANG Ting-li3(1.School of Mechanical and Electrical Engineering,Nanchang University,Nanchang 330031,China;2.Xinyu College,Xinyu 338031,China;3.Jinling Petrochemical Corporation,Nanjing 210037,China)  
A new dynamic analysis method is proposed for increasing the universality and simplicity of dynamic response analysis.Mechanisms were decomposed into a series of ordered-SOCs(single opened chains).According to their forward order,firstly put imaginary inputs to the SOCs whose constraint factor is below zero,and then the kinematic equations with minimum dimension can be obtained after performing kinematic analysis on other ordered-SOCs.The universal dynamic analysis equations were deduced based on the principle of virtual work.Given the special value of generalized velocity and generalized acceleration,all the coefficients of the equations can be computed using the ordered-SOCs method,therefore the dynamic analysis equations can been acquired.The dynamic analysis equations are compact,and their dimensions are equal to the freedom degree of the mechanism.The numerical example of a 3-degree of freedom planar parallel mechanism has demonstrated its efficiency.
【Fund】: 国家自然科学基金资助项目(50275070)
【CateGory Index】: TH113
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