HexFlex Mechanism Modeling by Design of Computer Experiments



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Springer London


Compliant mechanisms are an instance of mechanical devices designed to transfer or transmit motion, force, or energy from specified input ports to output ports by elastic deformation of at least one of its members -- The main advantage of compliant mechanisms with respect to traditional rigid-link mechanism is that fewer parts, fewer assembly process and no lubrication are required -- The HexFlex is a parallel compliant mechanism for nano-manipulating that allows six degrees of freedom of its moving stage -- This mechanism was designed for high precisión an repeatability -- This article presents a methodology to model compliant mechanisms behavior under quasi-static conditions using computer experiments, reducing costs of experimentation of product development -- The methodology is used to establish a mathematical model that relates the actuator forces at the input ports with the position and orientation the end-effector stage of the Hexflex -- This mathematical model has direct application in model-based control as an advantage with respect to other models, e.g. Finite Element Method -- The mathematical model of the HexFlex is achieved using metamodels -- The term methamodel is used to represent a simplified and efficient mathematical model of unknown phenomenon or computer codes – The metamodel of the HexFlex is performed from virtual analyses made using the Finite Element Method (FEM) -- Simulations of the metamodel were made founding good accuracy with respect to the virtual experiments


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@article{acosta_restr_durang_ruiz_2012, author = {Acosta, Diego and Restrepo, David and Durango, Sebastian and Ruiz, Oscar}, affiliation = {Universidad EAFIT - Lab CAD CAM CAE, Colombia}, title = {Design of computer experiments applied to modeling of compliant mechanisms for real-time control}, journal = {Engineering with Computers}, year={2012 (Online First TM)}, publisher = {Springer London}, issn = {0177-0667}, keyword = {Computer Science}, pages = {1-15}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84863322254&partnerID=40&md5=ab0f52688a066675f4967bdd965cd655}, note = {doi= 10.1007/s00366-012-0268-8},