SUBSTRUCTURE COUPLING WITH JOINT IDENFICATION FOR RECONFIGURABLE MANUFACTURING SYSTEMS

Today’s manufacturing industries require rapid production of small batch sized products with great accuracy and productivity. When compared with traditional dedicated systems, reconfigurable manufacturing systems (RMS) offer rapid change in system configurations, machines and controls to adjust to flexible demands. This can be achieved by combining modular substructures together with different functionalities depending on requirements. In this study, a method of assembling the known dynamics of substructures is investigated through the receptance coupling approach. The classical receptance technique is enhanced by identifying the joint dynamics between substructures through experimental and finite element (FE) analyses. This identification method also includes the translational and rotational degrees of freedom responses, which represent the mass, spring, and damping elements of the joint. The determination of rotational responses can be very challenging, and the proposed method solves the rotational responses with two separate experimental measurements using gauge tools. This novel identification method overcomes the limitations posed by other identification methods, by minimizing numerical errors and problems associated with convergence. Experimental tests, using a fastener joint, were performed to verify the effectiveness of the joint identification method.

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