Inverse Sub-Structuring Method for Multi-Coordinate Coupled Product Transport System

Abstract

A new high‐accuracy transfer function is selected, and an inverse sub‐structuring method is developed for the analysis of the dynamic characteristics of a three‐sub‐structure coupled product transport system. The closed‐form analytical solution to inverse sub‐structuring analysis of multi‐coordinate coupled multi‐ sub‐structure product transport system is derived. The proposed method is validated by a lumped mass spring damper model; the predicted frequency response functions (FRFs) of sub‐structures and the coupling stiffness, in addition to the most concerned system‐level FRF, are compared with the direct computations, showing exact agreement. Then, FRF tests of a physical prototype of the multi‐coordinate coupled product transport system with three sub‐structures are performed to further check the accuracy of the suggested method. The method developed offers an approach to predict the unknown sub‐structure‐level FRFs and coupling stiffness purely from system‐level FRFs. The suggested method may help obtain the main controlling factors and contributions from the various structure‐borne paths for the product transport system, which may certainly facilitate the cushioning packaging design. Copyright © 2013 John Wiley & Sons, Ltd.

Measuring the mechanical and climatic conditions encountered by palletized products in handling and transport

“…In [56,57] it was also reconfirmed that results from the mathematic a model were quite close to the experimental measures.…”

“…An additional refining of this model was used in [56,57] with the aim of examining the dynamic behaviour of real systems in respect to real conditions of transport (as shown in figure 16 in the case of a fridge on a pick-up).…”

Indirect Inverse Substructuring Theory for Coupling Dynamic Stiffness Identification of Complex Interface Between Packaged Product and Vehicle Transport System

“…By applying the substructuring method, the system-level FRFs can be predicted from the componentlevel FRFs. First, take the structure D coupled by substructure A and substructure B as a system, and the FRFs of structure D can be expressed by the FRFs of substructure A and substructure B as 22,23 Then, take the system S as a coupled one by substructure D and substructure C (here, structure D is treated as a component), and the FRFs of the system S can be expressed by the FRFs of substructure D and substructure C as…”

Inverse Sub‐structuring Method for Rigidly Coupled Product Transport System based on Frequency Response Function Testing Probe Technique

“…13,14 Most recently, Wang further developed the inverse sub-structuring method for multi-component coupled system. [15][16][17] The inverse sub-structuring method for a three-component coupled system with single coordinate coupling and/or multi-coordinate coupling was proposed and applied to perform the parameter analysis of product transport system. Furthermore, a more generalized formulation of inverse sub-structuring method for multi-coordinate coupled system was derived.…”