AN ANALYSIS OF PRODUCT DEVELOPMENT PROCESS CONFIGURATIONS WHERE AN A POSTERIORI FE CRITERION IMPROVES SIMULATION MODELS CONSISTENCY

摘要

A mechanical behavioural analysis can be useful at different stages of the product development process, and there are different scenarios where a FE (Finite Element) analysis can support the design phase. Unfortunately, preparing a model suitable for the FE analysis and solving a FE problem are time expensive and need a considerable involvement of simulation experts. In this paper, we analyze several scenarios of product development process, where an a posteriori criterion allows exploiting some existing FE analysis results. Their common denominator stands in the evaluation of the impact of the component shape modifications on the accuracy of existing FE results, by means of an a posteriori FE error indicator. It is computed using the stress and strain fields over the component. This indicator is targeted to determine whether a shape sub-domain has some influence over pre-existing FE analysis results, I.e. whether an accurate FE analysis needs to use a model including this sub-domain. Here, we will describe the input and output parameters of our a posteriori indicator and what are the requirements for its incorporation in the different scenarios. Each of the proposed scenarios will be analyzed and illustrated to identify its potentials and requirements.