Validation of container system component models for drops

Abstract

The validation of computational models that are used for simulating drops, shocks and other severely nonlinear environments has very different challenges to the validation of lower level vibration models. This paper details the tactics used for validating computational models for drop environments as applied to components of a container system, including the use of multi-code approaches and the use of testing and the techniques used to compare the data from the various sources, giving examples. When validating a model for a highly nonlinear environment, such as a drop, it is important to consider the question that the model is to answer. If the question is about the damage that occurs in terms of plastic deformation or fracture, a qualitative approach will be taken to validation, whereas if the question is about something measurable, such as acceleration or strain, the approach to validation will be quantitative.