2 docs tagged with "stiffness matrix"

In some instances a stiffness matrix may have been determined outside GSA. This can then be included directly onto the structure matrices during the analysis

Model stability analysis can be helpful in detecting the causes of ill conditioning in GSA models. As mentioned in model stability analysis theory, if a model is reported as being ill-conditioned in a static analysis, a model stability task can be setup and run. It is best to start with the default values of low and high stiffness modes requested. The task returns two sets of results.