All car companies, as part of their vehicle design strategy, perform a variety of static as well as dynamic tests. Dynamic test procedures are fairly well defined and their results are relatively stable; changes in the test and analysis methods have a minimal effect on the test data. In contrast. static test procedures are poorly defined and their results are often unstable; differences in the
... [Show full abstract] test procedures may significantly affect the test data. This article presents a practical method for obtaining static stiffness values from a dynamic (modal) test, eliminating any dependencies of the static results on test and fixturing methods while providing the economy of a single test. These techniques have been successfully applied to a truck frame.