NEi Explicit is a parallel explicit solver that is completely integrated within the NEi Nastran environment. NEi Explicit solves complex nonlinear material problems, large deformation contact problems, and very large multi million degree of freedom (DOF) static and quasi static models.  Existing Nastran users can directly analyze a Nastran implicit model in the NEi Explicit solver without any changes to the analysis file.

The NEi Explicit solver is well suited for these large types of nonlinear problems providing fast, robust performance because there are no matrices formed which means a small memory footprint for the model. The explicit architecture lends itself to highly scalable parallel performance, and large deformation contact solutions with highly nonlinear material behavior.

The contact surface definitions in NEi Explicit are fully consistent with the advanced contact options in our NEi Nastran offering. All contact formulations provide fully automatic contact tracking as we detect surface contact changes throughout the entire deformation process.

Material failure and element deletion options are available in the NEi Explicit module allowing sophisticated modeling of perforation and tearing of models under ballistic impact conditions. More details about NEiExplicit are avialable in additional material.