Abstract
The questions of application of the LS-DYNA finite element analysis package for describing the interaction of a spherical projectile and a massive metal obstacle are considered. Based on a comparison of the results of numerical simulation with experimental data, a qualitative possibility has been shown to determine the magnitude of the dynamic hardness of the obstacle material.A simulation of the collision of a spherical impactor and a massive metal barrier shaped as a cube is performed. Data are obtained on the penetration of the striker into the barrier.Using the simulation curve, the values of the dynamic hardness of the obstacle were restored and a comparison was made with their experimental values. The qualitative correspondence is shown.
Highlights
To describe the complex phenomena that occur during the collision of deformable bodies with a high relative speed, it is necessary to know the mechanical characteristics of materials in a wide range of loading speeds
Accurate material properties are required for calibrating finite element models to ensure the reliability of numerical simulation results
Despite the fact that most loading processes are associated with the elastic reaction of a mechanical system, there are many applications that require modeling of the system taking into account plastic deformation
Summary
To describe the complex phenomena that occur during the collision of deformable bodies with a high relative speed, it is necessary to know the mechanical characteristics of materials in a wide range of loading speeds. Plastic deformation is a complex process, depending on temperature, strain rate, anisotropy of material properties, residual stresses and many other factors. Application packages, such as LS-DYNA or ABAQUS, can be used to model the behavior of materials under dynamic loading beyond the yield strength. One of the most important constituent parts of these packages, which determine the reliability of the calculations, are the defining relations used in them (mathematical models of behavior) and the criteria for destruction Since these models are used to calculate the behavior of the material beyond the yield strength, plasticity studies play an important role in the development of both the package itself and the properties of the materials studied. To verify the adequacy of the models used, it is necessary to develop and conduct some “model” field experiments
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
