Additive Manufacturing of Lattice Structures: Fatigue Analysis

Abstract

Additive Manufacturing (AM) has revolutionized the design and production of lattice structures, enabling the creation of complex geometries with tailored mechanical properties. However, the fatigue behavior of these structures remains a critical concern, particularly in applications subjected to cyclic loading. This paper presents a comprehensive analysis of the fatigue performance of lattice structures fabricated through AM, focusing on the influence of unit cell geometry, material properties, relative density, and manufacturing parameters. Through a combination of experimental testing and numerical simulations, the study investigates the mechanisms of fatigue failure, including crack initiation and propagation, and develops predictive models for fatigue life. The findings highlight the significant impact of design and processing factors on the fatigue strength of lattice structures, providing valuable insights for the optimization of AM processes and the development of guidelines for the design of durable lattice-based components.