MODELING DISTORTION AND RESIDUAL STRESSES OF AN INDUCTION HARDENED TRUCK AXLE

摘要

ELECTROMAGNETIC AND THERMAL-STRESS MODELING OF INDUCTION SCAN HARDENING HOLD PROMISE FOR OPTIMIZING PART DESIGN, PREVENTING IN-PROCESS FAILURE, AND PREDICTING SERVICE PROPERTIES. Changes in thermal distribution throughout an induction hardening process create complicated phase transformations and stress evolutions in the component. Both residual stresses and mechanical properties of the hardened pattern have a significant impact on service performance of the heat treated parts. Induction hardening of steel components is a highly nonlinear transient process, and understanding the changes stresses, which are further used to analyze the mode and location of fatigue failures. Component geometry and process can also be optimized to reduce part weight, trim manufacturing costs, and improve performance.