Life Prediction of LENS Materials with Finite Element Analysis

Recent innovations in digital design and
manufacturing of advanced materials and components
have stimulated an important growth of
rapid-prototyping technologies in modern industries.
The Laser Engineered Net Shaping (LENS) is a
particular example of these technologies that may
create any kind of components from a 3D CAD solid
model with high accuracy. One of its main advantages
is the possibility of obtaining property gradients
along the component due to different cooling rates.
However, it is sometimes susceptible to pore formation.

A mathematical plasticity-damage model was utilized
to predict the mechanical behavior and life of
components manufactured under the LENS process,
considering certain levels of porosity, under
different conditions of loading, temperature and
strain rate to simulate real-life situations. These
predictions were validated with real monotonic and
cyclic tests performed in the laboratories, and later
on applied to high-performance automotive components.

This book covers the theory, calibration, simulations
and validation of the model, and should be especially
useful to researchers and professionals in the
materials and components design industries.

Autorentext
Rodolfo A. Gomez G., MSc: Masters Degree in Mechanical Engineering at Mississippi State University, USA. Research Engineer in New Materials and Emerging Technologies. BSc: Bachelors Degree in Mechanical Engineering at Universidad Simón Bolívar, Venezuela. Racing Car Prototypes Designer and Developer.

Klappentext
Recent innovations in digital design and manufacturing of advanced materials and components have stimulated an important growth of rapid-prototyping technologies in modern industries. The Laser Engineered Net Shaping (LENS) is a particular example of these technologies that may create any kind of components from a 3D CAD solid model with high accuracy. One of its main advantages is the possibility of obtaining property gradients along the component due to different cooling rates. However, it is sometimes susceptible to pore formation. A mathematical plasticity-damage model was utilized to predict the mechanical behavior and life of components manufactured under the LENS process, considering certain levels of porosity, under different conditions of loading, temperature and strain rate to simulate real-life situations. These predictions were validated with real monotonic and cyclic tests performed in the laboratories, and later on applied to high-performance automotive components. This book covers the theory, calibration, simulations and validation of the model, and should be especially useful to researchers and professionals in the materials and components design industries.