Early stage design optimization of an automotive crankshaft
P. du Cauze de Nazelle, LMT–ENS Cachan; A.
Hähnel, Renault
The crankshaft is one of the most important parts of an automotive
engine. Its design is constrained by a collection of multidisciplinary
criteria such as fatigue life, NVH behavior, mechanical friction,
manufacturing process … We propose a multi-objective
optimization scheme that aims at defining an optimal concept
in the early design stages. It relies on in-house codes and
OptiStruct topology and freeshape optimization technology
to reduce weight and mechanical friction loss (direct impact
on CO2 emissions) while guaranteeing up to standard behavior
with respect to fatigue life and NVH criteria.
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