【毕设用---外文翻译来源】ANSYS英文论文 (59).pdf

Effective Virtual Prototyping to Optimise Whole-vehicle
Vibro-acoustics and Other Attributes
H Van der Auweraer, K Wyckaert, C F McCulloch, M Tournour
LMS International
Abstract
Engineering an automobile has an ever-increasing challenge: to satisfy peting
objectives for the attributes of the full vehicle. The vehicle development process is under
continuous pressure to reduce development time, reduce product cost, e up with
innovative designs by exploring more options. At the same time, customer demands and
product legislation keep pushing-out the required performance. One field of technology where
this is especially true, is vibro-acoustic performance.
The result is a demand to front-load the design analysis process. Virtual prototypes for vibro-
acoustics and other attributes offer a way to meet this demand, but the virtual prototyping
system must properly support the characterization, validation and improvement of the
functional performance ponents, subsystems and whole vehicles. This demands that
design analysis technologies are adapted and relevant to each stage of the cycle: concept and
planning, design and development, verification and production. The design analysis activity
must also be integrated into the wider design process and the overall business process.
The paper presents several enabling technologies, developed to facilitate virtual prototyping,
including: the integration of multiple functional-performance analysis techniques into a
seamless process; rapid conversion of models from one type to another; fast but accurate
computational methods for the solution of vibro-acoustic equations with the necessary
accuracy for robust design; and the capture of analysis sequences into processes which can be
repeated for trends analysis and optimisation. The need for correct load definitions and the use
of hybrid bining virtual models with experimental data are also discussed. The
methods are reviewed and illus