整车NVH仿真创新方案基础.pdf

整车NVH仿真创新方案 NVH – 基础 Innovation Intelligence® Xin lianbiao, Senior Engineer, NVH Oct., 2013 Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved. Introduction to Automotive NVH 汽车NVH介绍 NVH - 2 Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved. What is NVH? Noise Vibration and Harshness (NVH) is an important vehicle attribute that directly affects the customers experience.噪声、振动 与舒适性是直接影响客户体验的重要汽车特性。 Modern vehicle development requires noise and vibration refinement to delivery high levels of customer acceptance and satisfaction. 现代汽车开发需要噪声与振动细化到可交付于客户 Napier’ Bentley of Chris Williams. Photo: Mark Ballard 高度的认可和满意。 This relates not only to perception of vehicle quality but also to driving experience and feedback (sound quality).这不仅事关汽车质 量的感觉，还需要驾驶经验与反馈（声品质）。 In practice, NVH is physics (or mechanics) applied to the control of the noise and vibration behavior of vehicle systems.事实上，NVH 是物理学（或是力学）应用于控制车辆系统的噪声或振动行为。 NVH - 3 Additional Images credit: Copyright © 2012 Altair Engineering, Inc. Proprietary and Confidential. All rights reserved. Source Receiver Concept 接收源概念 Decomposition of Problem 问题分解