从这里学NVH 噪声 振动 模态分析的入门与进阶（第2版）

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从这里学NVH 噪声 振动 模态分析的入门与进阶（第2版）

从这里学NVH 噪声 振动 模态分析的入门与进阶（第2版）

$47.00

Product Details
内容简介
主要介绍了工程噪声基础、工程振动相关知识、振动噪声信号采集与信号处理、试验模态测试与试验模态分析等NVH方面的内容。本书使用通俗易懂的语言来描述NVH实践所需的基础知识，极少使用繁琐的数学公式，这样更方便读者理解与应用。本书内容从实际应用出发，侧重实际工程问题与常用基本操作，即使是NVH初学者，也可轻松、准确地掌握NVH的基本概念与方法，快速提升NVH工程实践能力。本书可以作为机械制造、汽车、航天航空、土木工程、石油化工、海洋工程、船舶、家电等领域的工程技术人员和科研工作者从事NVH工作的参考书，也可以作为理工院校师生学习NVH的教材。
目　　录
第2版序言
第1版序言
自序
前言
致谢
绪论什么是NVH
第1章工程噪声基础
1.1什么是声波
1.1.1声波的定义
1.1.2声波的描述参数
1.1.3描述声波的基本物理量
1.1.4声波的传播特性
1.2什么是声音
1.2.1什么是纯音
前　　言
NVH是三个英文单词Noise、Vibration和Harshness首字母的缩写，是汽车噪声、振动和舒适性等各项指标的总称。这个名称来源于汽车行业，但其他行业正在慢慢接受它并使用它，所以，在本书中，我们仍用这个名称，而不是使用振动噪声，也不单单指车辆行业的NVH，而是广义的NVH，一切产品的振动噪声问题都属于这个范畴。由于结构振动会产生噪声，进而影响到舒适性，所以当舒适性有问题时，必然存在相应的振动噪声问题。三者在相关行业是同时出现且又密不可分的，因而常把它们放在一起进行研究。当今，产品的NVH性能越来越受到用户的重视，成为影响用户是否购买产品的重要因素之一，因此，各行各业在产品的研发阶段都非常注重NVH。从NVH分析手段来说，包括分析产品的基本NVH表现（基本的振动噪声评价）、模态分析、TPA（传递路径）分析和噪声源定位等方法。评价产品的NVH表现通常是指产品在其工作状态下评价其振动与噪声水平：振动噪声是否超标、是否有异响、是否符合相应的法规要求等。模态测试分析可以帮助用户评价现有结构的动态特性、控制结构的辐射噪声、降低产品的噪声水平、找到振动噪声产生的根源，以及进行结构动力学修改、产品优化设计、验证有限元模型、提高数字模型的精度等。通过模态分析，用户可以深入了解产品的动力学特性，使得系统动力学设计对产品开发决策带来积极的影响。用户也可以使用模态分析的结果来检测产品的变化或损坏，以便及时采取优化对策。按“输入振动系统响应”模型（也称为“源路径接收者”）来分类，评价产品的NVH性能主要是对响应进行分析，而模态分析则是分析振动系统的固有属性。阅读对象本书主要面向NVH的初级和中级人员，同时也为NVH高级人员提供有价值的参考。不管读者是试验NVH人员还是仿真NVH人员，本书都能为读者提供借鉴。所以本书既是入门参考书，也是建立全面知识体系的高级参考书。 初级人员：通过对本书的学习与实践，了解NVH基本概念与方法。 中级人员：在对NVH已有一定认识的基础上，通过对本书的学习可以加深理解与认识。 高级人员：通过全面系统的学习，能进一步建立自己的NVH知识体系。 试验人员：在本书可以找到很多试验过程中碰到的问题与解决方案，明白试验方法与深入理解试验背后的原理。 仿真人员：试验与仿真是产品研发过程中两种不同的方法，两者经常需要对标，因此，在本书中仿真人员除了可以找到NVH理论之外，还可深入了解试验原理与方法，对工作有极大的帮助。本书可以作为机械制造、汽车、航天航空、土木工程、石油化工、海洋工程、船舶、家电等领域的工程技术人员和科研工作者从事NVH工作的参考书，也可以作为理工院校师生学习NVH的教材。主要特色 本书 特色是使用通俗易懂的语言来描述NVH实践所需的基础知识，极少使用繁琐的数学公式，这样更方便读者理解与应用。 本书是作者自身长期NVH工作经验与总结的分享，因此，实用性更强。 本书内容从实际应用出发，侧重于实际工程问题与常用基本操作，即使读者是NVH初学者，也可轻松、准确地掌握NVH基本概念与方法，快速提升NVH工程实践能力。 本书理论知识点紧扣实践关键环节，既有理论介绍，又有典型工程实例，更方便读者加深理解。 本书每个知识点都会扩展介绍这个知识点的相关方面，更进一步深化并丰富NVH知识体系。 本书采用问答形式介绍NVH知识，因此，在阅读时或作为参考时，能方便快捷地找到想要的知识点。主要内容全书共分为六章，内容包括工程噪声基础、工程振动相关知识、振动噪声信号采集、振动噪声信号处理、试验模态测试与试验模态分析。绪论：对NVH的定义、工作内容、方法与手段做了介绍，方便初学者对NVH有一个初步的认识。第1章：工程噪声基础，偏向于噪声测量方面的基础知识。第2章：工程振动相关知识，介绍了振动要解决的问题，以及固有频率、FRF、动刚度等相关知识。第3章：振动噪声信号采集，就信号测试链中的各个环节进行讲解，包括传感器、导线、信号调理、抗混叠滤波器、ADC等方面。确保采集到的信号包含所需要的完整准确信息。第4章：振动噪声信号处理，从信号中提取有用的信息是信号处理的 终目的，这些信息可以帮助工程人员进行工程决策，解决实际工程问题，因此，正确地进行信号处理是前提。这章主要介绍信号处理中可能会遇到的各个环节。第5章：试验模态测试，试验模态测试分为锤击法和激振器法。本章主要介绍试验模态测试过程中的边界条件、测点分布、激励方式、参考点选择等内容。第6章：试验模态分析，获得精确的模态参数是模态分析的目的，但是在模态分析过程中有诸多因素导致产生错误的结果，因此，本章主要介绍模态分析过程中遇到的问题与细节。由于作者水平有限，难免会有错误出现，真诚欢迎广大读者批评指正，提出宝贵意见。作者的邮箱为linmue@qqcom。

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• Order Processing: Please allow 1-2 business days for order processing and preparation before shipment. 

• Domestic Shipping: Orders within the U.S. are shipped via USPS or FedEx, depending on the origin of the product. The average transit time is 3-7 business days. 

• International Shipping: Currently, we only ship within the USA. 

• Tracking Information: Every order is trackable. You will receive a tracking number once your order has been shipped. Products may be shipped from various global fulfillment centers.

Shipping Delays: 

Please note that shipping times may vary due to factors beyond our control, such as weather conditions, natural disasters, or peak holiday periods. While we strive to ensure timely delivery, the exact arrival time cannot be guaranteed and is managed by the shipping carrier.

Shipping Options:

  • Standard Delivery: Most orders are shipped within 3-7 business days. Larger items may utilize LTL shipping for safe handling.

  • Handling Time: We handle shipments on business days (Monday - Friday), with a preparation time of 1-2 days.

  • Additional Charges: Some items require additional shipping charges due to their size, weight, or special handling. These charges are specified on the product pages and are not eligible for shipping discounts.

  • Exclusions: Gift cards, packaging, taxes, and prior purchases do not count toward the minimum purchase requirement for free shipping. This offer is valid only for shipments to U.S. addresses, including Puerto Rico.

Delivery Details:

  • Estimates: Standard shipping within the US typically takes 3-7 business days. These are estimates and not guarantees.

  • Shipping Restrictions: We ship to all 50 states, Washington, DC, U.S. territories, and APO/FPO/DPO addresses. Shipping options vary based on the delivery address.

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内容简介
主要介绍了工程噪声基础、工程振动相关知识、振动噪声信号采集与信号处理、试验模态测试与试验模态分析等NVH方面的内容。本书使用通俗易懂的语言来描述NVH实践所需的基础知识，极少使用繁琐的数学公式，这样更方便读者理解与应用。本书内容从实际应用出发，侧重实际工程问题与常用基本操作，即使是NVH初学者，也可轻松、准确地掌握NVH的基本概念与方法，快速提升NVH工程实践能力。本书可以作为机械制造、汽车、航天航空、土木工程、石油化工、海洋工程、船舶、家电等领域的工程技术人员和科研工作者从事NVH工作的参考书，也可以作为理工院校师生学习NVH的教材。
目　　录
第2版序言
第1版序言
自序
前言
致谢
绪论什么是NVH
第1章工程噪声基础
1.1什么是声波
1.1.1声波的定义
1.1.2声波的描述参数
1.1.3描述声波的基本物理量
1.1.4声波的传播特性
1.2什么是声音
1.2.1什么是纯音
前　　言
NVH是三个英文单词Noise、Vibration和Harshness首字母的缩写，是汽车噪声、振动和舒适性等各项指标的总称。这个名称来源于汽车行业，但其他行业正在慢慢接受它并使用它，所以，在本书中，我们仍用这个名称，而不是使用振动噪声，也不单单指车辆行业的NVH，而是广义的NVH，一切产品的振动噪声问题都属于这个范畴。由于结构振动会产生噪声，进而影响到舒适性，所以当舒适性有问题时，必然存在相应的振动噪声问题。三者在相关行业是同时出现且又密不可分的，因而常把它们放在一起进行研究。当今，产品的NVH性能越来越受到用户的重视，成为影响用户是否购买产品的重要因素之一，因此，各行各业在产品的研发阶段都非常注重NVH。从NVH分析手段来说，包括分析产品的基本NVH表现（基本的振动噪声评价）、模态分析、TPA（传递路径）分析和噪声源定位等方法。评价产品的NVH表现通常是指产品在其工作状态下评价其振动与噪声水平：振动噪声是否超标、是否有异响、是否符合相应的法规要求等。模态测试分析可以帮助用户评价现有结构的动态特性、控制结构的辐射噪声、降低产品的噪声水平、找到振动噪声产生的根源，以及进行结构动力学修改、产品优化设计、验证有限元模型、提高数字模型的精度等。通过模态分析，用户可以深入了解产品的动力学特性，使得系统动力学设计对产品开发决策带来积极的影响。用户也可以使用模态分析的结果来检测产品的变化或损坏，以便及时采取优化对策。按“输入振动系统响应”模型（也称为“源路径接收者”）来分类，评价产品的NVH性能主要是对响应进行分析，而模态分析则是分析振动系统的固有属性。阅读对象本书主要面向NVH的初级和中级人员，同时也为NVH高级人员提供有价值的参考。不管读者是试验NVH人员还是仿真NVH人员，本书都能为读者提供借鉴。所以本书既是入门参考书，也是建立全面知识体系的高级参考书。 初级人员：通过对本书的学习与实践，了解NVH基本概念与方法。 中级人员：在对NVH已有一定认识的基础上，通过对本书的学习可以加深理解与认识。 高级人员：通过全面系统的学习，能进一步建立自己的NVH知识体系。 试验人员：在本书可以找到很多试验过程中碰到的问题与解决方案，明白试验方法与深入理解试验背后的原理。 仿真人员：试验与仿真是产品研发过程中两种不同的方法，两者经常需要对标，因此，在本书中仿真人员除了可以找到NVH理论之外，还可深入了解试验原理与方法，对工作有极大的帮助。本书可以作为机械制造、汽车、航天航空、土木工程、石油化工、海洋工程、船舶、家电等领域的工程技术人员和科研工作者从事NVH工作的参考书，也可以作为理工院校师生学习NVH的教材。主要特色 本书 特色是使用通俗易懂的语言来描述NVH实践所需的基础知识，极少使用繁琐的数学公式，这样更方便读者理解与应用。 本书是作者自身长期NVH工作经验与总结的分享，因此，实用性更强。 本书内容从实际应用出发，侧重于实际工程问题与常用基本操作，即使读者是NVH初学者，也可轻松、准确地掌握NVH基本概念与方法，快速提升NVH工程实践能力。 本书理论知识点紧扣实践关键环节，既有理论介绍，又有典型工程实例，更方便读者加深理解。 本书每个知识点都会扩展介绍这个知识点的相关方面，更进一步深化并丰富NVH知识体系。 本书采用问答形式介绍NVH知识，因此，在阅读时或作为参考时，能方便快捷地找到想要的知识点。主要内容全书共分为六章，内容包括工程噪声基础、工程振动相关知识、振动噪声信号采集、振动噪声信号处理、试验模态测试与试验模态分析。绪论：对NVH的定义、工作内容、方法与手段做了介绍，方便初学者对NVH有一个初步的认识。第1章：工程噪声基础，偏向于噪声测量方面的基础知识。第2章：工程振动相关知识，介绍了振动要解决的问题，以及固有频率、FRF、动刚度等相关知识。第3章：振动噪声信号采集，就信号测试链中的各个环节进行讲解，包括传感器、导线、信号调理、抗混叠滤波器、ADC等方面。确保采集到的信号包含所需要的完整准确信息。第4章：振动噪声信号处理，从信号中提取有用的信息是信号处理的 终目的，这些信息可以帮助工程人员进行工程决策，解决实际工程问题，因此，正确地进行信号处理是前提。这章主要介绍信号处理中可能会遇到的各个环节。第5章：试验模态测试，试验模态测试分为锤击法和激振器法。本章主要介绍试验模态测试过程中的边界条件、测点分布、激励方式、参考点选择等内容。第6章：试验模态分析，获得精确的模态参数是模态分析的目的，但是在模态分析过程中有诸多因素导致产生错误的结果，因此，本章主要介绍模态分析过程中遇到的问题与细节。由于作者水平有限，难免会有错误出现，真诚欢迎广大读者批评指正，提出宝贵意见。作者的邮箱为linmue@qqcom。

Shipping Overview: 

• Shipping: Standard Domestic Shipping within the United States charges USD 4.99. Standard International Shipping from United Kingdom, Germany and Japan to the United States charges 14.99. 

• Order Processing: Please allow 1-2 business days for order processing and preparation before shipment. 

• Domestic Shipping: Orders within the U.S. are shipped via USPS or FedEx, depending on the origin of the product. The average transit time is 3-7 business days. 

• International Shipping: Currently, we only ship within the USA. 

• Tracking Information: Every order is trackable. You will receive a tracking number once your order has been shipped. Products may be shipped from various global fulfillment centers.

Shipping Delays: 

Please note that shipping times may vary due to factors beyond our control, such as weather conditions, natural disasters, or peak holiday periods. While we strive to ensure timely delivery, the exact arrival time cannot be guaranteed and is managed by the shipping carrier.

Shipping Options:

  • Standard Delivery: Most orders are shipped within 3-7 business days. Larger items may utilize LTL shipping for safe handling.

  • Handling Time: We handle shipments on business days (Monday - Friday), with a preparation time of 1-2 days.

  • Additional Charges: Some items require additional shipping charges due to their size, weight, or special handling. These charges are specified on the product pages and are not eligible for shipping discounts.

  • Exclusions: Gift cards, packaging, taxes, and prior purchases do not count toward the minimum purchase requirement for free shipping. This offer is valid only for shipments to U.S. addresses, including Puerto Rico.

Delivery Details:

  • Estimates: Standard shipping within the US typically takes 3-7 business days. These are estimates and not guarantees.

  • Shipping Restrictions: We ship to all 50 states, Washington, DC, U.S. territories, and APO/FPO/DPO addresses. Shipping options vary based on the delivery address.

  • Remote Areas: Shipments to remote areas may incur additional charges or require pickup from a nearby shipping partner’s location.

Shipping Confirmation:

You will receive a shipping confirmation email with a tracking number as soon as your order is dispatched. If you do not receive this email immediately, please be assured that your items will arrive within the estimated delivery window provided at checkout.

Order Modifications:

If you need to cancel or modify your order, please contact our customer support immediately.

Issues with Delivery:

If your order shows as delivered but you have not received it, please contact the shipping carrier directly to resolve the issue. For persistent problems, contact our customer service at cs@everymarket.com.

Customer Support:

Our team is available 24/7 to assist you with any questions or concerns regarding your order. We are committed to ensuring a smooth shopping experience.

Return & Refund Policy Overview

Please review our return and refund policies below to ensure a smooth transaction process.

Return Policy

  • Duration: You have 30 days from receiving your item to initiate a return.

  • Condition: Items must be unworn, unwashed, with original tags and packaging intact.

  • Shipping Costs: Customers are responsible for return shipping costs.

  • Packaging: Ensure returned items are well-packaged to avoid damage during transit.

  • Tracking: Use a trackable and insured shipping method as we are not liable for items lost or damaged on return.

  • Initiating a Return: Contact us at cs@everymarket.com to start your return. We will provide a return shipping label and instructions upon approval. Returns without prior approval will not be accepted.

How to Return

  • Method: Returns must be sent back by mail to the address provided in the return instructions.

Return Label

  • Defective Products: Return labels are provided for defective items.

  • Non-Defective Returns: Customers are responsible for obtaining their return shipping label.

Product Conditions for Return

  • Eligible Products: Returns are only accepted for items in new condition.

Nonreturnable Items

Certain items are not eligible for return:

  • Electronic devices after 30 days (e.g., computers, laptops, Kindles)

  • Gift cards, prepaid game cards

  • Perishable goods, live insects, some jewelry, some health and personal care items

  • Customized or personalized products

  • Items with special shipping restrictions

Refund Policy

  • Window: Eligible products may be returned within 30 days of delivery for a refund.

  • Refund Method: Refunds are processed to the original payment method or as store credit for items purchased with gift cards.

  • Processing Time: Refunds are processed within 3-5 business days after we receive the return; please allow additional time for shipping and bank processing.

Claims

Inspect your order upon arrival and report any defects, damages, or incorrect items immediately to allow us to address the issue. For claims, contact our support team with details of the issue.

Exchange Policy

For the quickest service, return your original item and place a new order for the desired product once your return is accepted.

Return Address

EveryMarket Customer Service 2101 E Terra Ln, O'Fallon, MO 63366

Customer Support

Available 24/7 for any questions or assistance needed:

  • Phone: +1 636-312-5925

  • Email: cs@everymarket.com

 

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