摘要：复合材料夹层板广泛应用于各个领域，针对复合材料夹层板的应用现状，利用无损检测技术，对各种复合材料夹层板进行无损检测并对其力学性能进行分析，对保证复合材料夹层板的安全使用具有很大的必要性。

本文以复合材料夹层板为研究对象，采用导波检测法对其进行力学性能检测，利用ANSYS软件建模，进行数值模拟分析，通过设置不同材料、不同厚度的夹层模式，模拟导波对复合材料夹层板的检测，得到不同激励下复合材料夹层板应力、应变、位移的变化情况。根据模拟结果，对复合材料夹层板的力学特性进行分析，并比较不同材料、不同厚度夹层板的力学性能，为研究导波检测复合材料夹层板的应用以及各种复合材料夹层板的应用前景提供基本的思路。

关键词：超声导波；性能检测；夹层板；有限元

Abstract：The composite sandwich plate is widely used in various fields. According to the application status of the composite sandwich plate, the non-destructive testing of the composite sandwich plate is carried out by using the non-destructive testing technology and its mechanical properties are analyzed to ensure the safety of the composite sandwich plate Use has great necessity.

In this paper, the composite sandwich plate was used as the object of study. The mechanical properties of the composites were investigated by means of guided wave detection. The numerical simulation was carried out by ANSYS software. The composite materials were simulated by setting different materials and different thickness sandwich patterns Sandwich plate, the stress, strain and displacement of the composite sandwich plate under different excitation were obtained. According to the simulation results, the mechanical properties of the composite sandwich plate are analyzed and the mechanical properties of the  different materials and different thickness sandwich plates are compared. The application of the composite sandwich plate and the application prospect of the composite sandwich plate are studied. Basic ideas.

Key words: ultrasonic guided waves; performance testing ; composite material; finite element

目录

第一章绪论 1

1.1复合材料无损检测的研究背景 1

1.2国内外研究现状 1

1.3导波在复合材料中的数值研究进展 2

1.4导波检测复合材料夹层板的优越性 3

1.5有限元理论 3

1.5.1有限元的发展史、现状与展望 3

1.5.2有限元理论 5

1.5.3有限元相关软件的现状与发展 6

1.6本文的主要研究内容以及研究步骤 7

1.7本课题的研究意义 7

第二章复合材料及波的基本概念 8

2.1复合材料 8

2.2复合材料的特点 8

2.3波 9

2.3.1波的传播 9

2.3.2表面波 10

2.3.3导波 10

2.4本章小结 12

第三章复合材料夹层板的力学性能分析 13

3.1前言 13

3.2ANSYS的程序简介 13

3.2.1预备工作