结构力学仿真软件：ADINA：复合材料结构分析技术教程.pdfVIP

结构力学仿真软件：ADINA：复合材料结构分析技术教程

1ADINA软件概述

ADINA(AutomaticDynamicIncrementalNonlinearAnalysis)是一款由美国

ADINARDInc.开发的高级有限元分析软件，广泛应用于结构力学、流体动力学、

热力学以及多物理场耦合分析等领域。在复合材料结构分析中，ADINA提供了

强大的工具，能够处理复杂的非线性问题，包括材料非线性、几何非线性和接

触非线性，使得工程师能够精确预测复合材料在各种载荷条件下的行为。

1.1ADINA在复合材料结构分析中的应用

复合材料因其轻质、高强度和高刚度的特性，在航空航天、汽车、能源和

体育用品等行业中得到广泛应用。然而，复合材料的结构分析比传统材料更为

复杂，因为它们的性能在不同方向上可能有很大差异，且在受到损伤时，其行

为也更为复杂。ADINA通过以下功能，简化了复合材料结构的仿真过程：

多层复合材料建模：ADINA允许用户定义多层复合材料，每层可

以有不同的材料属性和方向。

损伤和失效分析：软件内置了多种损伤和失效准则，如最大应力

准则、最大应变准则和Tsai-Wu准则，用于预测复合材料的损伤和失效

模式。

非线性分析：ADINA能够处理复合材料的非线性行为，包括大变

形、塑性、蠕变和超弹性等。

多物理场耦合：软件支持热-结构耦合分析，这对于复合材料在高

温环境下的性能评估至关重要。

2复合材料结构分析的重要性

复合材料结构分析对于确保结构的安全性和优化设计至关重要。通过精确

的仿真，工程师可以：

预测结构性能：在实际制造前，通过仿真预测复合材料结构在不

同载荷条件下的响应，包括应力、应变和位移。

评估损伤和失效：识别结构中可能的损伤和失效模式，这对于复

合材料结构尤为重要，因为它们的损伤往往不易察觉，且损伤累积可能

导致突然失效。

优化设计：通过分析结果，工程师可以调整复合材料的层合结构、

纤维方向和材料选择，以达到最佳的结构性能和成本效益。

验证和认证：在航空航天和国防等高风险行业，复合材料结构的

仿真分析是验证和认证过程的关键部分，确保结构能够满足严格的安全

标准。

1

2.1示例：使用ADINA进行复合材料层合板的静力分析

假设我们有一块由两层不同复合材料组成的层合板，尺寸为1mx1m，厚

度分别为0.5mm和0.3mm。第一层材料的弹性模量为100GPa，泊松比为0.3，

纤维方向为0°；第二层材料的弹性模量为80GPa，泊松比为0.25，纤维方向

为90°。层合板受到均匀分布的垂直载荷，大小为100N/m²。

在ADINA中，我们首先定义材料属性和层合结构，然后施加载荷并进行静

力分析。以下是一个简化的ADINA输入文件示例：

*ADINA

*PARAMETERS

NEL=100,NPT=3,LAYERS=2

*COORDINATESYSTEM

CARTESIAN

*MATERIAL

1,COMPOSITE,100.0,0.3,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,

0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.

0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,

0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.0,0.

0,