Development of Fabric Constitutive Behavior for Use in Modeling Engine Fan Blade-Out Events
Development of Fabric Constitutive Behavior for Use in Modeling Engine Fan Blade-Out Events
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DOI：
10.1061/(asce)0893-1321(2009)22:3(249
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发表时间：
2009-06
影响因子：
2.4
通讯作者：
S. Bansal;B. Mobasher;S. Rajan;I. Vintilescu
中科院分区：
文献类型：
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作者：
S. Bansal;B. Mobasher;S. Rajan;I. Vintilescu
开发坚固可靠的织物材料模型，用于防止推进发动机中的风扇叶片脱落事件，对于风扇遏制系统的设计具有重要意义。目前，凯夫拉纤维是唯一经美国联邦航空管理局批准用于风扇遏制系统的织物。然而，在建立基于机械的材料行为模型方面所做的工作非常少，特别是可用于量化凯夫拉尔在受到高速弹丸时的行为的模型。亚利桑那州立大学进行了实验静态和高应变率拉伸测试，以获得 Kevlar 织物的材料性能。在本文中，我们讨论了用于显式有限元程序的干织物本构模型的开发和验证。实验室测试（例如拉伸测试，包括高应变率测试、相框剪切测试和摩擦测试）的结果可得出定义本构模型所需的大部分材料特性。材料模型作为用户定义的子程序纳入 LS-DYNA 商业程序中。该模型的验证是通过数值模拟在 NASA-GRC 进行的实际弹道测试和在霍尼韦尔航空航天推进发动机进行的风扇叶片测试进行的。
The development of a robust and reliable material model for fabrics used to prevent fan blade-out events in propulsion engines has significant importance in the design of fan-containment systems. Currently, Kevlar is the only fabric approved by the Federal Aviation Administration to be used in fan-containment systems. However, very little work has been done in building a mechanistic-based material behavior model, especially one that can be used to quantify the behavior of Kevlar when subjected to high-velocity projectiles. Experi- mental static and high strain rate tensile tests have been conducted at Arizona State University to obtain the material properties of Kevlar fabric. In this paper we discuss the development and verification of a constitutive model for dry fabrics for use in an explicit finite-element program. Results from laboratory tests such as tension tests including high-strain rate tests, picture frame shear tests, and friction tests yield most of the material properties needed to define a constitutive model. The material model is incorporated in the LS-DYNA commercial program as a user-defined subroutine. The validation of the model is carried out by numerically simulating actual ballistic tests conducted at NASA-GRC and fan blade out tests conducted at Honeywell Aerospace Propulsion Engines.