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¹Department of Engineering Mechanics, State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an, China.

|December 15, 2023

概括

这项研究引入了一种先进的光学方法,以精确测量酸塑化聚乙烯 (NEPE) 推进剂的机械性能. 该研究准确地确定了NEPEE.

科学领域:

材料科学材料科学材料科学
机械工程机械工程
光学是什么?光学是什么?光学是什么?

背景情况:

越来越复杂的工程需要先进的测量技术来解决复杂的机械问题.
传统方法不足以准确地描述先进材料的3D形状和变形.
酸塑化聚乙烯 (NEPE) 推进剂,高能材料,具有独特的特性,挑战了传统的机械分析.

研究的目的:

为NEPE推进剂提出一种简单,高精度的光学测量方法.
为了研究NEPE的体积变化速率,波松比率和真应力-应变曲线.
为了分析NEPE在各种排位负载率下的机械行为.

主要方法:

使用失焦和数字图像相关性 (DIC) 方法进行精确的应变测量.
在单向拉伸过程中测量了NEPE的三维拉伸.
采用光学技术,以在不同的拉伸率下获得材料特性.

主要成果:

成功获得了NEPE的体积变化率,波松比率和真应力-应变曲线.
描述了NEPE在一系列拉伸速度的机械反应.
确定NEPE的损坏启动工程应变在不同的拉伸应变速率下为0.4687.

结论:

开发的光学方法提供了对NEPE推进剂力学的准确描述.
这项研究为了解NEPE在拉伸应力下的行为提供了关键数据.
这些发现有助于在工程领域安全有效地应用高能推进剂.

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