玻纤拉挤型材冲击状态下的材料阻尼参数研究  

Research on Material Damping Parameters of Glass Fiber Pultruded Profiles under Impact Conditions

作　　者：遇家运 刘佳 刘鑫燚 王宝瑞 梁岩 YU Jiayun;LIU Jia;LIU Xinyi;WANG Baorui;LIANG Yan(Harbin FRP Institude Co.,Ltd.,Harbin 150028)

机构地区：[1]哈尔滨玻璃钢研究院有限公司,哈尔滨150028

出　　处：《纤维复合材料》2024年第4期51-59,共9页Fiber Composites

基　　金：中国建材集团攻关专项资助(2023SJYL01)。

摘　　要：本文主要对玻璃纤维环氧树脂体系复合材料拉挤型材的材料阻尼参数进行了研究,通过对型材试样的制作、力学试验和落锤冲击试验,得到材料的弯曲模量和不同能量状态下的冲击变形。采用ANSYS有限元分析软件对玻纤/环氧拉挤型材在瞬态动力学冲击状态下进行模拟分析,设计了6种冲击能量,分析材料阻尼参数对其力学响应的影响。研究结果显示,玻纤/环氧型材在不同能量冲击过程中的材料阻尼不同,2 J和4 J时的材料阻尼达到0.0165,但将其应用至高能量冲击工况下,变形响应相差最多达79%,高能量冲击下仿真推到出的材料阻尼参数从0.0092逐渐降低至0.0018。这是由于受材料内耗机制的影响,冲击产生的振动能量不容易被耗散,导致材料阻尼系数降低。This article mainly studies the material damping parameters of glass fiber epoxy resin system composite pul-truded profiles.Through the production of profile samples,mechanical tests and drop hammer impact tests,the bending modulus of materials and the impact deformation under different energy states are obtained.ANSYS finite element analysis software was used to simulate and analyze the transient dynamic impact state of fiberglass/epoxy pultruded profiles.Six types of impact energy were designed to analyze the influence of material damping parameters on their mechanical response.The research results show that the material damping of fiberglass/epoxy profiles varies during different energy impact processes.The material damping reaches 0.0165 at 2 J and 4 J,but when applied to high energy impact conditions,the defromation response differs by up to 79%.The material damping parameters obtained from simulation under high energy impact gradu-ally decrease from 0.0092 to 0.0018.This is due to the influence of the internal friction mechanism of the materials,which makes it difficult to dissipate the vibration energy generated by impact,resulting in a decrease in the damping coefficient of the material.

关 键 词：复合材料 玻纤 材料阻尼 冲击 有限元仿真 

分 类 号：TB332[一般工业技术—材料科学与工程]