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Numerical study of the effect of torsional fatigue loading on the energy absorption of composite tubes

机译：扭转疲劳负荷对复合管能量吸收作用影响的数值研究

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Abstract >A three‐dimensional finite element model is developed to predict the effect of torsional fatigue loading on the energy absorption of unidirectional carbon/epoxy (AS4/3501‐6) composite tubes. Progressive fatigue damage model for fatigue loading and progressive failure model for axial velocity impact are implemented separately in the Abaqus software through user subroutine VUMAT. Each model is validated by the experimental data available in literature and good agreement is observed between the simulation results and experimental data. Then, these two models are sequentially applied to the composite tube with three different layups. The tube is first placed under torsional fatigue loading and a number of predefined loading cycles is applied. During this loading, the mechanical properties of the material are degraded based on sudden and gradual material properties degradation rules. Next, the fatigued tube is placed under axial impact loading. The results show that by increasing the number of fatigue cycles, the tube's ability to absorb energy is first reduced uniformly but in a particular cycle, due to the sudden drop in the shear mechanical properties of the material, the amount of energy absorption drops sharply and the tube loses its ability to absorb energy before it's catastrophic fatigue failure. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“Main”XML：Lang =“en”> <标题类型=“main”>抽象</ title> 开发了三维有限元模型，以预测扭转疲劳负载对单向碳/环氧（As4 / 3501-6）复合管的能量吸收的影响。通过用户子程序Vumat在ABAQUS软件中分别在ABAQUS软件中分别在ABAQUS软件中分别实施疲劳负载和渐进故障模型的渐进疲劳损伤模型。每个模型通过文学中可用的实验数据验证，在模拟结果和实验数据之间观察到良好的协议。然后，这两种模型被顺序地施加到具有三个不同叠加的复合管。首先置于扭转疲劳负载下的管，并施加多个预定义的装载循环。在该负载期间，基于突然和渐进的材料特性降解规则，材料的机械性能降低。接下来，疲劳管置于轴向冲击载荷下。结果表明，通过增加疲劳循环的数量，由于材料的剪切力学性能突然下降，管材吸收能量的吸收能力首先均匀地减小，因此突然下降，能量吸收量急剧下降急剧下降该管失去其在灾难性疲劳失败之前吸收能量的能力。</ p> </摘要> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-29566/'>《Polymer Composites》</a> <b style="margin: 0 2px;">|</b><span>2020年第2期</span><b style="margin: 0 2px;">|</b><span>共12页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/7852.html" title="增强塑料、填充塑料">增强塑料、填充塑料;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=composite tubes&option=203" rel="nofollow">composite tubes;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=energy absorption&option=203" rel="nofollow">energy absorption;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=impact&option=203" rel="nofollow">impact;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=torsion fatigue&option=203" rel="nofollow">torsion fatigue;</a> </p> <div class="translation"> 机译：复合管;能量吸收;撞击;扭转疲劳; 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