钢材模型强化参数对构件滞回性能模拟的影响分析

为了考察材料本构模型参数对构件滞回性能模拟的影响,利用通用有限元软件ABAQUS对H形截面钢构件绕强轴压弯的滞回特性进行了数值模拟研究,对比分析了Ramberg-Osgood模型应变硬化指数和两折线模型强化率的参数取值对低周往复荷载作用下构件的极限抗弯承载力、极限后性能模拟结果的影响。分析表明,在所研究的材料强化参数变化范围内,构件极限抗弯承载力的相应变化是有限的;但构件的残余位移、耗能能力等大范围塑性变形阶段的模拟结果对两类材料模型强化参数均表现出很强的敏感性。基于以上分析结果,建议在对构件性能进行全过程数值模拟时应当谨慎地选用材料强化参数,并在必要时补充相应的材料性能试验。...

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Published inJianzhu Gangjiegou Jinzhan pp. 10 - 16
Main Authors 张婉越, 陈以一
Format Journal Article
LanguageChinese
Published Editorial Department of Progress in Steel Building Structures, Tongji University 01.01.2017
Subjects
压弯构件
数值模拟
材料模型强化参数
残余位移
滞回性能
Online AccessGet full text
ISSN1671-9379
DOI10.13969/j.cnki.cn31-1893.2017.01.002

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Abstract 为了考察材料本构模型参数对构件滞回性能模拟的影响,利用通用有限元软件ABAQUS对H形截面钢构件绕强轴压弯的滞回特性进行了数值模拟研究,对比分析了Ramberg-Osgood模型应变硬化指数和两折线模型强化率的参数取值对低周往复荷载作用下构件的极限抗弯承载力、极限后性能模拟结果的影响。分析表明,在所研究的材料强化参数变化范围内,构件极限抗弯承载力的相应变化是有限的;但构件的残余位移、耗能能力等大范围塑性变形阶段的模拟结果对两类材料模型强化参数均表现出很强的敏感性。基于以上分析结果,建议在对构件性能进行全过程数值模拟时应当谨慎地选用材料强化参数,并在必要时补充相应的材料性能试验。
AbstractList 为了考察材料本构模型参数对构件滞回性能模拟的影响,利用通用有限元软件ABAQUS对H形截面钢构件绕强轴压弯的滞回特性进行了数值模拟研究,对比分析了Ramberg-Osgood模型应变硬化指数和两折线模型强化率的参数取值对低周往复荷载作用下构件的极限抗弯承载力、极限后性能模拟结果的影响。分析表明,在所研究的材料强化参数变化范围内,构件极限抗弯承载力的相应变化是有限的;但构件的残余位移、耗能能力等大范围塑性变形阶段的模拟结果对两类材料模型强化参数均表现出很强的敏感性。基于以上分析结果,建议在对构件性能进行全过程数值模拟时应当谨慎地选用材料强化参数,并在必要时补充相应的材料性能试验。
Author 张婉越
陈以一
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SubjectTerms 压弯构件
数值模拟
材料模型强化参数
残余位移
滞回性能
Title 钢材模型强化参数对构件滞回性能模拟的影响分析
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