刚性基底弹性转动约束矩形板各受载条件下屈曲分析

TB12%O343.9; 为探究对于刚性基底上边界不同弹性转动约束刚度矩形板的单侧屈曲行为,研究了在刚性基底上弹性转动约束矩形薄板四边受线性压力和均布剪力屈曲的问题.采用Rayleigh-Ritz法,依据不同受载情况的屈曲形变提出合适的挠曲面函数,由板屈曲时能量的变分推得临界屈曲荷载理论解.运用相关性稳定验算公式,获得薄板在弯-剪复合应力下的屈曲公式.建立相关有限元模型,分析不同基底刚度和弯剪比对弯-剪复合屈曲应力的影响,并与一个半充填式钢箱-混凝土组合梁负弯矩区腹板屈曲试验结果比较.结果 表明:半充填混凝土作刚性基底时可简化为刚度系数略低于5的弹性基底....

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Published in上海交通大学学报 Vol. 56; no. 1; pp. 114 - 126
Main Authors 吴韬, 莫时旭, 向勇斌, 邹泽群, 郑艳
Format Journal Article
LanguageChinese
Published 桂林理工大学土木与建筑工程学院,广西桂林541004%桂林理工大学土木与建筑工程学院,广西桂林541004 28.01.2022
桂林理工大学广西岩土力学与工程重点实验室,广西桂林541004
Subjects
矩形薄板;Ritz法;刚性基底;弹性转动约束;临界屈曲系数;弯-剪复合应力
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ISSN1006-2467
DOI10.16183/j.cnki.jsjtu.2020.353

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Abstract TB12%O343.9; 为探究对于刚性基底上边界不同弹性转动约束刚度矩形板的单侧屈曲行为,研究了在刚性基底上弹性转动约束矩形薄板四边受线性压力和均布剪力屈曲的问题.采用Rayleigh-Ritz法,依据不同受载情况的屈曲形变提出合适的挠曲面函数,由板屈曲时能量的变分推得临界屈曲荷载理论解.运用相关性稳定验算公式,获得薄板在弯-剪复合应力下的屈曲公式.建立相关有限元模型,分析不同基底刚度和弯剪比对弯-剪复合屈曲应力的影响,并与一个半充填式钢箱-混凝土组合梁负弯矩区腹板屈曲试验结果比较.结果 表明:半充填混凝土作刚性基底时可简化为刚度系数略低于5的弹性基底.
AbstractList TB12%O343.9; 为探究对于刚性基底上边界不同弹性转动约束刚度矩形板的单侧屈曲行为,研究了在刚性基底上弹性转动约束矩形薄板四边受线性压力和均布剪力屈曲的问题.采用Rayleigh-Ritz法,依据不同受载情况的屈曲形变提出合适的挠曲面函数,由板屈曲时能量的变分推得临界屈曲荷载理论解.运用相关性稳定验算公式,获得薄板在弯-剪复合应力下的屈曲公式.建立相关有限元模型,分析不同基底刚度和弯剪比对弯-剪复合屈曲应力的影响,并与一个半充填式钢箱-混凝土组合梁负弯矩区腹板屈曲试验结果比较.结果 表明:半充填混凝土作刚性基底时可简化为刚度系数略低于5的弹性基底.
Author 郑艳
莫时旭
吴韬
向勇斌
邹泽群
AuthorAffiliation 桂林理工大学土木与建筑工程学院,广西桂林541004%桂林理工大学土木与建筑工程学院,广西桂林541004;桂林理工大学广西岩土力学与工程重点实验室,广西桂林541004
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WU Tao
ZOU Zequn
XIANG Yongbin
MO Shixu
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Keywords 矩形薄板;Ritz法;刚性基底;弹性转动约束;临界屈曲系数;弯-剪复合应力
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Title 刚性基底弹性转动约束矩形板各受载条件下屈曲分析
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