非均匀温度影响下格栅夹芯结构微极梁等效方法

张锐; 冯亚; 杨硕

doi:10.21656/1000-0887.390086

非均匀温度影响下格栅夹芯结构微极梁等效方法

doi: 10.21656/1000-0887.390086

张锐^1,2,
冯亚¹,
杨硕^1,2

¹天津科技大学机械工程学院, 天津300222;²天津市轻工与食品工程机械装备集成设计与在线监控重点实验室, 天津 300222

详细信息

作者简介:
张锐（1985—），男，讲师，博士(通讯作者. E-mail: zhangrui19850424@tust.edu.cn);冯亚（1994—），女，硕士生(E-mail: fy19940704@tust.edu.cn);杨硕（1987—），男，讲师，博士(E-mail: yangshuo@tust.edu.cn).

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出版历程
- 收稿日期: 2017-12-26
- 修回日期: 2018-05-14
- 刊出日期: 2018-06-15

An Equivalent Micropolar Beam Method for Grid Sandwich Structures Under Inhomogeneous Temperature Conditions

¹College of Mechanical Engineering, Tianjin University of Science and Technology, Tianjin 300222, P.R.China;²Tianjin Key Laboratory of Integrated Design and OnLine Monitoring for Light Industry & Food Machinery and Equipment, Tianjin 300222, P.R.China

摘要

摘要: 通过胞元能量等效的方法，将格栅夹芯结构等效为连续的微极弹性材料，得到了等效微极弹性材料的本构关系.利用几何关系与平衡条件建立了微极梁受热变形的控制方程组，给出了微极梁位移随温度载荷变化的表达式.通过对比等效微极梁模型、夹层梁模型和ANSYS有限元软件计算的非均匀温度影响下悬臂格栅夹层梁受热弯曲变形的数值结果，验证了微极弹性等效的有效性.结果表明，将不连续的格栅夹芯结构等效为连续介质构成的模型时，由于约束的增加、自由度的减少，需要更多的应力、应变参量来描述其非局部的特性.
- 格栅夹芯结构 /
- 微极等效 /
- 温度载荷 /
- 非局部性
Abstract: The grid sandwich structure was equivalent to a continuous micropolar elastic material with the method of cell energy equivalence, and the constitutive relation of the equivalent micropolar elastic material was obtained. Based on the geometrical relation and the equilibrium condition, the governing equations for the micropolar beam with thermal deformation were established, and the expression of the variation of the micropolar beam displacement under temperature load was given. By means of a grid sandwich cantilever beam under inhomogeneous temperature conditions, the effectiveness of the micropolar elastic equivalent was verified through comparison of the thermal bending deformation results calculated with the equivalent micropolar beam model, the sandwich beam model and the ANSYS finite element software, respectively. The results also show that, more stress and strain parameters are needed to describe the nonlocality due to the increase of constraints and the decrease of degrees of freedom when the discontinuous grid sandwich structure is equivalent to a continuous medium model.
- grid sandwich structure /
- micropolar equivalence /
- temperature load /
- nonlocality

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参考文献(17)

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非均匀温度影响下格栅夹芯结构微极梁等效方法

doi: 10.21656/1000-0887.390086

作者简介:
张锐（1985—），男，讲师，博士(通讯作者. E-mail: zhangrui19850424@tust.edu.cn);冯亚（1994—），女，硕士生(E-mail: fy19940704@tust.edu.cn);杨硕（1987—），男，讲师，博士(E-mail: yangshuo@tust.edu.cn).

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An Equivalent Micropolar Beam Method for Grid Sandwich Structures Under Inhomogeneous Temperature Conditions

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留言板

非均匀温度影响下格栅夹芯结构微极梁等效方法

doi: 10.21656/1000-0887.390086

作者简介: 张锐（1985—），男，讲师，博士(通讯作者. E-mail: zhangrui19850424@tust.edu.cn);冯亚（1994—），女，硕士生(E-mail: fy19940704@tust.edu.cn);杨硕（1987—），男，讲师，博士(E-mail: yangshuo@tust.edu.cn).

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出版历程

An Equivalent Micropolar Beam Method for Grid Sandwich Structures Under Inhomogeneous Temperature Conditions

计量

出版历程

目录

作者简介:
张锐（1985—），男，讲师，博士(通讯作者. E-mail: zhangrui19850424@tust.edu.cn);冯亚（1994—），女，硕士生(E-mail: fy19940704@tust.edu.cn);杨硕（1987—），男，讲师，博士(E-mail: yangshuo@tust.edu.cn).