基于LiToSim平台的金属围护结构软件研发

刘敏; 刘向; 冯志强; 顾水涛

doi:10.21656/1000-0887.440150

基于LiToSim平台的金属围护结构软件研发

doi: 10.21656/1000-0887.440150

刘敏^1,,
刘向^1,,
冯志强^2,,
顾水涛^1, ,

1.
重庆大学土木工程学院，重庆 400044
2.
西南交通大学力学与航空航天学院，成都 610031

(我刊编委冯志强来稿)

基金项目:

国家自然科学基金 52178457

重庆市全职博士后出站留(来)渝项目 2020LY08

详细信息

作者简介:
刘敏(1987—)，男，副教授(E-mail: liu.min@cqu.edu.cn)

刘向(1998—)，男，硕士生(E-mail: 2541448459@qq.com)

冯志强(1963—)，男，教授，博士生导师(E-mail: zhiqiang.feng@univ-evry.fr)

通讯作者:
顾水涛(1979—)，男，教授(通讯作者. E-mail: gust@cqu.edu.cn)

中图分类号: O334.3
计量
- 文章访问数: 280
- HTML全文浏览量: 91
- PDF下载量: 51
- 被引次数: 0
出版历程
- 收稿日期: 2023-05-15
- 修回日期: 2023-07-12
- 刊出日期: 2024-04-01

Software Development for Stand Seam Roof Systems Based on the LiToSim Platform

LIU Min^1
,,
LIU Xiang^1
,,
FENG Zhiqiang^2
,,
GU Shuitao^{1
, ,}

1.
School of Civil Engineering, Chongqing University, Chongqing 400044, P.R.China
2.
School of Mechanics and Aerospace Engineering, Southwest Jiaotong University, Chengdu 610031, P.R.China

(Contributed by FENG Zhiqiang, M. AMM Editorial Board)

摘要

摘要: 直立咬合金属围护结构在风荷载作用下易发生风揭破坏，目前缺少能数值模拟金属围护结构的等效节点模型以及有限元分析软件.该文首先根据围护结构的非线性风致响应提出了直立咬合金属围护结构的弹塑性等效弹簧节点模型，并推导出了弹塑性等效弹簧单元的有限元算法；然后将算法嵌入平台LiToSim中，研发出了金属围护结构的定制化软件LiToSpr；最后建模分析了结构响应，并与抗风揭实验对比，验证了定制化软件LiToSpr的适用性.软件LiToSpr能够模拟直立咬合金属围护结构的非线性风致响应，为工程设计提供一定参考.
- 定制化软件 /
- 弹塑性等效弹簧模型 /
- LiToSim平台 /
- 围护结构
Abstract: The stand seam roof is prone to failure under wind pressure. There is a lack of mechanical models and finite element analysis software that can numerically simulate the wind-induced response of stand seam roof systems. Firstly, the elastoplastic equivalent spring model for the stand seam roof was proposed according to the nonlinear wind-induced response of the structure, and the finite element algorithm for the elastoplastic equivalent spring element was derived, then the algorithm was embedded in the LiToSim platform to develop customized software LiToSpr for the stand seam roof. Finally, the structural responses were modeled, analyzed and compared with the anti-wind unmasking experiment results, to verify the applicability of customized software LiToSpr. The research indicates that, software LiToSpr can well simulate the wind-induced responses of the stand seam roof, and provides a reference for engineering design.
- customized software /
- elastoplastic equivalent spring model /
- LiToSim platform /
- stand seam roof
edited-by

edited-by
注释:

1) (我刊编委冯志强来稿)

HTML全文

图 1 弹塑性等效弹簧节点模型

Figure 1. The equivalent elasto-plastic spring model

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图 2 等效弹簧一致切线刚度和内力迭代流程图

Figure 2. The flowchart for the consistent tangent stiffness and spring internal force iteration

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图 3 LiToSim软件研发平台

Figure 3. The software development framework of the LiToSim platform

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图 4 LiToSpr新增的组织模块

Figure 4. The organizational structure of LiToSpr

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图 5 等效弹塑性弹簧几何及网格界面

注为了解释图中的颜色，读者可以参考本文的电子网页版本，后同.

Figure 5. Geometry and mesh of the equivalent spring element

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图 6 等效弹簧单元的属性界面

Figure 6. The software interface of the spring element

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图 7 求解器嵌入逻辑图

Figure 7. The logic of the embedded solver

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图 8 软件操作逻辑图

Figure 8. The software operation logic diagram

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图 9 屋盖几何以及网格

Figure 9. The roof geometry and mesh

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图 10 1 kPa均布风压作用下数值模拟出的屋盖位移以及应力云图

Figure 10. Stress and displacement nephograms simulated with the finite element method under 1 kPa wind pressure

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图 11 有限元和实验所得的测点D的荷载-位移曲线

Figure 11. Load displacement curves at test point D with the FEM and experiment

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图 12 风荷载作用下固定支架的响应

Figure 12. Responses of the clips under wind load

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表 1 部件材料参数

Table 1. Material parameters of the components

	elasticity modulus E/MPa	Poisson’s ratio μ	thickness t/mm	density ρ/(g/cm³)
roof sheathing	2.34E+5	0.3	0.76	7.85
purline	6.97E+4	0.33	3	2.71

下载: 导出CSV

表 2 弹塑性等效弹簧节点模型的弹塑性参数

Table 2. The parameter values of the spring model

parameter	a₀	a₁	m	b₁	b₂	γ₁	γ₂	K_V	K_X	K_θ
value	1 500	11 302	0.50	5.96	0.43	5.05	4.80	1 720	0.6	130

下载: 导出CSV

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