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免费版本2018-01-05
ETABS TO PERFORM-3D
Author: dinochen1983
Time: 2023-12-31
[小记]ETE2018是由陈学伟(DINO)与李明(LI MING)开发的集成程序,它可以完成结构概念设计
优化设计、模型转换、快速建模,快速验算与结构总信息统计的小程序,在设计的基础上开发,不是纯学术研究
满足工程人员对设计的极致要求。由于程序太巨大量,学习操作的教程会慢慢在DINOCHEN.COM上发布
有兴趣的工程师可以下载试用,我们定期会在微信公众号平台公布程序的最新进展
我们的微信公众号是 DINOSTRU , 或扫码关注, 微信的更新是永远最快的。
ETE2018
Author: dinochen1983
Time: 2023-12-27
ETABS to ABAQUS 内置于 ETE2018
ETABS to ABAQUS
Author: dinochen1983
Time: 2023-12-09
预览模式: 普通 | 列表

中洲观光门结构振动台试验
今天中洲观光门结构站振动台试验顺利完成,在广州大学的谭平老师,马玉宏老师,金建敏老师及陈建秋老师的努力下,准备了4个月的振动台试验终于完成了。作为分析小组的我们,看着自已设计的简化模型从电脑分析设计,到现场施工制作,直至振动台试验的完成,心里充满了喜悦。很难得的工程与科研的机会给我们这群小子遇上了。我们的分析小组,包括我,林生逸,吴培烽与毛贵牛四人在韩小雷才师及郑宜师兄的指导下,完成模型的分析与设计,最后协助广州大学完成试验方案。该结构非常复杂,包括以下特点:连体结构,高宽比大,钢混组合体系,异形墙肢,带粘滞阻尼器等等。虽然完成的试验,但后续的分析设计工作仍然需要继续,有试验资料作为辅助,可使工程分析更有信心。
The shaking table test of Zhongzhou Gate is finished today. With the help of Prof. Tang, Mrs. Ma, Mr. Jing and Mr. Chen, the test which is prepared for four month is finished perfectly. We, the other three students of my director and I, are the analysis team of the structure. Our job is to simulate the structure in computer, to analyze it, to design the model of it, to help the workers to build the model. When I saw the small scale model of the structure on the shaking table in the lab, I feel so happy. I think that is a very precious engineering experience and research opportunity for us. Under the direction of my professor, Mr. Han, we finally finished the test scheme and helped the lab of Univ. of Guangzhou to carry out. By the way, the building structure is very complicated, such as thin-and-tall, special-shape-pier, steel and concrete composite system, and viscous dampers. The test is over, however, the analysis and design work after the test should be continue. With the information and database of the test, we get more confidence for the analysis of engineering design.
更多的试验照片请看我的相册:http://www.dinochen.com/LoadMod.asp?plugins=album&class=11


工程分析小组:毛贵牛(风振分析)+陈学伟(总分析)+吴培烽(构件分析)

Program: SAP IV

Donwload: Sap4 Source Code

Title: Static and Dynamic Response of Linear Systems

Developer:  K-J. Bathe, E.L. Wilson and F. E. Peterson,
Department of Civil Engineering, University of California,
Berkeley 1973

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风振时程分析程序_windhist producer v1.0

总结一下去年的研究工作,其中有一项比较重要的就是“基于AR法的风振时程分析程序”的开发。这个程序主要是采用线性滤波法生成风速时程再通过转化变成风压力时程,主要是荷载数据的处理程序,而力学求解部分采用SAP2000或ETABS。程序界面如图所示。

通过面向对象的程序语言Borland Delphi 7.0编制具有前后处理及图形功能的风时程生成软件WINDHIST PRODUCERv1.0。该软件可实现通过导入SAP2000和ETABS生成的Excel表格,输入结构空间点分布。本软件可修改AR模型的阶次,积分精度、频率区间、计算步长等计算模型的参数,可调节计算模型的速度与精度。本软件的特色在于风荷载特性的输入与我国《荷载规范》紧密结合。程序可通过输入基本风压与地面粗糙度类别,按规范自动计算出梯度风高度、平均风指数和粗糙度系数并生成风速时程数据,也可以手动输入风特性参数。本软件还可以实现多样本时程的自动生成,可实现批量保存,批量导入SAP2000与ETABS的模型中,从而实现多样本的时程分析。
界面可见,非常的人性化,现在大部分风振研究大部分采用MATLAB来做,做出来的程序界面不友好,难与应用于实际工程。采用DELPHI编制界面以后,可以随时改变参数,马上生成风速曲线,且速度比MATLAB要快。
该程序的编写工作已写入论文《高层建筑结构风振时程分析软件的技术研究》将发表于《华中科技大学学报(城市科学版)》,在第八届全国结构计算理论与工程应用学术会议上发表。
Download:风振时程分析程序 windhist producer v1.0 技术说明文档 点击下载
风速模拟效果如下图所示。风振时程分析与《高钢规》简化公式的计算结果对比如图所示。以上内容在论文中均有提到。


 

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金土木结构软件全国用户大会将于2008年10月24日在北京召开!!
该会议论文集刊登了我们的四篇论文:
[1].基于纤维模型的超高层钢筋混凝土结构弹塑性时程分析及工程应用
.(原创)Perform-3D
[2].基于SAP2000 的复杂筏板基础分析与设计.(原创)SAP2000
[3].The Research of Time-History Response Analysis of Floor Vibration Based on Simulation of Group Walking.(已发表)SAP2000
[4].高层建筑结构风振时程分析及风速时程生成软件编制技术研究.(已发表)ETABS

北京一日游,从司马台长城穿越至金山岭长城


北京开了5天的14WCEE一直在开会而没有出去游玩北京,直到最后一天闭幕,在侯家健师兄的强力劝说之下,我决定与师兄一起去攀登司马台长城,并计划进行穿越,从司马台一直去到金山岭。我们在17号的下午出发,到晚上10点终于到了司马台的山脚下。第二天,我们六点半出发,从司马台出发,徒步穿越了一个又一个的炮台。在路上,风光无限。10月份的北京是最美丽的。大家可以看看相册的一些图片摘录。
司马台的相册:http://www.dinochen.com/LoadMod.asp?plugins=album&class=10
穿越完已经是12点钟了,我们再坐车去机场,最后离开了首都北京。终于,完成了“不到长城非好汉”的使命了。
I feel so tied when we were finished the five-day conference (14th world conference of earthquake engineering). That is my first time to Beijing, but I was so busy for the conference and has no chance to play outside. Finally, on the day before I would fly back to Guangzhou, I decided to go and play in Beijing. Simatai great wall is the best choice for me. Kent Huo is my partner and my tour guider in the journey. He has a perfect plan of that journey. We choose the cheapest journey to the Simatai. We started on 17th afternoon, and then took a long time but cheap bus to a place near Simatiai, and we shifted to Simatai by taxi. Finally, we reach Simatai at 10:00 pm. We were so tied and had a rest immediately. The second day, we started at early morning to go to visit the beautiful great wall. We walked throught the great wall form one emplacement to another, finally to reach the other point name Jingshanling great wall. It’s a very very long distance to walk, about 5 hours. However, the scene of every emplacement is very beautiful. So we also took a lot of pictures. I think the Beijing of October is the most beautiful. The pictures I took had put on internet in my website.

Dynamic Inelastic Numerical Simulation for a Shaking Table Test of a Full Scale Steel Moment Frame Structure based on OpenSEES
Chen Xuewei Han Xiaolei Jack CHEANG Lin Shengyi Mao Guiniu

ABSTRACT :
This paper presents a Dynamic nonlinear numerical simulation of a 4-story full-scale steel moment frame structure based on OpenSEES. Fiber model which has fewer DOFs is used for structure member simulation.
The responses of the structure under frequent, moderate and severe ground motions are predicted prior to the full-scale shake-table test. Correlated with the experimental results, the analytical results confirm the accuracy of the numerical simulation method, in both representing the inelastic behavior and the failure mechanism. The seismic responses and the collapse moment under severe ground motion are precise predicted. The study establishes the validity of the inelastic analysis method of overall structure based on fiber model, which is suitable for seismic analysis of overall structure.

KEYWORDS: Inelastic Time-History Analysis, Steel Frame, Full Scale Specimen, Shaking Table Test, Blind Analysis

Download:Dynamic Inelastic Numerical Simulation for a Shaking Table Test of a Full Scale Steel Moment Frame Structure based on OpenSEES

Numerical Analysis of Cyclic Loading Test of Shear Walls based on OpenSEES
Han Xiaolei Chen Xuewei Jack CHEANG Mao Guiniu Wu Peifeng

ABSTRACT :
Neither the original structure nor the altered structure of the Garden Hotel in Guangzhou accords with the ductile details of seismic design based on current Chinese codes. In order to explore the seismic performance of the original shear wall structure and the altered shear wall structure, the cyclic loading testes of the shear walls with different reinforcement ratio and constructional details are carried out. This paper presents the numerical analysis of the cyclic loading testes of shear walls with SWNA (Shear Wall Nonlinear Analysis) program. SWNA program is secondary developed based on OpenSEES and MVLEM. Compare with the testes, the numerical results confirmed the accuracy of this analysis procedure in representing the nonlinear behavior of the shear wall, such as the shifting of natural axis, shear deformation, local collapse and collapse mechanism. The analysis procedure based on MVLEM, which saves the calculating cost due to fewer DOFs, can stimulate the nonlinear behavior of the shear wall, and fit for global inelastic analysis and performance based design of tall building structure.

KEYWORDS: Shear wall, Cyclic loading test, OpenSEES, MVLEM, Nonlinear analysis

Download:Numerical Analysis of Cyclic Loading Test of Shear Walls based on OpenSEES.pdf

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2008年10月13日至17日,在北京市九华山庄召开了第十四届世界地震工程大会。大会分keynote, oral presentation, poster presentation and exhibition 四个环节。各个环节都很精彩,可是我分身乏术,我只能参加我感兴趣的几个section,如数值分析方法,混凝土结构及倒塌分析等。在会中见到很多国际知名的结构分析专家,如我的偶像而未曾见过面的,曾经帮过我很大忙的Matej Fischinger教授,kasai教授,Hikino博士等等。而且与久仰的结构大师Kabeyasawa见面及合照。
通过这个会议认识了很多大牛,还有认识了一个志同道合的Berkeley的学生,在coffee shop聊opensees的开发聊了很久,这个会议是国际地震工程学术的交流平台。在presentation里面,学到很多国际先进的试验及分析技术。我在POSTER里面宣讲我的两篇关于OPENSEES的论文,呵呵,在宣讲时也认识了一些朋友。这个会议太难忘了,于是如无意外,我会继续参加15wcee的。
The 14th conference of earthquake engineering is hold in Qiuhua hotel in Beijing on 13th October 2008. The conference for engineers work on earthquake is just like the Olympic game for athlete. The engineers and researchers form many countries has come here to discuss, to communicate, to learn and to see. The conference is made up by four parts: Keynote, oral Presentation, Poster Presentation and Exhibition. Every part of it is very wonderful. oral presentation and Poster Presentation are parallel, but I cannot divide myself into two parts, so I could only join several sections which I am very interested in. For example, simulation methods, concrete structure and collapse analysis. In the conference, I meet a lot of famous researchers such as Prof. Matej Fischinger who had help me a lot in my research but we just contact by Email. After the conference I had meet some new friend, some PhD students, such as Mr. Andreas. We meet in the coffee shop of the hotel. We talked about the technical problem about “OpenFresco” in the evening. The conference is the best communicate platform for academe of earthquake engineering. In the Presentation I have learned a lot of advanced technology of analysis and experiment. I also have an opportunity to show my two research papers. The conference is so great, and thenI think I will join the next world conference of earthquake engineering (15WCEE).

Research On The Seismic Design Of Transfer-Storey Structures Based On Philosophy Of Capacity Design Under Severe Earthquake
Jack CHEANG Han Xiaolei  Tang JianQiu   Chen Xuewei

ABSTRACT :
Both theoretical analysis and engineering applications of the transfer-storey structures are mostly limited in elastic stage under frequent earthquakes; the structural behavior after yielding under severe earthquake need to be studied by elastic-plastic analysis. And there is no specific and quantitative method to ensure that transfer structures can “resist severe earthquake without collapse”.  In this paper, the philosophy of capacity design is introduced into the design of transfer-storey structures and a practical design method for transfer structures under severe earthquake is presented. Through push-over analysis, various limit states of coupled shear walls are disclosed. Parameters that influence significantly the structure behavior such as integer coefficient of coupled shear walls, reinforcement ratio of coupling beams and height-width ratio of shear walls are highlighted. The shear overstrength of the coupling beams under the ideal limit state is reduced with reduction coefficient K. Overstrength of shear walls is derived by ultimate state analysis, which considers the axial forces increment of shear walls caused by shear overstrength of coupling beams. On this basis, mechanical characteristics and capacity based seismic design method of transfer storey under severe earthquake are studied by elastic-plastic analysis. A series of nonlinear dynamic time-history analysis has been completed, which considers the influence of varied parameters including the stiffness and mass of transfer structures, seismic protected intensity and the position of transfer storey. Moreover, the simplified formulas and the detail procedure for capacity design of transfer structures are presented.

KEYWORDS: philosophy of capacity design, design of transfer-storey, structural overstrength, push-over analysis, nonlinear dynamic time-history analysis, severe earthquake

Download:RESEARCH ON THE SEISMIC DESIGN OF TRANSFER-STOREY STRUCTURES BASED ON PHILOSOPHY OF CAPACITY DESIGN UNDER SEVERE EARTHQUAKE

Current version is: 2.0.0

Your last download was on Thu Jan 10 07:29:54 2008,
and the version was 1.7.5.

OpenSees executables for Windows 98/2000/NT/XP/Vista are available for download. The current version of OpenSees has been tested and is generally stable. However, users may encounter problems when running a new problem for the first time. For that reason we we strongly encourage you to participate in the various message boards hosted by OpenSees. And please report any bugs you find! That, of course, is the whole reason we make these binaries available.
OpenSees uses Tcl/Tk, a general purpose scripting language that we have extended with commands for OpenSees. It is necessary to download a DLL for the Tcl/Tk interpreter.
The first step is download the two files below. The first file a zip file containing the OpenSees executable. The second file is a self-installing executable for Tcl/Tk.
Note that for those of you who have downloaded before, YOU WILL HAVE TO INSTALL Tcl/Tk LIBRARIES AND HEADER FILES AGAIN. This is because we have upgraded to Tcl/Tk Version 8.4.6

DOWNLOAD Windows Binaries
Release_2.0.0 OpenSees2.0.0.exe tcl/tk 8.4.6

After downloading the Tcl/Tk executable you will need to run it to install the DLL's on your computer. As can be seen in the downloading section of the Getting Started Manual you will be asked were to install the files. Currently the default is C:\tcl. It is essential that you change this to "C:\Program Files\Tcl" during the course of the installation. If when you start OpenSees, you see an error message to the effect, "Cannot find tcl84.dll", you have skipped this step and must reinstall tcl. Note that you wil probably have to uninstall the version you just installed first.

Finally, locate the opensees.exe in a convenient directory. It is advisable to execute OpenSees from a DOS shell and you are ready to go!

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我校学生在国际结构振动台分析竞赛中获得第三名
2008年10月09日 10:32:23 浏览次数:1840


获奖证书

    近日,土木与交通学院博士研究生陈学伟、硕士研究生彭樵斌在韩小雷教授的指导下,参加国际结构振动台分析比赛并在比赛中获得3D科研组第三名的好成绩。
    该比赛由Blind Analysis Contest第14届世界地震工程会议和日本防灾科学技术研究所兵库抗震工学研究中心联合举办。比赛分四个组:3D科研组、3D工程组、2D科研组及2D工程组,要求对一全尺寸钢框架结构进行地震台试验前期分析,提交分析结果(包括地震响应及倒塌时间)并与震动台试验结果进行对比,以结果的准确性作为评选的标准。
    来自中国、日本、美国、新西兰、意大利、英国等国家和地区的47支队伍参加了本次比赛,其中包括多所在工程抗震领域有前沿性科研贡献的日本及美国的著名大学和研究所,代表了工程抗震的结构非线性领域的最高水平。
    本次比赛结果将于2008年10月在北京举办的第14届世界地震工程会议上宣布并展示抗震分析最新成果。 获奖名单及比赛情况可访问本次活动的网站:http://www.blind-analysis.jp/。(图文/通讯员 陈昕 土木与交通学院  编辑/龚华萍)
Today, my name is appear on the website of the university news. The news is about the award I get recently. The award I mentioned is the third place of the blind analysis contest. Let me introduce the contest. Blind analysis contest is hold in Japan in 2007, organize by 14th world conference of earthquake engineering and NIED which is a research institute in Japan. The content of the contest is asking the researcher to do analysis of a real steel frame structure before the shaking table test. Before the test, researcher should hand in the report of the response of the structure under an simulated earthquake named “Takatori”. The team whose result is close to the test result will win the award. Many researchers form many countries (China, Japan, United States, New Zealand, Italy, United Kingdom), 47 teams are join into the contest. All these teams represent the new technology and advance method in structure seismic analysis. After a few months, the contest result come out, and we got the third place and it’s broadcasted on the internet. I felt so happy and couldn’t sleep at night.
转载网址:http://202.38.194.228:8880/newsDetail.jsp?id=52884


DinoPTESAP v1.0 常应力(应变)单元有限元程序的开发

DinoPTESAP v1.0 这是我本科时候的作品,与Dino Sap v1.0 一样通过编程的方法去了解及体会静力学有限元方法的基本原理,通过一些美术功底与前后处理技术,并参考美国的SAP4源程序(我认为学生有限元的学生一定要看的源代码)开发的第二个有限元程序,当然第一个是DINOSAP,这两个程序是练手之作来的。常应变(应力)三角形单元CST的原理在有限元法一书(王勖成)或弹性力学(徐芝纶)一书都有介绍,原理与编制过程我就不详细阐述,学习有限元的学生通过编写这个程序会基本了解弹性静力学有限元的基本过程。在sap2000,ANSYS等程序中,都已经没有CST单元了,基本上最小阶次的单元都是二次元,教师在用ANSYS教学有限元时,往往不能SHOW一下常应变(应力)三角形单元的不足之处。这个程序就可以能过图形直观了体现常应变(应力)单元的性态了。

结构有限元模型采用3DSMAX建模后导入,3DSMAX有部分插件是可以实现网格划分的。导入后,在DINO PTESAP中建立约束,荷载,厚度弹性模量等信息后进行静力分析,最后结果可以显示变形及应力(应变)云图。

点击下载Dino PteSap v1.0


程序界面图(结构变形图)

结构应力 stress-y 图

以前在www.okok.org 上发表过的,求解一些不规则空间曲面有用到的程序,Dino Area Calculator 程序,原理与有限元的基本原理一样,求面积的过程是积分,积分的求解可以是通过公式来求出解析解计算得到,但对于复杂曲面,描述的公式可以很复杂,因此可以选择离散法,先将曲面离散成很多三角或四边面,然后以求和代替求积分。

软件操作说明:
1.用3DSMAX对计算的模型进行建模,细分网格;
2.输出ASCII文件,后辍为*.ASE,精度为七位;
3.打开面积求解器,计算表面积与重心;

点击下载:


在3dsmax建立半椭球表面并细分网格


在Dino Area Calculator 计算表面积

珠海天朗海峰国际中心_基于性能抗震分析


珠海天朗海峰相关网站:http://www.zhtlhf.com/

2008年8月完成了珠海天朗海峰国际中心的超限初步设计,采用了PERFORM-3D对其进行了弹塑性时程分析及基于性能的抗震评估。由于PERFORM-3D的建模非常复杂,所以我开发了一个ETABS TO PERFORM-3D的前处理,可以实现在ETABS建立几何模型,再通过我开发的前处理系统输入配筋与纤维截面划分,再导入PERFORM-3D完成非线性模型。PERFORM-3D 上述基于纤维模型(PERFORM-3D)的弹塑性分析的研究已初步完成论文《基于纤维模型的超高层钢筋混凝土结构弹塑性时程分析及工程应用》,正准备发表!PERFORM-3D是一个很不错的软件,可以输出大量工程关心的结果,塑性铰转角及能量耗散情况。


PERFORM-3D三维模型


PERFORM-3D前处理系统 ETP(ETABS TO PERFORM-3D)程序

DinoSap v1.0 算例2

算例2:《结构力学教程(I)》例题8-4,试求图所示吊桥结构的内力图,吊桥的EA等于横梁EI的1/20m-2


图 吊桥结构图

①打开DinoSap V1.0程序,点击按钮 打开显示控制对话框,在Userinterface选择Paper_Style;Grid_Size选5.0,Pressure_Dens填2.0,Force-Length 填50;如图所示选择;


图 显示设置

②这时每个单元格代表5m×5m,点击 增加结点,按结构形状增加6个结点;
③点击增加材料按扭如图,增加两种材料一种是梁,一种是拉杆,梁E=1,I=20,A=-1,拉杆E=1,I=-1,A=1;(-1代表无穷大);

图 修改材料属性


④点击增加单元按钮,修改两端约束与材料,点击始点与终点,建立模型;
⑤点击增加支座按钮增加拉杆的支座,再点击 增加梁端固接支座;
⑥点击增加线性荷载 ,增加桥面的10kN/m均布荷载
最终结构计算简图如图所示;
点击绘制内力图的三个按钮 得到全部内力图


 
弯矩图(kNm)


剪力图(kN)


轴力图(kN)

结果与课本手算是一致的。可见软件计算精确性。DINOSAP V1.0具有一个非常实用的功能是在同一个界面可以建出几个独立的结构模型,计算内力做比较。如图所示。

韩小雷教授准备在金土木用户大会上讲PERFORM-3D

 

报告人:韩小雷

    题目---《高层建筑结构抗震超限设计与结构弹塑性分析》

    内容简介:
    1、规范对结构抗震设计的基本目标;
    2、抗震超限设计方法
        a)“超限”的定义
        b)执行国家及地方规范,规程及规定,同时加强结构构造
        c)大震弹性设计方法
        d)基于性能的抗震设计方法
    3、基于性能的抗震设计方法
        a)基于性能设计方法简介
        b)分析方法简介(中震弹性大震静力弹塑性及大震动力弹塑性)
        c)关于时程分析法中选取地震波的问题
        d)美国Los Angelse and an Francisco 基于性能的抗震设计方法
        e)工程应用: i 涛景湾项目,32层钢筋混凝土框支剪力墙结构,采用SATWE,ETABS,EPDA分
           析;ii 华标品峰,48层钢筋混凝土框支剪力墙结构,采用SATWE,ETABS,EPDA分析;iii 中
           信君庭,43层钢筋混凝土框支剪力墙结构,采用SATWE,ETABS,EPDA分析;iv 广州花国酒店
           “白金五星”结构改造,采用EPDA、IDARC、ETABS、DIANA、SAP2000分析;v 家亿花园(烂
           尾楼改造工程),采用大震弹性法,与广州市民用建筑设计研究设计院合作完成;采用
           SATWE,ETABS,EPDA分析;vi 中洲二期广场门架设计(带粘滞阻尼器),与广州市城乡规划
           设计院合作完成;采用ETABS,SAP2000,PERFORM-3D分析;vii 珠海天朗海峰国际中心;58
           层钢筋砼框支剪力墙结构;与化工部长沙设计院合作完成,采用SATWE,ETABS,SAP2000,
           PERFORM-3D进行分析。
    4、结构弹塑性分析软件
        a)基于微观单元理论
          i ANSYS; ii ABAQUS; iii ADINA; iv MARC
        b)基于宏观单元理论
          i EPDA; ii IDARC-2D; iii CANNY; iv PERFORM-3D; v OPENSEES
    5、珠海天朗海峰国际中心结构抗震超限设计简介
        a)工程概况
        b)风振舒适度计算
        c)地震作用
        d)性能目标
        e)分析方法
        f)分析结果

    报告人简介:韩小雷 博士 华南理工大学土木工程系教授,博士生导师 华南理工大学建筑设计研究院一级注册结构工程师 英联邦结构工程师学会会员,特许注册结构工程师 香港工程师学会会员
    研究方向:复杂高层建筑结构抗震及抗风性能研究

DinoSap v1.0 结构力学求解器

平面杆系结构分析程序DINOSAP V1.0是用基于面向对象(OOP)的编程软件Borland Delphi7.0开发的一个高度图形化操作的基于Windows XP平台的应用软件,如图所示.(此项目为2005年华南理工大学百步梯攀登计划科研支助项目)

由于它的图形化功能很强大,易用性强,使用者能方便使用,它能为学生,教师,工程设计人员提供很多设计便利,主要功能包括:
 学生进行结构分析后,对结构进行验算;
 学生进行课程设计,如门式刚架的设计,进行内力分析;
 学生在设计结构时,对结构进行试算,优化设计;
 教师在课堂显于结构分析的过程;
 工程人员进行简单的平面杆系内力分析;
 方便的输出内力图,不用再经过手工重画,内力图美观、实用

算例1:钢桁架的建模

已知条件,所有杆件的抗压模量相等EA=1,桁架跨度18m,分六跨,高度为3m,在顶部结点作用水平力P=10kN,求钢桁架轴力。结构简图如图。
 

图 钢桁架计算简图(DinoSap v1.0生成)

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IDARC2D前后处理系统_操作动画演示

IDARC2D前后处理系统v1.0     

 美国BUFFALO大学开发的二维平面杆系分析程序IDARC 2D 6.0程序提供现行较为成熟的结构非线性分析,大量参数可由设计者自行调整,包括时程输入,构件恢复力模型,结构阻尼调整等,详尽的结构输出,包括结构刚度、振型变化,层间作用力,构件、楼层及整体结构的变形、耗能和操作状况等,且该软件已得到相关试验的检验,具有相当的工程参考意义。
IDARC前后处理系统IDARC2D_PREP,本软件适合工程人员使用习惯,按流程输入结构信息,基本信息-轴网-材料-滞回特性-截面-构件-设置-分析,通过这些流程对一个结构进行弹塑性分析,通过程序计算后得到各种结果再进行后处理显示,振型-动力响应-最大应力-塑性铰分布-滞回曲线。

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基于纤维模型的CFRP布加固混凝土柱有限元分析
   
陈学伟 韩小雷  季静  郑宜

摘  要:在新型加固技术中,利用纤维增强复合材料(FRP)布横向包裹钢筋混凝土柱可以改善其抗震性能。对CFRP布加固的混凝土柱进行的有限元分析可以对加固后的柱子进行承载力与抗震性能的评估。本文采用基于纤维模型的OpenSees非线性有限元软件,对CFRP加固的矩形柱试件进行模拟分析,并与文献中的试验结果进行对比。对比结果表明用OpenSees的纤维模型可以有效地对构件和结构进行加固后的承载力及抗震性能分析。      
关键词:纤维增强复合材料布 加固结构 非线性有限元 纤维模型